Merge commit '7c6eb0a1b7bf1aac7f033a7ec6d8cacc3b5c2615'
authorMichael Niedermayer <michael@niedermayer.cc>
Mon, 27 Jul 2015 19:14:31 +0000 (21:14 +0200)
committerMichael Niedermayer <michael@niedermayer.cc>
Mon, 27 Jul 2015 20:10:35 +0000 (22:10 +0200)
* commit '7c6eb0a1b7bf1aac7f033a7ec6d8cacc3b5c2615':
  lavc: AV-prefix all codec flags

Conflicts:
doc/examples/muxing.c
ffmpeg.c
ffmpeg_opt.c
ffplay.c
libavcodec/aacdec.c
libavcodec/aacenc.c
libavcodec/ac3dec.c
libavcodec/ac3enc_float.c
libavcodec/atrac1.c
libavcodec/atrac3.c
libavcodec/atrac3plusdec.c
libavcodec/dcadec.c
libavcodec/ffv1enc.c
libavcodec/h264.c
libavcodec/h264_loopfilter.c
libavcodec/h264_mb.c
libavcodec/imc.c
libavcodec/libmp3lame.c
libavcodec/libtheoraenc.c
libavcodec/libtwolame.c
libavcodec/libvpxenc.c
libavcodec/libxavs.c
libavcodec/libxvid.c
libavcodec/mpeg12dec.c
libavcodec/mpeg12enc.c
libavcodec/mpegaudiodec_template.c
libavcodec/mpegvideo.c
libavcodec/mpegvideo_enc.c
libavcodec/mpegvideo_motion.c
libavcodec/nellymoserdec.c
libavcodec/nellymoserenc.c
libavcodec/nvenc.c
libavcodec/on2avc.c
libavcodec/options_table.h
libavcodec/opus_celt.c
libavcodec/pngenc.c
libavcodec/ra288.c
libavcodec/ratecontrol.c
libavcodec/twinvq.c
libavcodec/vc1_block.c
libavcodec/vc1_loopfilter.c
libavcodec/vc1_mc.c
libavcodec/vc1dec.c
libavcodec/vorbisdec.c
libavcodec/vp3.c
libavcodec/wma.c
libavcodec/wmaprodec.c
libavcodec/x86/hpeldsp_init.c
libavcodec/x86/me_cmp_init.c

Merged-by: Michael Niedermayer <michael@niedermayer.cc>
131 files changed:
1  2 
doc/examples/decoding_encoding.c
doc/examples/muxing.c
doc/examples/remuxing.c
doc/examples/transcode_aac.c
doc/examples/transcoding.c
ffmpeg.c
ffmpeg_filter.c
ffmpeg_opt.c
ffplay.c
libavcodec/4xm.c
libavcodec/aacdec_template.c
libavcodec/aacenc.c
libavcodec/aacpsy.c
libavcodec/ac3dec.c
libavcodec/ac3enc.c
libavcodec/ac3enc_float.c
libavcodec/arm/idctdsp_init_arm.c
libavcodec/arm/idctdsp_init_armv6.c
libavcodec/ass.c
libavcodec/asvdec.c
libavcodec/asvenc.c
libavcodec/atrac1.c
libavcodec/atrac3.c
libavcodec/atrac3plusdec.c
libavcodec/avcodec.h
libavcodec/dcadec.c
libavcodec/dnxhddata.c
libavcodec/dnxhddec.c
libavcodec/dnxhdenc.c
libavcodec/dpxenc.c
libavcodec/dump_extradata_bsf.c
libavcodec/dvenc.c
libavcodec/dxa.c
libavcodec/eamad.c
libavcodec/eatgq.c
libavcodec/eatqi.c
libavcodec/ffv1enc.c
libavcodec/frame_thread_encoder.c
libavcodec/h263.h
libavcodec/h263dec.c
libavcodec/h264.c
libavcodec/h264_loopfilter.c
libavcodec/h264_mb.c
libavcodec/h264_mb_template.c
libavcodec/h264_ps.c
libavcodec/h264_slice.c
libavcodec/hevc_ps.c
libavcodec/huffyuvdec.c
libavcodec/huffyuvenc.c
libavcodec/imc.c
libavcodec/ituh263enc.c
libavcodec/j2kenc.c
libavcodec/jpeg2000dec.c
libavcodec/libaacplus.c
libavcodec/libdcadec.c
libavcodec/libfaac.c
libavcodec/libfdk-aacenc.c
libavcodec/libmp3lame.c
libavcodec/libopenh264enc.c
libavcodec/libschroedingerenc.c
libavcodec/libspeexenc.c
libavcodec/libtheoraenc.c
libavcodec/libtwolame.c
libavcodec/libvo-aacenc.c
libavcodec/libvorbisenc.c
libavcodec/libvpxenc.c
libavcodec/libx264.c
libavcodec/libx265.c
libavcodec/libxavs.c
libavcodec/libxvid.c
libavcodec/mdec.c
libavcodec/mjpegenc_common.c
libavcodec/motion-test.c
libavcodec/motion_est.c
libavcodec/mpeg12dec.c
libavcodec/mpeg12enc.c
libavcodec/mpeg4videodec.c
libavcodec/mpeg4videoenc.c
libavcodec/mpegaudiodec_template.c
libavcodec/mpegpicture.c
libavcodec/mpegvideo.c
libavcodec/mpegvideo_enc.c
libavcodec/mpegvideo_motion.c
libavcodec/mpegvideo_xvmc.c
libavcodec/nellymoserdec.c
libavcodec/nellymoserenc.c
libavcodec/nvenc.c
libavcodec/on2avc.c
libavcodec/options_table.h
libavcodec/opus_celt.c
libavcodec/parser.c
libavcodec/pngenc.c
libavcodec/ppc/idctdsp.c
libavcodec/proresdec2.c
libavcodec/proresenc_anatoliy.c
libavcodec/proresenc_kostya.c
libavcodec/pthread.c
libavcodec/qsvenc.c
libavcodec/ra288.c
libavcodec/ratecontrol.c
libavcodec/remove_extradata_bsf.c
libavcodec/snowdec.c
libavcodec/snowenc.c
libavcodec/svq1dec.c
libavcodec/svq3.c
libavcodec/tiffenc.c
libavcodec/twinvq.c
libavcodec/utils.c
libavcodec/vble.c
libavcodec/vc1_block.c
libavcodec/vc1_loopfilter.c
libavcodec/vc1_mc.c
libavcodec/vc1dec.c
libavcodec/vorbisdec.c
libavcodec/vorbisenc.c
libavcodec/vp3.c
libavcodec/wma.c
libavcodec/wmaprodec.c
libavcodec/wmv2.c
libavcodec/x86/hpeldsp_init.c
libavcodec/x86/me_cmp_init.c
libavcodec/x86/mpegvideo.c
libavcodec/x86/mpegvideoencdsp_init.c
libavcodec/x86/vp3dsp_init.c
libavfilter/vf_mcdeint.c
libavfilter/vf_uspp.c
libavformat/ffmdec.c
libavformat/ffmenc.c
libavformat/mov.c
libavformat/mux.c
libavformat/sdp.c

index f6643f6,0000000..5f26177
mode 100644,000000..100644
--- /dev/null
@@@ -1,665 -1,0 +1,665 @@@
-         c->flags|= CODEC_FLAG_TRUNCATED; /* we do not send complete frames */
 +/*
 + * Copyright (c) 2001 Fabrice Bellard
 + *
 + * Permission is hereby granted, free of charge, to any person obtaining a copy
 + * of this software and associated documentation files (the "Software"), to deal
 + * in the Software without restriction, including without limitation the rights
 + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 + * copies of the Software, and to permit persons to whom the Software is
 + * furnished to do so, subject to the following conditions:
 + *
 + * The above copyright notice and this permission notice shall be included in
 + * all copies or substantial portions of the Software.
 + *
 + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 + * THE SOFTWARE.
 + */
 +
 +/**
 + * @file
 + * libavcodec API use example.
 + *
 + * @example decoding_encoding.c
 + * Note that libavcodec only handles codecs (mpeg, mpeg4, etc...),
 + * not file formats (avi, vob, mp4, mov, mkv, mxf, flv, mpegts, mpegps, etc...). See library 'libavformat' for the
 + * format handling
 + */
 +
 +#include <math.h>
 +
 +#include <libavutil/opt.h>
 +#include <libavcodec/avcodec.h>
 +#include <libavutil/channel_layout.h>
 +#include <libavutil/common.h>
 +#include <libavutil/imgutils.h>
 +#include <libavutil/mathematics.h>
 +#include <libavutil/samplefmt.h>
 +
 +#define INBUF_SIZE 4096
 +#define AUDIO_INBUF_SIZE 20480
 +#define AUDIO_REFILL_THRESH 4096
 +
 +/* check that a given sample format is supported by the encoder */
 +static int check_sample_fmt(AVCodec *codec, enum AVSampleFormat sample_fmt)
 +{
 +    const enum AVSampleFormat *p = codec->sample_fmts;
 +
 +    while (*p != AV_SAMPLE_FMT_NONE) {
 +        if (*p == sample_fmt)
 +            return 1;
 +        p++;
 +    }
 +    return 0;
 +}
 +
 +/* just pick the highest supported samplerate */
 +static int select_sample_rate(AVCodec *codec)
 +{
 +    const int *p;
 +    int best_samplerate = 0;
 +
 +    if (!codec->supported_samplerates)
 +        return 44100;
 +
 +    p = codec->supported_samplerates;
 +    while (*p) {
 +        best_samplerate = FFMAX(*p, best_samplerate);
 +        p++;
 +    }
 +    return best_samplerate;
 +}
 +
 +/* select layout with the highest channel count */
 +static int select_channel_layout(AVCodec *codec)
 +{
 +    const uint64_t *p;
 +    uint64_t best_ch_layout = 0;
 +    int best_nb_channels   = 0;
 +
 +    if (!codec->channel_layouts)
 +        return AV_CH_LAYOUT_STEREO;
 +
 +    p = codec->channel_layouts;
 +    while (*p) {
 +        int nb_channels = av_get_channel_layout_nb_channels(*p);
 +
 +        if (nb_channels > best_nb_channels) {
 +            best_ch_layout    = *p;
 +            best_nb_channels = nb_channels;
 +        }
 +        p++;
 +    }
 +    return best_ch_layout;
 +}
 +
 +/*
 + * Audio encoding example
 + */
 +static void audio_encode_example(const char *filename)
 +{
 +    AVCodec *codec;
 +    AVCodecContext *c= NULL;
 +    AVFrame *frame;
 +    AVPacket pkt;
 +    int i, j, k, ret, got_output;
 +    int buffer_size;
 +    FILE *f;
 +    uint16_t *samples;
 +    float t, tincr;
 +
 +    printf("Encode audio file %s\n", filename);
 +
 +    /* find the MP2 encoder */
 +    codec = avcodec_find_encoder(AV_CODEC_ID_MP2);
 +    if (!codec) {
 +        fprintf(stderr, "Codec not found\n");
 +        exit(1);
 +    }
 +
 +    c = avcodec_alloc_context3(codec);
 +    if (!c) {
 +        fprintf(stderr, "Could not allocate audio codec context\n");
 +        exit(1);
 +    }
 +
 +    /* put sample parameters */
 +    c->bit_rate = 64000;
 +
 +    /* check that the encoder supports s16 pcm input */
 +    c->sample_fmt = AV_SAMPLE_FMT_S16;
 +    if (!check_sample_fmt(codec, c->sample_fmt)) {
 +        fprintf(stderr, "Encoder does not support sample format %s",
 +                av_get_sample_fmt_name(c->sample_fmt));
 +        exit(1);
 +    }
 +
 +    /* select other audio parameters supported by the encoder */
 +    c->sample_rate    = select_sample_rate(codec);
 +    c->channel_layout = select_channel_layout(codec);
 +    c->channels       = av_get_channel_layout_nb_channels(c->channel_layout);
 +
 +    /* open it */
 +    if (avcodec_open2(c, codec, NULL) < 0) {
 +        fprintf(stderr, "Could not open codec\n");
 +        exit(1);
 +    }
 +
 +    f = fopen(filename, "wb");
 +    if (!f) {
 +        fprintf(stderr, "Could not open %s\n", filename);
 +        exit(1);
 +    }
 +
 +    /* frame containing input raw audio */
 +    frame = av_frame_alloc();
 +    if (!frame) {
 +        fprintf(stderr, "Could not allocate audio frame\n");
 +        exit(1);
 +    }
 +
 +    frame->nb_samples     = c->frame_size;
 +    frame->format         = c->sample_fmt;
 +    frame->channel_layout = c->channel_layout;
 +
 +    /* the codec gives us the frame size, in samples,
 +     * we calculate the size of the samples buffer in bytes */
 +    buffer_size = av_samples_get_buffer_size(NULL, c->channels, c->frame_size,
 +                                             c->sample_fmt, 0);
 +    if (buffer_size < 0) {
 +        fprintf(stderr, "Could not get sample buffer size\n");
 +        exit(1);
 +    }
 +    samples = av_malloc(buffer_size);
 +    if (!samples) {
 +        fprintf(stderr, "Could not allocate %d bytes for samples buffer\n",
 +                buffer_size);
 +        exit(1);
 +    }
 +    /* setup the data pointers in the AVFrame */
 +    ret = avcodec_fill_audio_frame(frame, c->channels, c->sample_fmt,
 +                                   (const uint8_t*)samples, buffer_size, 0);
 +    if (ret < 0) {
 +        fprintf(stderr, "Could not setup audio frame\n");
 +        exit(1);
 +    }
 +
 +    /* encode a single tone sound */
 +    t = 0;
 +    tincr = 2 * M_PI * 440.0 / c->sample_rate;
 +    for (i = 0; i < 200; i++) {
 +        av_init_packet(&pkt);
 +        pkt.data = NULL; // packet data will be allocated by the encoder
 +        pkt.size = 0;
 +
 +        for (j = 0; j < c->frame_size; j++) {
 +            samples[2*j] = (int)(sin(t) * 10000);
 +
 +            for (k = 1; k < c->channels; k++)
 +                samples[2*j + k] = samples[2*j];
 +            t += tincr;
 +        }
 +        /* encode the samples */
 +        ret = avcodec_encode_audio2(c, &pkt, frame, &got_output);
 +        if (ret < 0) {
 +            fprintf(stderr, "Error encoding audio frame\n");
 +            exit(1);
 +        }
 +        if (got_output) {
 +            fwrite(pkt.data, 1, pkt.size, f);
 +            av_free_packet(&pkt);
 +        }
 +    }
 +
 +    /* get the delayed frames */
 +    for (got_output = 1; got_output; i++) {
 +        ret = avcodec_encode_audio2(c, &pkt, NULL, &got_output);
 +        if (ret < 0) {
 +            fprintf(stderr, "Error encoding frame\n");
 +            exit(1);
 +        }
 +
 +        if (got_output) {
 +            fwrite(pkt.data, 1, pkt.size, f);
 +            av_free_packet(&pkt);
 +        }
 +    }
 +    fclose(f);
 +
 +    av_freep(&samples);
 +    av_frame_free(&frame);
 +    avcodec_close(c);
 +    av_free(c);
 +}
 +
 +/*
 + * Audio decoding.
 + */
 +static void audio_decode_example(const char *outfilename, const char *filename)
 +{
 +    AVCodec *codec;
 +    AVCodecContext *c= NULL;
 +    int len;
 +    FILE *f, *outfile;
 +    uint8_t inbuf[AUDIO_INBUF_SIZE + FF_INPUT_BUFFER_PADDING_SIZE];
 +    AVPacket avpkt;
 +    AVFrame *decoded_frame = NULL;
 +
 +    av_init_packet(&avpkt);
 +
 +    printf("Decode audio file %s to %s\n", filename, outfilename);
 +
 +    /* find the mpeg audio decoder */
 +    codec = avcodec_find_decoder(AV_CODEC_ID_MP2);
 +    if (!codec) {
 +        fprintf(stderr, "Codec not found\n");
 +        exit(1);
 +    }
 +
 +    c = avcodec_alloc_context3(codec);
 +    if (!c) {
 +        fprintf(stderr, "Could not allocate audio codec context\n");
 +        exit(1);
 +    }
 +
 +    /* open it */
 +    if (avcodec_open2(c, codec, NULL) < 0) {
 +        fprintf(stderr, "Could not open codec\n");
 +        exit(1);
 +    }
 +
 +    f = fopen(filename, "rb");
 +    if (!f) {
 +        fprintf(stderr, "Could not open %s\n", filename);
 +        exit(1);
 +    }
 +    outfile = fopen(outfilename, "wb");
 +    if (!outfile) {
 +        av_free(c);
 +        exit(1);
 +    }
 +
 +    /* decode until eof */
 +    avpkt.data = inbuf;
 +    avpkt.size = fread(inbuf, 1, AUDIO_INBUF_SIZE, f);
 +
 +    while (avpkt.size > 0) {
 +        int i, ch;
 +        int got_frame = 0;
 +
 +        if (!decoded_frame) {
 +            if (!(decoded_frame = av_frame_alloc())) {
 +                fprintf(stderr, "Could not allocate audio frame\n");
 +                exit(1);
 +            }
 +        }
 +
 +        len = avcodec_decode_audio4(c, decoded_frame, &got_frame, &avpkt);
 +        if (len < 0) {
 +            fprintf(stderr, "Error while decoding\n");
 +            exit(1);
 +        }
 +        if (got_frame) {
 +            /* if a frame has been decoded, output it */
 +            int data_size = av_get_bytes_per_sample(c->sample_fmt);
 +            if (data_size < 0) {
 +                /* This should not occur, checking just for paranoia */
 +                fprintf(stderr, "Failed to calculate data size\n");
 +                exit(1);
 +            }
 +            for (i=0; i<decoded_frame->nb_samples; i++)
 +                for (ch=0; ch<c->channels; ch++)
 +                    fwrite(decoded_frame->data[ch] + data_size*i, 1, data_size, outfile);
 +        }
 +        avpkt.size -= len;
 +        avpkt.data += len;
 +        avpkt.dts =
 +        avpkt.pts = AV_NOPTS_VALUE;
 +        if (avpkt.size < AUDIO_REFILL_THRESH) {
 +            /* Refill the input buffer, to avoid trying to decode
 +             * incomplete frames. Instead of this, one could also use
 +             * a parser, or use a proper container format through
 +             * libavformat. */
 +            memmove(inbuf, avpkt.data, avpkt.size);
 +            avpkt.data = inbuf;
 +            len = fread(avpkt.data + avpkt.size, 1,
 +                        AUDIO_INBUF_SIZE - avpkt.size, f);
 +            if (len > 0)
 +                avpkt.size += len;
 +        }
 +    }
 +
 +    fclose(outfile);
 +    fclose(f);
 +
 +    avcodec_close(c);
 +    av_free(c);
 +    av_frame_free(&decoded_frame);
 +}
 +
 +/*
 + * Video encoding example
 + */
 +static void video_encode_example(const char *filename, int codec_id)
 +{
 +    AVCodec *codec;
 +    AVCodecContext *c= NULL;
 +    int i, ret, x, y, got_output;
 +    FILE *f;
 +    AVFrame *frame;
 +    AVPacket pkt;
 +    uint8_t endcode[] = { 0, 0, 1, 0xb7 };
 +
 +    printf("Encode video file %s\n", filename);
 +
 +    /* find the mpeg1 video encoder */
 +    codec = avcodec_find_encoder(codec_id);
 +    if (!codec) {
 +        fprintf(stderr, "Codec not found\n");
 +        exit(1);
 +    }
 +
 +    c = avcodec_alloc_context3(codec);
 +    if (!c) {
 +        fprintf(stderr, "Could not allocate video codec context\n");
 +        exit(1);
 +    }
 +
 +    /* put sample parameters */
 +    c->bit_rate = 400000;
 +    /* resolution must be a multiple of two */
 +    c->width = 352;
 +    c->height = 288;
 +    /* frames per second */
 +    c->time_base = (AVRational){1,25};
 +    /* emit one intra frame every ten frames
 +     * check frame pict_type before passing frame
 +     * to encoder, if frame->pict_type is AV_PICTURE_TYPE_I
 +     * then gop_size is ignored and the output of encoder
 +     * will always be I frame irrespective to gop_size
 +     */
 +    c->gop_size = 10;
 +    c->max_b_frames = 1;
 +    c->pix_fmt = AV_PIX_FMT_YUV420P;
 +
 +    if (codec_id == AV_CODEC_ID_H264)
 +        av_opt_set(c->priv_data, "preset", "slow", 0);
 +
 +    /* open it */
 +    if (avcodec_open2(c, codec, NULL) < 0) {
 +        fprintf(stderr, "Could not open codec\n");
 +        exit(1);
 +    }
 +
 +    f = fopen(filename, "wb");
 +    if (!f) {
 +        fprintf(stderr, "Could not open %s\n", filename);
 +        exit(1);
 +    }
 +
 +    frame = av_frame_alloc();
 +    if (!frame) {
 +        fprintf(stderr, "Could not allocate video frame\n");
 +        exit(1);
 +    }
 +    frame->format = c->pix_fmt;
 +    frame->width  = c->width;
 +    frame->height = c->height;
 +
 +    /* the image can be allocated by any means and av_image_alloc() is
 +     * just the most convenient way if av_malloc() is to be used */
 +    ret = av_image_alloc(frame->data, frame->linesize, c->width, c->height,
 +                         c->pix_fmt, 32);
 +    if (ret < 0) {
 +        fprintf(stderr, "Could not allocate raw picture buffer\n");
 +        exit(1);
 +    }
 +
 +    /* encode 1 second of video */
 +    for (i = 0; i < 25; i++) {
 +        av_init_packet(&pkt);
 +        pkt.data = NULL;    // packet data will be allocated by the encoder
 +        pkt.size = 0;
 +
 +        fflush(stdout);
 +        /* prepare a dummy image */
 +        /* Y */
 +        for (y = 0; y < c->height; y++) {
 +            for (x = 0; x < c->width; x++) {
 +                frame->data[0][y * frame->linesize[0] + x] = x + y + i * 3;
 +            }
 +        }
 +
 +        /* Cb and Cr */
 +        for (y = 0; y < c->height/2; y++) {
 +            for (x = 0; x < c->width/2; x++) {
 +                frame->data[1][y * frame->linesize[1] + x] = 128 + y + i * 2;
 +                frame->data[2][y * frame->linesize[2] + x] = 64 + x + i * 5;
 +            }
 +        }
 +
 +        frame->pts = i;
 +
 +        /* encode the image */
 +        ret = avcodec_encode_video2(c, &pkt, frame, &got_output);
 +        if (ret < 0) {
 +            fprintf(stderr, "Error encoding frame\n");
 +            exit(1);
 +        }
 +
 +        if (got_output) {
 +            printf("Write frame %3d (size=%5d)\n", i, pkt.size);
 +            fwrite(pkt.data, 1, pkt.size, f);
 +            av_free_packet(&pkt);
 +        }
 +    }
 +
 +    /* get the delayed frames */
 +    for (got_output = 1; got_output; i++) {
 +        fflush(stdout);
 +
 +        ret = avcodec_encode_video2(c, &pkt, NULL, &got_output);
 +        if (ret < 0) {
 +            fprintf(stderr, "Error encoding frame\n");
 +            exit(1);
 +        }
 +
 +        if (got_output) {
 +            printf("Write frame %3d (size=%5d)\n", i, pkt.size);
 +            fwrite(pkt.data, 1, pkt.size, f);
 +            av_free_packet(&pkt);
 +        }
 +    }
 +
 +    /* add sequence end code to have a real mpeg file */
 +    fwrite(endcode, 1, sizeof(endcode), f);
 +    fclose(f);
 +
 +    avcodec_close(c);
 +    av_free(c);
 +    av_freep(&frame->data[0]);
 +    av_frame_free(&frame);
 +    printf("\n");
 +}
 +
 +/*
 + * Video decoding example
 + */
 +
 +static void pgm_save(unsigned char *buf, int wrap, int xsize, int ysize,
 +                     char *filename)
 +{
 +    FILE *f;
 +    int i;
 +
 +    f = fopen(filename,"w");
 +    fprintf(f, "P5\n%d %d\n%d\n", xsize, ysize, 255);
 +    for (i = 0; i < ysize; i++)
 +        fwrite(buf + i * wrap, 1, xsize, f);
 +    fclose(f);
 +}
 +
 +static int decode_write_frame(const char *outfilename, AVCodecContext *avctx,
 +                              AVFrame *frame, int *frame_count, AVPacket *pkt, int last)
 +{
 +    int len, got_frame;
 +    char buf[1024];
 +
 +    len = avcodec_decode_video2(avctx, frame, &got_frame, pkt);
 +    if (len < 0) {
 +        fprintf(stderr, "Error while decoding frame %d\n", *frame_count);
 +        return len;
 +    }
 +    if (got_frame) {
 +        printf("Saving %sframe %3d\n", last ? "last " : "", *frame_count);
 +        fflush(stdout);
 +
 +        /* the picture is allocated by the decoder, no need to free it */
 +        snprintf(buf, sizeof(buf), outfilename, *frame_count);
 +        pgm_save(frame->data[0], frame->linesize[0],
 +                 frame->width, frame->height, buf);
 +        (*frame_count)++;
 +    }
 +    if (pkt->data) {
 +        pkt->size -= len;
 +        pkt->data += len;
 +    }
 +    return 0;
 +}
 +
 +static void video_decode_example(const char *outfilename, const char *filename)
 +{
 +    AVCodec *codec;
 +    AVCodecContext *c= NULL;
 +    int frame_count;
 +    FILE *f;
 +    AVFrame *frame;
 +    uint8_t inbuf[INBUF_SIZE + FF_INPUT_BUFFER_PADDING_SIZE];
 +    AVPacket avpkt;
 +
 +    av_init_packet(&avpkt);
 +
 +    /* set end of buffer to 0 (this ensures that no overreading happens for damaged mpeg streams) */
 +    memset(inbuf + INBUF_SIZE, 0, FF_INPUT_BUFFER_PADDING_SIZE);
 +
 +    printf("Decode video file %s to %s\n", filename, outfilename);
 +
 +    /* find the mpeg1 video decoder */
 +    codec = avcodec_find_decoder(AV_CODEC_ID_MPEG1VIDEO);
 +    if (!codec) {
 +        fprintf(stderr, "Codec not found\n");
 +        exit(1);
 +    }
 +
 +    c = avcodec_alloc_context3(codec);
 +    if (!c) {
 +        fprintf(stderr, "Could not allocate video codec context\n");
 +        exit(1);
 +    }
 +
 +    if(codec->capabilities&CODEC_CAP_TRUNCATED)
++        c->flags |= AV_CODEC_FLAG_TRUNCATED; // we do not send complete frames
 +
 +    /* For some codecs, such as msmpeg4 and mpeg4, width and height
 +       MUST be initialized there because this information is not
 +       available in the bitstream. */
 +
 +    /* open it */
 +    if (avcodec_open2(c, codec, NULL) < 0) {
 +        fprintf(stderr, "Could not open codec\n");
 +        exit(1);
 +    }
 +
 +    f = fopen(filename, "rb");
 +    if (!f) {
 +        fprintf(stderr, "Could not open %s\n", filename);
 +        exit(1);
 +    }
 +
 +    frame = av_frame_alloc();
 +    if (!frame) {
 +        fprintf(stderr, "Could not allocate video frame\n");
 +        exit(1);
 +    }
 +
 +    frame_count = 0;
 +    for (;;) {
 +        avpkt.size = fread(inbuf, 1, INBUF_SIZE, f);
 +        if (avpkt.size == 0)
 +            break;
 +
 +        /* NOTE1: some codecs are stream based (mpegvideo, mpegaudio)
 +           and this is the only method to use them because you cannot
 +           know the compressed data size before analysing it.
 +
 +           BUT some other codecs (msmpeg4, mpeg4) are inherently frame
 +           based, so you must call them with all the data for one
 +           frame exactly. You must also initialize 'width' and
 +           'height' before initializing them. */
 +
 +        /* NOTE2: some codecs allow the raw parameters (frame size,
 +           sample rate) to be changed at any frame. We handle this, so
 +           you should also take care of it */
 +
 +        /* here, we use a stream based decoder (mpeg1video), so we
 +           feed decoder and see if it could decode a frame */
 +        avpkt.data = inbuf;
 +        while (avpkt.size > 0)
 +            if (decode_write_frame(outfilename, c, frame, &frame_count, &avpkt, 0) < 0)
 +                exit(1);
 +    }
 +
 +    /* some codecs, such as MPEG, transmit the I and P frame with a
 +       latency of one frame. You must do the following to have a
 +       chance to get the last frame of the video */
 +    avpkt.data = NULL;
 +    avpkt.size = 0;
 +    decode_write_frame(outfilename, c, frame, &frame_count, &avpkt, 1);
 +
 +    fclose(f);
 +
 +    avcodec_close(c);
 +    av_free(c);
 +    av_frame_free(&frame);
 +    printf("\n");
 +}
 +
 +int main(int argc, char **argv)
 +{
 +    const char *output_type;
 +
 +    /* register all the codecs */
 +    avcodec_register_all();
 +
 +    if (argc < 2) {
 +        printf("usage: %s output_type\n"
 +               "API example program to decode/encode a media stream with libavcodec.\n"
 +               "This program generates a synthetic stream and encodes it to a file\n"
 +               "named test.h264, test.mp2 or test.mpg depending on output_type.\n"
 +               "The encoded stream is then decoded and written to a raw data output.\n"
 +               "output_type must be chosen between 'h264', 'mp2', 'mpg'.\n",
 +               argv[0]);
 +        return 1;
 +    }
 +    output_type = argv[1];
 +
 +    if (!strcmp(output_type, "h264")) {
 +        video_encode_example("test.h264", AV_CODEC_ID_H264);
 +    } else if (!strcmp(output_type, "mp2")) {
 +        audio_encode_example("test.mp2");
 +        audio_decode_example("test.pcm", "test.mp2");
 +    } else if (!strcmp(output_type, "mpg")) {
 +        video_encode_example("test.mpg", AV_CODEC_ID_MPEG1VIDEO);
 +        video_decode_example("test%02d.pgm", "test.mpg");
 +    } else {
 +        fprintf(stderr, "Invalid output type '%s', choose between 'h264', 'mp2', or 'mpg'\n",
 +                output_type);
 +        return 1;
 +    }
 +
 +    return 0;
 +}
index 8b0ea60,0000000..7aece76
mode 100644,000000..100644
--- /dev/null
@@@ -1,670 -1,0 +1,670 @@@
-         c->flags |= CODEC_FLAG_GLOBAL_HEADER;
 +/*
 + * Copyright (c) 2003 Fabrice Bellard
 + *
 + * Permission is hereby granted, free of charge, to any person obtaining a copy
 + * of this software and associated documentation files (the "Software"), to deal
 + * in the Software without restriction, including without limitation the rights
 + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 + * copies of the Software, and to permit persons to whom the Software is
 + * furnished to do so, subject to the following conditions:
 + *
 + * The above copyright notice and this permission notice shall be included in
 + * all copies or substantial portions of the Software.
 + *
 + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 + * THE SOFTWARE.
 + */
 +
 +/**
 + * @file
 + * libavformat API example.
 + *
 + * Output a media file in any supported libavformat format. The default
 + * codecs are used.
 + * @example muxing.c
 + */
 +
 +#include <stdlib.h>
 +#include <stdio.h>
 +#include <string.h>
 +#include <math.h>
 +
 +#include <libavutil/avassert.h>
 +#include <libavutil/channel_layout.h>
 +#include <libavutil/opt.h>
 +#include <libavutil/mathematics.h>
 +#include <libavutil/timestamp.h>
 +#include <libavformat/avformat.h>
 +#include <libswscale/swscale.h>
 +#include <libswresample/swresample.h>
 +
 +#define STREAM_DURATION   10.0
 +#define STREAM_FRAME_RATE 25 /* 25 images/s */
 +#define STREAM_PIX_FMT    AV_PIX_FMT_YUV420P /* default pix_fmt */
 +
 +#define SCALE_FLAGS SWS_BICUBIC
 +
 +// a wrapper around a single output AVStream
 +typedef struct OutputStream {
 +    AVStream *st;
 +
 +    /* pts of the next frame that will be generated */
 +    int64_t next_pts;
 +    int samples_count;
 +
 +    AVFrame *frame;
 +    AVFrame *tmp_frame;
 +
 +    float t, tincr, tincr2;
 +
 +    struct SwsContext *sws_ctx;
 +    struct SwrContext *swr_ctx;
 +} OutputStream;
 +
 +static void log_packet(const AVFormatContext *fmt_ctx, const AVPacket *pkt)
 +{
 +    AVRational *time_base = &fmt_ctx->streams[pkt->stream_index]->time_base;
 +
 +    printf("pts:%s pts_time:%s dts:%s dts_time:%s duration:%s duration_time:%s stream_index:%d\n",
 +           av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, time_base),
 +           av_ts2str(pkt->dts), av_ts2timestr(pkt->dts, time_base),
 +           av_ts2str(pkt->duration), av_ts2timestr(pkt->duration, time_base),
 +           pkt->stream_index);
 +}
 +
 +static int write_frame(AVFormatContext *fmt_ctx, const AVRational *time_base, AVStream *st, AVPacket *pkt)
 +{
 +    /* rescale output packet timestamp values from codec to stream timebase */
 +    av_packet_rescale_ts(pkt, *time_base, st->time_base);
 +    pkt->stream_index = st->index;
 +
 +    /* Write the compressed frame to the media file. */
 +    log_packet(fmt_ctx, pkt);
 +    return av_interleaved_write_frame(fmt_ctx, pkt);
 +}
 +
 +/* Add an output stream. */
 +static void add_stream(OutputStream *ost, AVFormatContext *oc,
 +                       AVCodec **codec,
 +                       enum AVCodecID codec_id)
 +{
 +    AVCodecContext *c;
 +    int i;
 +
 +    /* find the encoder */
 +    *codec = avcodec_find_encoder(codec_id);
 +    if (!(*codec)) {
 +        fprintf(stderr, "Could not find encoder for '%s'\n",
 +                avcodec_get_name(codec_id));
 +        exit(1);
 +    }
 +
 +    ost->st = avformat_new_stream(oc, *codec);
 +    if (!ost->st) {
 +        fprintf(stderr, "Could not allocate stream\n");
 +        exit(1);
 +    }
 +    ost->st->id = oc->nb_streams-1;
 +    c = ost->st->codec;
 +
 +    switch ((*codec)->type) {
 +    case AVMEDIA_TYPE_AUDIO:
 +        c->sample_fmt  = (*codec)->sample_fmts ?
 +            (*codec)->sample_fmts[0] : AV_SAMPLE_FMT_FLTP;
 +        c->bit_rate    = 64000;
 +        c->sample_rate = 44100;
 +        if ((*codec)->supported_samplerates) {
 +            c->sample_rate = (*codec)->supported_samplerates[0];
 +            for (i = 0; (*codec)->supported_samplerates[i]; i++) {
 +                if ((*codec)->supported_samplerates[i] == 44100)
 +                    c->sample_rate = 44100;
 +            }
 +        }
 +        c->channels        = av_get_channel_layout_nb_channels(c->channel_layout);
 +        c->channel_layout = AV_CH_LAYOUT_STEREO;
 +        if ((*codec)->channel_layouts) {
 +            c->channel_layout = (*codec)->channel_layouts[0];
 +            for (i = 0; (*codec)->channel_layouts[i]; i++) {
 +                if ((*codec)->channel_layouts[i] == AV_CH_LAYOUT_STEREO)
 +                    c->channel_layout = AV_CH_LAYOUT_STEREO;
 +            }
 +        }
 +        c->channels        = av_get_channel_layout_nb_channels(c->channel_layout);
 +        ost->st->time_base = (AVRational){ 1, c->sample_rate };
 +        break;
 +
 +    case AVMEDIA_TYPE_VIDEO:
 +        c->codec_id = codec_id;
 +
 +        c->bit_rate = 400000;
 +        /* Resolution must be a multiple of two. */
 +        c->width    = 352;
 +        c->height   = 288;
 +        /* timebase: This is the fundamental unit of time (in seconds) in terms
 +         * of which frame timestamps are represented. For fixed-fps content,
 +         * timebase should be 1/framerate and timestamp increments should be
 +         * identical to 1. */
 +        ost->st->time_base = (AVRational){ 1, STREAM_FRAME_RATE };
 +        c->time_base       = ost->st->time_base;
 +
 +        c->gop_size      = 12; /* emit one intra frame every twelve frames at most */
 +        c->pix_fmt       = STREAM_PIX_FMT;
 +        if (c->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
 +            /* just for testing, we also add B frames */
 +            c->max_b_frames = 2;
 +        }
 +        if (c->codec_id == AV_CODEC_ID_MPEG1VIDEO) {
 +            /* Needed to avoid using macroblocks in which some coeffs overflow.
 +             * This does not happen with normal video, it just happens here as
 +             * the motion of the chroma plane does not match the luma plane. */
 +            c->mb_decision = 2;
 +        }
 +    break;
 +
 +    default:
 +        break;
 +    }
 +
 +    /* Some formats want stream headers to be separate. */
 +    if (oc->oformat->flags & AVFMT_GLOBALHEADER)
++        c->flags |= AV_CODEC_FLAG_GLOBAL_HEADER;
 +}
 +
 +/**************************************************************/
 +/* audio output */
 +
 +static AVFrame *alloc_audio_frame(enum AVSampleFormat sample_fmt,
 +                                  uint64_t channel_layout,
 +                                  int sample_rate, int nb_samples)
 +{
 +    AVFrame *frame = av_frame_alloc();
 +    int ret;
 +
 +    if (!frame) {
 +        fprintf(stderr, "Error allocating an audio frame\n");
 +        exit(1);
 +    }
 +
 +    frame->format = sample_fmt;
 +    frame->channel_layout = channel_layout;
 +    frame->sample_rate = sample_rate;
 +    frame->nb_samples = nb_samples;
 +
 +    if (nb_samples) {
 +        ret = av_frame_get_buffer(frame, 0);
 +        if (ret < 0) {
 +            fprintf(stderr, "Error allocating an audio buffer\n");
 +            exit(1);
 +        }
 +    }
 +
 +    return frame;
 +}
 +
 +static void open_audio(AVFormatContext *oc, AVCodec *codec, OutputStream *ost, AVDictionary *opt_arg)
 +{
 +    AVCodecContext *c;
 +    int nb_samples;
 +    int ret;
 +    AVDictionary *opt = NULL;
 +
 +    c = ost->st->codec;
 +
 +    /* open it */
 +    av_dict_copy(&opt, opt_arg, 0);
 +    ret = avcodec_open2(c, codec, &opt);
 +    av_dict_free(&opt);
 +    if (ret < 0) {
 +        fprintf(stderr, "Could not open audio codec: %s\n", av_err2str(ret));
 +        exit(1);
 +    }
 +
 +    /* init signal generator */
 +    ost->t     = 0;
 +    ost->tincr = 2 * M_PI * 110.0 / c->sample_rate;
 +    /* increment frequency by 110 Hz per second */
 +    ost->tincr2 = 2 * M_PI * 110.0 / c->sample_rate / c->sample_rate;
 +
 +    if (c->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE)
 +        nb_samples = 10000;
 +    else
 +        nb_samples = c->frame_size;
 +
 +    ost->frame     = alloc_audio_frame(c->sample_fmt, c->channel_layout,
 +                                       c->sample_rate, nb_samples);
 +    ost->tmp_frame = alloc_audio_frame(AV_SAMPLE_FMT_S16, c->channel_layout,
 +                                       c->sample_rate, nb_samples);
 +
 +    /* create resampler context */
 +        ost->swr_ctx = swr_alloc();
 +        if (!ost->swr_ctx) {
 +            fprintf(stderr, "Could not allocate resampler context\n");
 +            exit(1);
 +        }
 +
 +        /* set options */
 +        av_opt_set_int       (ost->swr_ctx, "in_channel_count",   c->channels,       0);
 +        av_opt_set_int       (ost->swr_ctx, "in_sample_rate",     c->sample_rate,    0);
 +        av_opt_set_sample_fmt(ost->swr_ctx, "in_sample_fmt",      AV_SAMPLE_FMT_S16, 0);
 +        av_opt_set_int       (ost->swr_ctx, "out_channel_count",  c->channels,       0);
 +        av_opt_set_int       (ost->swr_ctx, "out_sample_rate",    c->sample_rate,    0);
 +        av_opt_set_sample_fmt(ost->swr_ctx, "out_sample_fmt",     c->sample_fmt,     0);
 +
 +        /* initialize the resampling context */
 +        if ((ret = swr_init(ost->swr_ctx)) < 0) {
 +            fprintf(stderr, "Failed to initialize the resampling context\n");
 +            exit(1);
 +        }
 +}
 +
 +/* Prepare a 16 bit dummy audio frame of 'frame_size' samples and
 + * 'nb_channels' channels. */
 +static AVFrame *get_audio_frame(OutputStream *ost)
 +{
 +    AVFrame *frame = ost->tmp_frame;
 +    int j, i, v;
 +    int16_t *q = (int16_t*)frame->data[0];
 +
 +    /* check if we want to generate more frames */
 +    if (av_compare_ts(ost->next_pts, ost->st->codec->time_base,
 +                      STREAM_DURATION, (AVRational){ 1, 1 }) >= 0)
 +        return NULL;
 +
 +    for (j = 0; j <frame->nb_samples; j++) {
 +        v = (int)(sin(ost->t) * 10000);
 +        for (i = 0; i < ost->st->codec->channels; i++)
 +            *q++ = v;
 +        ost->t     += ost->tincr;
 +        ost->tincr += ost->tincr2;
 +    }
 +
 +    frame->pts = ost->next_pts;
 +    ost->next_pts  += frame->nb_samples;
 +
 +    return frame;
 +}
 +
 +/*
 + * encode one audio frame and send it to the muxer
 + * return 1 when encoding is finished, 0 otherwise
 + */
 +static int write_audio_frame(AVFormatContext *oc, OutputStream *ost)
 +{
 +    AVCodecContext *c;
 +    AVPacket pkt = { 0 }; // data and size must be 0;
 +    AVFrame *frame;
 +    int ret;
 +    int got_packet;
 +    int dst_nb_samples;
 +
 +    av_init_packet(&pkt);
 +    c = ost->st->codec;
 +
 +    frame = get_audio_frame(ost);
 +
 +    if (frame) {
 +        /* convert samples from native format to destination codec format, using the resampler */
 +            /* compute destination number of samples */
 +            dst_nb_samples = av_rescale_rnd(swr_get_delay(ost->swr_ctx, c->sample_rate) + frame->nb_samples,
 +                                            c->sample_rate, c->sample_rate, AV_ROUND_UP);
 +            av_assert0(dst_nb_samples == frame->nb_samples);
 +
 +        /* when we pass a frame to the encoder, it may keep a reference to it
 +         * internally;
 +         * make sure we do not overwrite it here
 +         */
 +        ret = av_frame_make_writable(ost->frame);
 +        if (ret < 0)
 +            exit(1);
 +
 +            /* convert to destination format */
 +            ret = swr_convert(ost->swr_ctx,
 +                              ost->frame->data, dst_nb_samples,
 +                              (const uint8_t **)frame->data, frame->nb_samples);
 +            if (ret < 0) {
 +                fprintf(stderr, "Error while converting\n");
 +                exit(1);
 +            }
 +            frame = ost->frame;
 +
 +        frame->pts = av_rescale_q(ost->samples_count, (AVRational){1, c->sample_rate}, c->time_base);
 +        ost->samples_count += dst_nb_samples;
 +    }
 +
 +    ret = avcodec_encode_audio2(c, &pkt, frame, &got_packet);
 +    if (ret < 0) {
 +        fprintf(stderr, "Error encoding audio frame: %s\n", av_err2str(ret));
 +        exit(1);
 +    }
 +
 +    if (got_packet) {
 +        ret = write_frame(oc, &c->time_base, ost->st, &pkt);
 +        if (ret < 0) {
 +            fprintf(stderr, "Error while writing audio frame: %s\n",
 +                    av_err2str(ret));
 +            exit(1);
 +        }
 +    }
 +
 +    return (frame || got_packet) ? 0 : 1;
 +}
 +
 +/**************************************************************/
 +/* video output */
 +
 +static AVFrame *alloc_picture(enum AVPixelFormat pix_fmt, int width, int height)
 +{
 +    AVFrame *picture;
 +    int ret;
 +
 +    picture = av_frame_alloc();
 +    if (!picture)
 +        return NULL;
 +
 +    picture->format = pix_fmt;
 +    picture->width  = width;
 +    picture->height = height;
 +
 +    /* allocate the buffers for the frame data */
 +    ret = av_frame_get_buffer(picture, 32);
 +    if (ret < 0) {
 +        fprintf(stderr, "Could not allocate frame data.\n");
 +        exit(1);
 +    }
 +
 +    return picture;
 +}
 +
 +static void open_video(AVFormatContext *oc, AVCodec *codec, OutputStream *ost, AVDictionary *opt_arg)
 +{
 +    int ret;
 +    AVCodecContext *c = ost->st->codec;
 +    AVDictionary *opt = NULL;
 +
 +    av_dict_copy(&opt, opt_arg, 0);
 +
 +    /* open the codec */
 +    ret = avcodec_open2(c, codec, &opt);
 +    av_dict_free(&opt);
 +    if (ret < 0) {
 +        fprintf(stderr, "Could not open video codec: %s\n", av_err2str(ret));
 +        exit(1);
 +    }
 +
 +    /* allocate and init a re-usable frame */
 +    ost->frame = alloc_picture(c->pix_fmt, c->width, c->height);
 +    if (!ost->frame) {
 +        fprintf(stderr, "Could not allocate video frame\n");
 +        exit(1);
 +    }
 +
 +    /* If the output format is not YUV420P, then a temporary YUV420P
 +     * picture is needed too. It is then converted to the required
 +     * output format. */
 +    ost->tmp_frame = NULL;
 +    if (c->pix_fmt != AV_PIX_FMT_YUV420P) {
 +        ost->tmp_frame = alloc_picture(AV_PIX_FMT_YUV420P, c->width, c->height);
 +        if (!ost->tmp_frame) {
 +            fprintf(stderr, "Could not allocate temporary picture\n");
 +            exit(1);
 +        }
 +    }
 +}
 +
 +/* Prepare a dummy image. */
 +static void fill_yuv_image(AVFrame *pict, int frame_index,
 +                           int width, int height)
 +{
 +    int x, y, i, ret;
 +
 +    /* when we pass a frame to the encoder, it may keep a reference to it
 +     * internally;
 +     * make sure we do not overwrite it here
 +     */
 +    ret = av_frame_make_writable(pict);
 +    if (ret < 0)
 +        exit(1);
 +
 +    i = frame_index;
 +
 +    /* Y */
 +    for (y = 0; y < height; y++)
 +        for (x = 0; x < width; x++)
 +            pict->data[0][y * pict->linesize[0] + x] = x + y + i * 3;
 +
 +    /* Cb and Cr */
 +    for (y = 0; y < height / 2; y++) {
 +        for (x = 0; x < width / 2; x++) {
 +            pict->data[1][y * pict->linesize[1] + x] = 128 + y + i * 2;
 +            pict->data[2][y * pict->linesize[2] + x] = 64 + x + i * 5;
 +        }
 +    }
 +}
 +
 +static AVFrame *get_video_frame(OutputStream *ost)
 +{
 +    AVCodecContext *c = ost->st->codec;
 +
 +    /* check if we want to generate more frames */
 +    if (av_compare_ts(ost->next_pts, ost->st->codec->time_base,
 +                      STREAM_DURATION, (AVRational){ 1, 1 }) >= 0)
 +        return NULL;
 +
 +    if (c->pix_fmt != AV_PIX_FMT_YUV420P) {
 +        /* as we only generate a YUV420P picture, we must convert it
 +         * to the codec pixel format if needed */
 +        if (!ost->sws_ctx) {
 +            ost->sws_ctx = sws_getContext(c->width, c->height,
 +                                          AV_PIX_FMT_YUV420P,
 +                                          c->width, c->height,
 +                                          c->pix_fmt,
 +                                          SCALE_FLAGS, NULL, NULL, NULL);
 +            if (!ost->sws_ctx) {
 +                fprintf(stderr,
 +                        "Could not initialize the conversion context\n");
 +                exit(1);
 +            }
 +        }
 +        fill_yuv_image(ost->tmp_frame, ost->next_pts, c->width, c->height);
 +        sws_scale(ost->sws_ctx,
 +                  (const uint8_t * const *)ost->tmp_frame->data, ost->tmp_frame->linesize,
 +                  0, c->height, ost->frame->data, ost->frame->linesize);
 +    } else {
 +        fill_yuv_image(ost->frame, ost->next_pts, c->width, c->height);
 +    }
 +
 +    ost->frame->pts = ost->next_pts++;
 +
 +    return ost->frame;
 +}
 +
 +/*
 + * encode one video frame and send it to the muxer
 + * return 1 when encoding is finished, 0 otherwise
 + */
 +static int write_video_frame(AVFormatContext *oc, OutputStream *ost)
 +{
 +    int ret;
 +    AVCodecContext *c;
 +    AVFrame *frame;
 +    int got_packet = 0;
 +
 +    c = ost->st->codec;
 +
 +    frame = get_video_frame(ost);
 +
 +    if (oc->oformat->flags & AVFMT_RAWPICTURE) {
 +        /* a hack to avoid data copy with some raw video muxers */
 +        AVPacket pkt;
 +        av_init_packet(&pkt);
 +
 +        if (!frame)
 +            return 1;
 +
 +        pkt.flags        |= AV_PKT_FLAG_KEY;
 +        pkt.stream_index  = ost->st->index;
 +        pkt.data          = (uint8_t *)frame;
 +        pkt.size          = sizeof(AVPicture);
 +
 +        pkt.pts = pkt.dts = frame->pts;
 +        av_packet_rescale_ts(&pkt, c->time_base, ost->st->time_base);
 +
 +        ret = av_interleaved_write_frame(oc, &pkt);
 +    } else {
 +        AVPacket pkt = { 0 };
 +        av_init_packet(&pkt);
 +
 +        /* encode the image */
 +        ret = avcodec_encode_video2(c, &pkt, frame, &got_packet);
 +        if (ret < 0) {
 +            fprintf(stderr, "Error encoding video frame: %s\n", av_err2str(ret));
 +            exit(1);
 +        }
 +
 +        if (got_packet) {
 +            ret = write_frame(oc, &c->time_base, ost->st, &pkt);
 +        } else {
 +            ret = 0;
 +        }
 +    }
 +
 +    if (ret < 0) {
 +        fprintf(stderr, "Error while writing video frame: %s\n", av_err2str(ret));
 +        exit(1);
 +    }
 +
 +    return (frame || got_packet) ? 0 : 1;
 +}
 +
 +static void close_stream(AVFormatContext *oc, OutputStream *ost)
 +{
 +    avcodec_close(ost->st->codec);
 +    av_frame_free(&ost->frame);
 +    av_frame_free(&ost->tmp_frame);
 +    sws_freeContext(ost->sws_ctx);
 +    swr_free(&ost->swr_ctx);
 +}
 +
 +/**************************************************************/
 +/* media file output */
 +
 +int main(int argc, char **argv)
 +{
 +    OutputStream video_st = { 0 }, audio_st = { 0 };
 +    const char *filename;
 +    AVOutputFormat *fmt;
 +    AVFormatContext *oc;
 +    AVCodec *audio_codec, *video_codec;
 +    int ret;
 +    int have_video = 0, have_audio = 0;
 +    int encode_video = 0, encode_audio = 0;
 +    AVDictionary *opt = NULL;
 +
 +    /* Initialize libavcodec, and register all codecs and formats. */
 +    av_register_all();
 +
 +    if (argc < 2) {
 +        printf("usage: %s output_file\n"
 +               "API example program to output a media file with libavformat.\n"
 +               "This program generates a synthetic audio and video stream, encodes and\n"
 +               "muxes them into a file named output_file.\n"
 +               "The output format is automatically guessed according to the file extension.\n"
 +               "Raw images can also be output by using '%%d' in the filename.\n"
 +               "\n", argv[0]);
 +        return 1;
 +    }
 +
 +    filename = argv[1];
 +    if (argc > 3 && !strcmp(argv[2], "-flags")) {
 +        av_dict_set(&opt, argv[2]+1, argv[3], 0);
 +    }
 +
 +    /* allocate the output media context */
 +    avformat_alloc_output_context2(&oc, NULL, NULL, filename);
 +    if (!oc) {
 +        printf("Could not deduce output format from file extension: using MPEG.\n");
 +        avformat_alloc_output_context2(&oc, NULL, "mpeg", filename);
 +    }
 +    if (!oc)
 +        return 1;
 +
 +    fmt = oc->oformat;
 +
 +    /* Add the audio and video streams using the default format codecs
 +     * and initialize the codecs. */
 +    if (fmt->video_codec != AV_CODEC_ID_NONE) {
 +        add_stream(&video_st, oc, &video_codec, fmt->video_codec);
 +        have_video = 1;
 +        encode_video = 1;
 +    }
 +    if (fmt->audio_codec != AV_CODEC_ID_NONE) {
 +        add_stream(&audio_st, oc, &audio_codec, fmt->audio_codec);
 +        have_audio = 1;
 +        encode_audio = 1;
 +    }
 +
 +    /* Now that all the parameters are set, we can open the audio and
 +     * video codecs and allocate the necessary encode buffers. */
 +    if (have_video)
 +        open_video(oc, video_codec, &video_st, opt);
 +
 +    if (have_audio)
 +        open_audio(oc, audio_codec, &audio_st, opt);
 +
 +    av_dump_format(oc, 0, filename, 1);
 +
 +    /* open the output file, if needed */
 +    if (!(fmt->flags & AVFMT_NOFILE)) {
 +        ret = avio_open(&oc->pb, filename, AVIO_FLAG_WRITE);
 +        if (ret < 0) {
 +            fprintf(stderr, "Could not open '%s': %s\n", filename,
 +                    av_err2str(ret));
 +            return 1;
 +        }
 +    }
 +
 +    /* Write the stream header, if any. */
 +    ret = avformat_write_header(oc, &opt);
 +    if (ret < 0) {
 +        fprintf(stderr, "Error occurred when opening output file: %s\n",
 +                av_err2str(ret));
 +        return 1;
 +    }
 +
 +    while (encode_video || encode_audio) {
 +        /* select the stream to encode */
 +        if (encode_video &&
 +            (!encode_audio || av_compare_ts(video_st.next_pts, video_st.st->codec->time_base,
 +                                            audio_st.next_pts, audio_st.st->codec->time_base) <= 0)) {
 +            encode_video = !write_video_frame(oc, &video_st);
 +        } else {
 +            encode_audio = !write_audio_frame(oc, &audio_st);
 +        }
 +    }
 +
 +    /* Write the trailer, if any. The trailer must be written before you
 +     * close the CodecContexts open when you wrote the header; otherwise
 +     * av_write_trailer() may try to use memory that was freed on
 +     * av_codec_close(). */
 +    av_write_trailer(oc);
 +
 +    /* Close each codec. */
 +    if (have_video)
 +        close_stream(oc, &video_st);
 +    if (have_audio)
 +        close_stream(oc, &audio_st);
 +
 +    if (!(fmt->flags & AVFMT_NOFILE))
 +        /* Close the output file. */
 +        avio_closep(&oc->pb);
 +
 +    /* free the stream */
 +    avformat_free_context(oc);
 +
 +    return 0;
 +}
index e9758a8,0000000..33037f7
mode 100644,000000..100644
--- /dev/null
@@@ -1,165 -1,0 +1,165 @@@
-             out_stream->codec->flags |= CODEC_FLAG_GLOBAL_HEADER;
 +/*
 + * Copyright (c) 2013 Stefano Sabatini
 + *
 + * Permission is hereby granted, free of charge, to any person obtaining a copy
 + * of this software and associated documentation files (the "Software"), to deal
 + * in the Software without restriction, including without limitation the rights
 + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 + * copies of the Software, and to permit persons to whom the Software is
 + * furnished to do so, subject to the following conditions:
 + *
 + * The above copyright notice and this permission notice shall be included in
 + * all copies or substantial portions of the Software.
 + *
 + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 + * THE SOFTWARE.
 + */
 +
 +/**
 + * @file
 + * libavformat/libavcodec demuxing and muxing API example.
 + *
 + * Remux streams from one container format to another.
 + * @example remuxing.c
 + */
 +
 +#include <libavutil/timestamp.h>
 +#include <libavformat/avformat.h>
 +
 +static void log_packet(const AVFormatContext *fmt_ctx, const AVPacket *pkt, const char *tag)
 +{
 +    AVRational *time_base = &fmt_ctx->streams[pkt->stream_index]->time_base;
 +
 +    printf("%s: pts:%s pts_time:%s dts:%s dts_time:%s duration:%s duration_time:%s stream_index:%d\n",
 +           tag,
 +           av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, time_base),
 +           av_ts2str(pkt->dts), av_ts2timestr(pkt->dts, time_base),
 +           av_ts2str(pkt->duration), av_ts2timestr(pkt->duration, time_base),
 +           pkt->stream_index);
 +}
 +
 +int main(int argc, char **argv)
 +{
 +    AVOutputFormat *ofmt = NULL;
 +    AVFormatContext *ifmt_ctx = NULL, *ofmt_ctx = NULL;
 +    AVPacket pkt;
 +    const char *in_filename, *out_filename;
 +    int ret, i;
 +
 +    if (argc < 3) {
 +        printf("usage: %s input output\n"
 +               "API example program to remux a media file with libavformat and libavcodec.\n"
 +               "The output format is guessed according to the file extension.\n"
 +               "\n", argv[0]);
 +        return 1;
 +    }
 +
 +    in_filename  = argv[1];
 +    out_filename = argv[2];
 +
 +    av_register_all();
 +
 +    if ((ret = avformat_open_input(&ifmt_ctx, in_filename, 0, 0)) < 0) {
 +        fprintf(stderr, "Could not open input file '%s'", in_filename);
 +        goto end;
 +    }
 +
 +    if ((ret = avformat_find_stream_info(ifmt_ctx, 0)) < 0) {
 +        fprintf(stderr, "Failed to retrieve input stream information");
 +        goto end;
 +    }
 +
 +    av_dump_format(ifmt_ctx, 0, in_filename, 0);
 +
 +    avformat_alloc_output_context2(&ofmt_ctx, NULL, NULL, out_filename);
 +    if (!ofmt_ctx) {
 +        fprintf(stderr, "Could not create output context\n");
 +        ret = AVERROR_UNKNOWN;
 +        goto end;
 +    }
 +
 +    ofmt = ofmt_ctx->oformat;
 +
 +    for (i = 0; i < ifmt_ctx->nb_streams; i++) {
 +        AVStream *in_stream = ifmt_ctx->streams[i];
 +        AVStream *out_stream = avformat_new_stream(ofmt_ctx, in_stream->codec->codec);
 +        if (!out_stream) {
 +            fprintf(stderr, "Failed allocating output stream\n");
 +            ret = AVERROR_UNKNOWN;
 +            goto end;
 +        }
 +
 +        ret = avcodec_copy_context(out_stream->codec, in_stream->codec);
 +        if (ret < 0) {
 +            fprintf(stderr, "Failed to copy context from input to output stream codec context\n");
 +            goto end;
 +        }
 +        out_stream->codec->codec_tag = 0;
 +        if (ofmt_ctx->oformat->flags & AVFMT_GLOBALHEADER)
++            out_stream->codec->flags |= AV_CODEC_FLAG_GLOBAL_HEADER;
 +    }
 +    av_dump_format(ofmt_ctx, 0, out_filename, 1);
 +
 +    if (!(ofmt->flags & AVFMT_NOFILE)) {
 +        ret = avio_open(&ofmt_ctx->pb, out_filename, AVIO_FLAG_WRITE);
 +        if (ret < 0) {
 +            fprintf(stderr, "Could not open output file '%s'", out_filename);
 +            goto end;
 +        }
 +    }
 +
 +    ret = avformat_write_header(ofmt_ctx, NULL);
 +    if (ret < 0) {
 +        fprintf(stderr, "Error occurred when opening output file\n");
 +        goto end;
 +    }
 +
 +    while (1) {
 +        AVStream *in_stream, *out_stream;
 +
 +        ret = av_read_frame(ifmt_ctx, &pkt);
 +        if (ret < 0)
 +            break;
 +
 +        in_stream  = ifmt_ctx->streams[pkt.stream_index];
 +        out_stream = ofmt_ctx->streams[pkt.stream_index];
 +
 +        log_packet(ifmt_ctx, &pkt, "in");
 +
 +        /* copy packet */
 +        pkt.pts = av_rescale_q_rnd(pkt.pts, in_stream->time_base, out_stream->time_base, AV_ROUND_NEAR_INF|AV_ROUND_PASS_MINMAX);
 +        pkt.dts = av_rescale_q_rnd(pkt.dts, in_stream->time_base, out_stream->time_base, AV_ROUND_NEAR_INF|AV_ROUND_PASS_MINMAX);
 +        pkt.duration = av_rescale_q(pkt.duration, in_stream->time_base, out_stream->time_base);
 +        pkt.pos = -1;
 +        log_packet(ofmt_ctx, &pkt, "out");
 +
 +        ret = av_interleaved_write_frame(ofmt_ctx, &pkt);
 +        if (ret < 0) {
 +            fprintf(stderr, "Error muxing packet\n");
 +            break;
 +        }
 +        av_free_packet(&pkt);
 +    }
 +
 +    av_write_trailer(ofmt_ctx);
 +end:
 +
 +    avformat_close_input(&ifmt_ctx);
 +
 +    /* close output */
 +    if (ofmt_ctx && !(ofmt->flags & AVFMT_NOFILE))
 +        avio_closep(&ofmt_ctx->pb);
 +    avformat_free_context(ofmt_ctx);
 +
 +    if (ret < 0 && ret != AVERROR_EOF) {
 +        fprintf(stderr, "Error occurred: %s\n", av_err2str(ret));
 +        return 1;
 +    }
 +
 +    return 0;
 +}
Simple merge
index 980e1f1,0000000..d7a9579
mode 100644,000000..100644
--- /dev/null
@@@ -1,583 -1,0 +1,583 @@@
-             enc_ctx->flags |= CODEC_FLAG_GLOBAL_HEADER;
 +/*
 + * Copyright (c) 2010 Nicolas George
 + * Copyright (c) 2011 Stefano Sabatini
 + * Copyright (c) 2014 Andrey Utkin
 + *
 + * Permission is hereby granted, free of charge, to any person obtaining a copy
 + * of this software and associated documentation files (the "Software"), to deal
 + * in the Software without restriction, including without limitation the rights
 + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 + * copies of the Software, and to permit persons to whom the Software is
 + * furnished to do so, subject to the following conditions:
 + *
 + * The above copyright notice and this permission notice shall be included in
 + * all copies or substantial portions of the Software.
 + *
 + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 + * THE SOFTWARE.
 + */
 +
 +/**
 + * @file
 + * API example for demuxing, decoding, filtering, encoding and muxing
 + * @example transcoding.c
 + */
 +
 +#include <libavcodec/avcodec.h>
 +#include <libavformat/avformat.h>
 +#include <libavfilter/avfiltergraph.h>
 +#include <libavfilter/avcodec.h>
 +#include <libavfilter/buffersink.h>
 +#include <libavfilter/buffersrc.h>
 +#include <libavutil/opt.h>
 +#include <libavutil/pixdesc.h>
 +
 +static AVFormatContext *ifmt_ctx;
 +static AVFormatContext *ofmt_ctx;
 +typedef struct FilteringContext {
 +    AVFilterContext *buffersink_ctx;
 +    AVFilterContext *buffersrc_ctx;
 +    AVFilterGraph *filter_graph;
 +} FilteringContext;
 +static FilteringContext *filter_ctx;
 +
 +static int open_input_file(const char *filename)
 +{
 +    int ret;
 +    unsigned int i;
 +
 +    ifmt_ctx = NULL;
 +    if ((ret = avformat_open_input(&ifmt_ctx, filename, NULL, NULL)) < 0) {
 +        av_log(NULL, AV_LOG_ERROR, "Cannot open input file\n");
 +        return ret;
 +    }
 +
 +    if ((ret = avformat_find_stream_info(ifmt_ctx, NULL)) < 0) {
 +        av_log(NULL, AV_LOG_ERROR, "Cannot find stream information\n");
 +        return ret;
 +    }
 +
 +    for (i = 0; i < ifmt_ctx->nb_streams; i++) {
 +        AVStream *stream;
 +        AVCodecContext *codec_ctx;
 +        stream = ifmt_ctx->streams[i];
 +        codec_ctx = stream->codec;
 +        /* Reencode video & audio and remux subtitles etc. */
 +        if (codec_ctx->codec_type == AVMEDIA_TYPE_VIDEO
 +                || codec_ctx->codec_type == AVMEDIA_TYPE_AUDIO) {
 +            /* Open decoder */
 +            ret = avcodec_open2(codec_ctx,
 +                    avcodec_find_decoder(codec_ctx->codec_id), NULL);
 +            if (ret < 0) {
 +                av_log(NULL, AV_LOG_ERROR, "Failed to open decoder for stream #%u\n", i);
 +                return ret;
 +            }
 +        }
 +    }
 +
 +    av_dump_format(ifmt_ctx, 0, filename, 0);
 +    return 0;
 +}
 +
 +static int open_output_file(const char *filename)
 +{
 +    AVStream *out_stream;
 +    AVStream *in_stream;
 +    AVCodecContext *dec_ctx, *enc_ctx;
 +    AVCodec *encoder;
 +    int ret;
 +    unsigned int i;
 +
 +    ofmt_ctx = NULL;
 +    avformat_alloc_output_context2(&ofmt_ctx, NULL, NULL, filename);
 +    if (!ofmt_ctx) {
 +        av_log(NULL, AV_LOG_ERROR, "Could not create output context\n");
 +        return AVERROR_UNKNOWN;
 +    }
 +
 +
 +    for (i = 0; i < ifmt_ctx->nb_streams; i++) {
 +        out_stream = avformat_new_stream(ofmt_ctx, NULL);
 +        if (!out_stream) {
 +            av_log(NULL, AV_LOG_ERROR, "Failed allocating output stream\n");
 +            return AVERROR_UNKNOWN;
 +        }
 +
 +        in_stream = ifmt_ctx->streams[i];
 +        dec_ctx = in_stream->codec;
 +        enc_ctx = out_stream->codec;
 +
 +        if (dec_ctx->codec_type == AVMEDIA_TYPE_VIDEO
 +                || dec_ctx->codec_type == AVMEDIA_TYPE_AUDIO) {
 +            /* in this example, we choose transcoding to same codec */
 +            encoder = avcodec_find_encoder(dec_ctx->codec_id);
 +            if (!encoder) {
 +                av_log(NULL, AV_LOG_FATAL, "Necessary encoder not found\n");
 +                return AVERROR_INVALIDDATA;
 +            }
 +
 +            /* In this example, we transcode to same properties (picture size,
 +             * sample rate etc.). These properties can be changed for output
 +             * streams easily using filters */
 +            if (dec_ctx->codec_type == AVMEDIA_TYPE_VIDEO) {
 +                enc_ctx->height = dec_ctx->height;
 +                enc_ctx->width = dec_ctx->width;
 +                enc_ctx->sample_aspect_ratio = dec_ctx->sample_aspect_ratio;
 +                /* take first format from list of supported formats */
 +                enc_ctx->pix_fmt = encoder->pix_fmts[0];
 +                /* video time_base can be set to whatever is handy and supported by encoder */
 +                enc_ctx->time_base = dec_ctx->time_base;
 +            } else {
 +                enc_ctx->sample_rate = dec_ctx->sample_rate;
 +                enc_ctx->channel_layout = dec_ctx->channel_layout;
 +                enc_ctx->channels = av_get_channel_layout_nb_channels(enc_ctx->channel_layout);
 +                /* take first format from list of supported formats */
 +                enc_ctx->sample_fmt = encoder->sample_fmts[0];
 +                enc_ctx->time_base = (AVRational){1, enc_ctx->sample_rate};
 +            }
 +
 +            /* Third parameter can be used to pass settings to encoder */
 +            ret = avcodec_open2(enc_ctx, encoder, NULL);
 +            if (ret < 0) {
 +                av_log(NULL, AV_LOG_ERROR, "Cannot open video encoder for stream #%u\n", i);
 +                return ret;
 +            }
 +        } else if (dec_ctx->codec_type == AVMEDIA_TYPE_UNKNOWN) {
 +            av_log(NULL, AV_LOG_FATAL, "Elementary stream #%d is of unknown type, cannot proceed\n", i);
 +            return AVERROR_INVALIDDATA;
 +        } else {
 +            /* if this stream must be remuxed */
 +            ret = avcodec_copy_context(ofmt_ctx->streams[i]->codec,
 +                    ifmt_ctx->streams[i]->codec);
 +            if (ret < 0) {
 +                av_log(NULL, AV_LOG_ERROR, "Copying stream context failed\n");
 +                return ret;
 +            }
 +        }
 +
 +        if (ofmt_ctx->oformat->flags & AVFMT_GLOBALHEADER)
++            enc_ctx->flags |= AV_CODEC_FLAG_GLOBAL_HEADER;
 +
 +    }
 +    av_dump_format(ofmt_ctx, 0, filename, 1);
 +
 +    if (!(ofmt_ctx->oformat->flags & AVFMT_NOFILE)) {
 +        ret = avio_open(&ofmt_ctx->pb, filename, AVIO_FLAG_WRITE);
 +        if (ret < 0) {
 +            av_log(NULL, AV_LOG_ERROR, "Could not open output file '%s'", filename);
 +            return ret;
 +        }
 +    }
 +
 +    /* init muxer, write output file header */
 +    ret = avformat_write_header(ofmt_ctx, NULL);
 +    if (ret < 0) {
 +        av_log(NULL, AV_LOG_ERROR, "Error occurred when opening output file\n");
 +        return ret;
 +    }
 +
 +    return 0;
 +}
 +
 +static int init_filter(FilteringContext* fctx, AVCodecContext *dec_ctx,
 +        AVCodecContext *enc_ctx, const char *filter_spec)
 +{
 +    char args[512];
 +    int ret = 0;
 +    AVFilter *buffersrc = NULL;
 +    AVFilter *buffersink = NULL;
 +    AVFilterContext *buffersrc_ctx = NULL;
 +    AVFilterContext *buffersink_ctx = NULL;
 +    AVFilterInOut *outputs = avfilter_inout_alloc();
 +    AVFilterInOut *inputs  = avfilter_inout_alloc();
 +    AVFilterGraph *filter_graph = avfilter_graph_alloc();
 +
 +    if (!outputs || !inputs || !filter_graph) {
 +        ret = AVERROR(ENOMEM);
 +        goto end;
 +    }
 +
 +    if (dec_ctx->codec_type == AVMEDIA_TYPE_VIDEO) {
 +        buffersrc = avfilter_get_by_name("buffer");
 +        buffersink = avfilter_get_by_name("buffersink");
 +        if (!buffersrc || !buffersink) {
 +            av_log(NULL, AV_LOG_ERROR, "filtering source or sink element not found\n");
 +            ret = AVERROR_UNKNOWN;
 +            goto end;
 +        }
 +
 +        snprintf(args, sizeof(args),
 +                "video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:pixel_aspect=%d/%d",
 +                dec_ctx->width, dec_ctx->height, dec_ctx->pix_fmt,
 +                dec_ctx->time_base.num, dec_ctx->time_base.den,
 +                dec_ctx->sample_aspect_ratio.num,
 +                dec_ctx->sample_aspect_ratio.den);
 +
 +        ret = avfilter_graph_create_filter(&buffersrc_ctx, buffersrc, "in",
 +                args, NULL, filter_graph);
 +        if (ret < 0) {
 +            av_log(NULL, AV_LOG_ERROR, "Cannot create buffer source\n");
 +            goto end;
 +        }
 +
 +        ret = avfilter_graph_create_filter(&buffersink_ctx, buffersink, "out",
 +                NULL, NULL, filter_graph);
 +        if (ret < 0) {
 +            av_log(NULL, AV_LOG_ERROR, "Cannot create buffer sink\n");
 +            goto end;
 +        }
 +
 +        ret = av_opt_set_bin(buffersink_ctx, "pix_fmts",
 +                (uint8_t*)&enc_ctx->pix_fmt, sizeof(enc_ctx->pix_fmt),
 +                AV_OPT_SEARCH_CHILDREN);
 +        if (ret < 0) {
 +            av_log(NULL, AV_LOG_ERROR, "Cannot set output pixel format\n");
 +            goto end;
 +        }
 +    } else if (dec_ctx->codec_type == AVMEDIA_TYPE_AUDIO) {
 +        buffersrc = avfilter_get_by_name("abuffer");
 +        buffersink = avfilter_get_by_name("abuffersink");
 +        if (!buffersrc || !buffersink) {
 +            av_log(NULL, AV_LOG_ERROR, "filtering source or sink element not found\n");
 +            ret = AVERROR_UNKNOWN;
 +            goto end;
 +        }
 +
 +        if (!dec_ctx->channel_layout)
 +            dec_ctx->channel_layout =
 +                av_get_default_channel_layout(dec_ctx->channels);
 +        snprintf(args, sizeof(args),
 +                "time_base=%d/%d:sample_rate=%d:sample_fmt=%s:channel_layout=0x%"PRIx64,
 +                dec_ctx->time_base.num, dec_ctx->time_base.den, dec_ctx->sample_rate,
 +                av_get_sample_fmt_name(dec_ctx->sample_fmt),
 +                dec_ctx->channel_layout);
 +        ret = avfilter_graph_create_filter(&buffersrc_ctx, buffersrc, "in",
 +                args, NULL, filter_graph);
 +        if (ret < 0) {
 +            av_log(NULL, AV_LOG_ERROR, "Cannot create audio buffer source\n");
 +            goto end;
 +        }
 +
 +        ret = avfilter_graph_create_filter(&buffersink_ctx, buffersink, "out",
 +                NULL, NULL, filter_graph);
 +        if (ret < 0) {
 +            av_log(NULL, AV_LOG_ERROR, "Cannot create audio buffer sink\n");
 +            goto end;
 +        }
 +
 +        ret = av_opt_set_bin(buffersink_ctx, "sample_fmts",
 +                (uint8_t*)&enc_ctx->sample_fmt, sizeof(enc_ctx->sample_fmt),
 +                AV_OPT_SEARCH_CHILDREN);
 +        if (ret < 0) {
 +            av_log(NULL, AV_LOG_ERROR, "Cannot set output sample format\n");
 +            goto end;
 +        }
 +
 +        ret = av_opt_set_bin(buffersink_ctx, "channel_layouts",
 +                (uint8_t*)&enc_ctx->channel_layout,
 +                sizeof(enc_ctx->channel_layout), AV_OPT_SEARCH_CHILDREN);
 +        if (ret < 0) {
 +            av_log(NULL, AV_LOG_ERROR, "Cannot set output channel layout\n");
 +            goto end;
 +        }
 +
 +        ret = av_opt_set_bin(buffersink_ctx, "sample_rates",
 +                (uint8_t*)&enc_ctx->sample_rate, sizeof(enc_ctx->sample_rate),
 +                AV_OPT_SEARCH_CHILDREN);
 +        if (ret < 0) {
 +            av_log(NULL, AV_LOG_ERROR, "Cannot set output sample rate\n");
 +            goto end;
 +        }
 +    } else {
 +        ret = AVERROR_UNKNOWN;
 +        goto end;
 +    }
 +
 +    /* Endpoints for the filter graph. */
 +    outputs->name       = av_strdup("in");
 +    outputs->filter_ctx = buffersrc_ctx;
 +    outputs->pad_idx    = 0;
 +    outputs->next       = NULL;
 +
 +    inputs->name       = av_strdup("out");
 +    inputs->filter_ctx = buffersink_ctx;
 +    inputs->pad_idx    = 0;
 +    inputs->next       = NULL;
 +
 +    if (!outputs->name || !inputs->name) {
 +        ret = AVERROR(ENOMEM);
 +        goto end;
 +    }
 +
 +    if ((ret = avfilter_graph_parse_ptr(filter_graph, filter_spec,
 +                    &inputs, &outputs, NULL)) < 0)
 +        goto end;
 +
 +    if ((ret = avfilter_graph_config(filter_graph, NULL)) < 0)
 +        goto end;
 +
 +    /* Fill FilteringContext */
 +    fctx->buffersrc_ctx = buffersrc_ctx;
 +    fctx->buffersink_ctx = buffersink_ctx;
 +    fctx->filter_graph = filter_graph;
 +
 +end:
 +    avfilter_inout_free(&inputs);
 +    avfilter_inout_free(&outputs);
 +
 +    return ret;
 +}
 +
 +static int init_filters(void)
 +{
 +    const char *filter_spec;
 +    unsigned int i;
 +    int ret;
 +    filter_ctx = av_malloc_array(ifmt_ctx->nb_streams, sizeof(*filter_ctx));
 +    if (!filter_ctx)
 +        return AVERROR(ENOMEM);
 +
 +    for (i = 0; i < ifmt_ctx->nb_streams; i++) {
 +        filter_ctx[i].buffersrc_ctx  = NULL;
 +        filter_ctx[i].buffersink_ctx = NULL;
 +        filter_ctx[i].filter_graph   = NULL;
 +        if (!(ifmt_ctx->streams[i]->codec->codec_type == AVMEDIA_TYPE_AUDIO
 +                || ifmt_ctx->streams[i]->codec->codec_type == AVMEDIA_TYPE_VIDEO))
 +            continue;
 +
 +
 +        if (ifmt_ctx->streams[i]->codec->codec_type == AVMEDIA_TYPE_VIDEO)
 +            filter_spec = "null"; /* passthrough (dummy) filter for video */
 +        else
 +            filter_spec = "anull"; /* passthrough (dummy) filter for audio */
 +        ret = init_filter(&filter_ctx[i], ifmt_ctx->streams[i]->codec,
 +                ofmt_ctx->streams[i]->codec, filter_spec);
 +        if (ret)
 +            return ret;
 +    }
 +    return 0;
 +}
 +
 +static int encode_write_frame(AVFrame *filt_frame, unsigned int stream_index, int *got_frame) {
 +    int ret;
 +    int got_frame_local;
 +    AVPacket enc_pkt;
 +    int (*enc_func)(AVCodecContext *, AVPacket *, const AVFrame *, int *) =
 +        (ifmt_ctx->streams[stream_index]->codec->codec_type ==
 +         AVMEDIA_TYPE_VIDEO) ? avcodec_encode_video2 : avcodec_encode_audio2;
 +
 +    if (!got_frame)
 +        got_frame = &got_frame_local;
 +
 +    av_log(NULL, AV_LOG_INFO, "Encoding frame\n");
 +    /* encode filtered frame */
 +    enc_pkt.data = NULL;
 +    enc_pkt.size = 0;
 +    av_init_packet(&enc_pkt);
 +    ret = enc_func(ofmt_ctx->streams[stream_index]->codec, &enc_pkt,
 +            filt_frame, got_frame);
 +    av_frame_free(&filt_frame);
 +    if (ret < 0)
 +        return ret;
 +    if (!(*got_frame))
 +        return 0;
 +
 +    /* prepare packet for muxing */
 +    enc_pkt.stream_index = stream_index;
 +    av_packet_rescale_ts(&enc_pkt,
 +                         ofmt_ctx->streams[stream_index]->codec->time_base,
 +                         ofmt_ctx->streams[stream_index]->time_base);
 +
 +    av_log(NULL, AV_LOG_DEBUG, "Muxing frame\n");
 +    /* mux encoded frame */
 +    ret = av_interleaved_write_frame(ofmt_ctx, &enc_pkt);
 +    return ret;
 +}
 +
 +static int filter_encode_write_frame(AVFrame *frame, unsigned int stream_index)
 +{
 +    int ret;
 +    AVFrame *filt_frame;
 +
 +    av_log(NULL, AV_LOG_INFO, "Pushing decoded frame to filters\n");
 +    /* push the decoded frame into the filtergraph */
 +    ret = av_buffersrc_add_frame_flags(filter_ctx[stream_index].buffersrc_ctx,
 +            frame, 0);
 +    if (ret < 0) {
 +        av_log(NULL, AV_LOG_ERROR, "Error while feeding the filtergraph\n");
 +        return ret;
 +    }
 +
 +    /* pull filtered frames from the filtergraph */
 +    while (1) {
 +        filt_frame = av_frame_alloc();
 +        if (!filt_frame) {
 +            ret = AVERROR(ENOMEM);
 +            break;
 +        }
 +        av_log(NULL, AV_LOG_INFO, "Pulling filtered frame from filters\n");
 +        ret = av_buffersink_get_frame(filter_ctx[stream_index].buffersink_ctx,
 +                filt_frame);
 +        if (ret < 0) {
 +            /* if no more frames for output - returns AVERROR(EAGAIN)
 +             * if flushed and no more frames for output - returns AVERROR_EOF
 +             * rewrite retcode to 0 to show it as normal procedure completion
 +             */
 +            if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
 +                ret = 0;
 +            av_frame_free(&filt_frame);
 +            break;
 +        }
 +
 +        filt_frame->pict_type = AV_PICTURE_TYPE_NONE;
 +        ret = encode_write_frame(filt_frame, stream_index, NULL);
 +        if (ret < 0)
 +            break;
 +    }
 +
 +    return ret;
 +}
 +
 +static int flush_encoder(unsigned int stream_index)
 +{
 +    int ret;
 +    int got_frame;
 +
 +    if (!(ofmt_ctx->streams[stream_index]->codec->codec->capabilities &
 +                CODEC_CAP_DELAY))
 +        return 0;
 +
 +    while (1) {
 +        av_log(NULL, AV_LOG_INFO, "Flushing stream #%u encoder\n", stream_index);
 +        ret = encode_write_frame(NULL, stream_index, &got_frame);
 +        if (ret < 0)
 +            break;
 +        if (!got_frame)
 +            return 0;
 +    }
 +    return ret;
 +}
 +
 +int main(int argc, char **argv)
 +{
 +    int ret;
 +    AVPacket packet = { .data = NULL, .size = 0 };
 +    AVFrame *frame = NULL;
 +    enum AVMediaType type;
 +    unsigned int stream_index;
 +    unsigned int i;
 +    int got_frame;
 +    int (*dec_func)(AVCodecContext *, AVFrame *, int *, const AVPacket *);
 +
 +    if (argc != 3) {
 +        av_log(NULL, AV_LOG_ERROR, "Usage: %s <input file> <output file>\n", argv[0]);
 +        return 1;
 +    }
 +
 +    av_register_all();
 +    avfilter_register_all();
 +
 +    if ((ret = open_input_file(argv[1])) < 0)
 +        goto end;
 +    if ((ret = open_output_file(argv[2])) < 0)
 +        goto end;
 +    if ((ret = init_filters()) < 0)
 +        goto end;
 +
 +    /* read all packets */
 +    while (1) {
 +        if ((ret = av_read_frame(ifmt_ctx, &packet)) < 0)
 +            break;
 +        stream_index = packet.stream_index;
 +        type = ifmt_ctx->streams[packet.stream_index]->codec->codec_type;
 +        av_log(NULL, AV_LOG_DEBUG, "Demuxer gave frame of stream_index %u\n",
 +                stream_index);
 +
 +        if (filter_ctx[stream_index].filter_graph) {
 +            av_log(NULL, AV_LOG_DEBUG, "Going to reencode&filter the frame\n");
 +            frame = av_frame_alloc();
 +            if (!frame) {
 +                ret = AVERROR(ENOMEM);
 +                break;
 +            }
 +            av_packet_rescale_ts(&packet,
 +                                 ifmt_ctx->streams[stream_index]->time_base,
 +                                 ifmt_ctx->streams[stream_index]->codec->time_base);
 +            dec_func = (type == AVMEDIA_TYPE_VIDEO) ? avcodec_decode_video2 :
 +                avcodec_decode_audio4;
 +            ret = dec_func(ifmt_ctx->streams[stream_index]->codec, frame,
 +                    &got_frame, &packet);
 +            if (ret < 0) {
 +                av_frame_free(&frame);
 +                av_log(NULL, AV_LOG_ERROR, "Decoding failed\n");
 +                break;
 +            }
 +
 +            if (got_frame) {
 +                frame->pts = av_frame_get_best_effort_timestamp(frame);
 +                ret = filter_encode_write_frame(frame, stream_index);
 +                av_frame_free(&frame);
 +                if (ret < 0)
 +                    goto end;
 +            } else {
 +                av_frame_free(&frame);
 +            }
 +        } else {
 +            /* remux this frame without reencoding */
 +            av_packet_rescale_ts(&packet,
 +                                 ifmt_ctx->streams[stream_index]->time_base,
 +                                 ofmt_ctx->streams[stream_index]->time_base);
 +
 +            ret = av_interleaved_write_frame(ofmt_ctx, &packet);
 +            if (ret < 0)
 +                goto end;
 +        }
 +        av_free_packet(&packet);
 +    }
 +
 +    /* flush filters and encoders */
 +    for (i = 0; i < ifmt_ctx->nb_streams; i++) {
 +        /* flush filter */
 +        if (!filter_ctx[i].filter_graph)
 +            continue;
 +        ret = filter_encode_write_frame(NULL, i);
 +        if (ret < 0) {
 +            av_log(NULL, AV_LOG_ERROR, "Flushing filter failed\n");
 +            goto end;
 +        }
 +
 +        /* flush encoder */
 +        ret = flush_encoder(i);
 +        if (ret < 0) {
 +            av_log(NULL, AV_LOG_ERROR, "Flushing encoder failed\n");
 +            goto end;
 +        }
 +    }
 +
 +    av_write_trailer(ofmt_ctx);
 +end:
 +    av_free_packet(&packet);
 +    av_frame_free(&frame);
 +    for (i = 0; i < ifmt_ctx->nb_streams; i++) {
 +        avcodec_close(ifmt_ctx->streams[i]->codec);
 +        if (ofmt_ctx && ofmt_ctx->nb_streams > i && ofmt_ctx->streams[i] && ofmt_ctx->streams[i]->codec)
 +            avcodec_close(ofmt_ctx->streams[i]->codec);
 +        if (filter_ctx && filter_ctx[i].filter_graph)
 +            avfilter_graph_free(&filter_ctx[i].filter_graph);
 +    }
 +    av_free(filter_ctx);
 +    avformat_close_input(&ifmt_ctx);
 +    if (ofmt_ctx && !(ofmt_ctx->oformat->flags & AVFMT_NOFILE))
 +        avio_closep(&ofmt_ctx->pb);
 +    avformat_free_context(ofmt_ctx);
 +
 +    if (ret < 0)
 +        av_log(NULL, AV_LOG_ERROR, "Error occurred: %s\n", av_err2str(ret));
 +
 +    return ret ? 1 : 0;
 +}
diff --cc ffmpeg.c
index 751c7d3,0000000..b641039
mode 100644,000000..100644
--- /dev/null
+++ b/ffmpeg.c
@@@ -1,4141 -1,0 +1,4141 @@@
-         if (enc->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME) &&
 +/*
 + * Copyright (c) 2000-2003 Fabrice Bellard
 + *
 + * This file is part of FFmpeg.
 + *
 + * FFmpeg is free software; you can redistribute it and/or
 + * modify it under the terms of the GNU Lesser General Public
 + * License as published by the Free Software Foundation; either
 + * version 2.1 of the License, or (at your option) any later version.
 + *
 + * FFmpeg is distributed in the hope that it will be useful,
 + * but WITHOUT ANY WARRANTY; without even the implied warranty of
 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 + * Lesser General Public License for more details.
 + *
 + * You should have received a copy of the GNU Lesser General Public
 + * License along with FFmpeg; if not, write to the Free Software
 + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 + */
 +
 +/**
 + * @file
 + * multimedia converter based on the FFmpeg libraries
 + */
 +
 +#include "config.h"
 +#include <ctype.h>
 +#include <string.h>
 +#include <math.h>
 +#include <stdlib.h>
 +#include <errno.h>
 +#include <limits.h>
 +#include <stdint.h>
 +
 +#if HAVE_ISATTY
 +#if HAVE_IO_H
 +#include <io.h>
 +#endif
 +#if HAVE_UNISTD_H
 +#include <unistd.h>
 +#endif
 +#endif
 +
 +#include "libavformat/avformat.h"
 +#include "libavdevice/avdevice.h"
 +#include "libswresample/swresample.h"
 +#include "libavutil/opt.h"
 +#include "libavutil/channel_layout.h"
 +#include "libavutil/parseutils.h"
 +#include "libavutil/samplefmt.h"
 +#include "libavutil/fifo.h"
 +#include "libavutil/internal.h"
 +#include "libavutil/intreadwrite.h"
 +#include "libavutil/dict.h"
 +#include "libavutil/mathematics.h"
 +#include "libavutil/pixdesc.h"
 +#include "libavutil/avstring.h"
 +#include "libavutil/libm.h"
 +#include "libavutil/imgutils.h"
 +#include "libavutil/timestamp.h"
 +#include "libavutil/bprint.h"
 +#include "libavutil/time.h"
 +#include "libavutil/threadmessage.h"
 +#include "libavcodec/mathops.h"
 +#include "libavformat/os_support.h"
 +
 +# include "libavfilter/avcodec.h"
 +# include "libavfilter/avfilter.h"
 +# include "libavfilter/buffersrc.h"
 +# include "libavfilter/buffersink.h"
 +
 +#if HAVE_SYS_RESOURCE_H
 +#include <sys/time.h>
 +#include <sys/types.h>
 +#include <sys/resource.h>
 +#elif HAVE_GETPROCESSTIMES
 +#include <windows.h>
 +#endif
 +#if HAVE_GETPROCESSMEMORYINFO
 +#include <windows.h>
 +#include <psapi.h>
 +#endif
 +#if HAVE_SETCONSOLECTRLHANDLER
 +#include <windows.h>
 +#endif
 +
 +
 +#if HAVE_SYS_SELECT_H
 +#include <sys/select.h>
 +#endif
 +
 +#if HAVE_TERMIOS_H
 +#include <fcntl.h>
 +#include <sys/ioctl.h>
 +#include <sys/time.h>
 +#include <termios.h>
 +#elif HAVE_KBHIT
 +#include <conio.h>
 +#endif
 +
 +#if HAVE_PTHREADS
 +#include <pthread.h>
 +#endif
 +
 +#include <time.h>
 +
 +#include "ffmpeg.h"
 +#include "cmdutils.h"
 +
 +#include "libavutil/avassert.h"
 +
 +const char program_name[] = "ffmpeg";
 +const int program_birth_year = 2000;
 +
 +static FILE *vstats_file;
 +
 +const char *const forced_keyframes_const_names[] = {
 +    "n",
 +    "n_forced",
 +    "prev_forced_n",
 +    "prev_forced_t",
 +    "t",
 +    NULL
 +};
 +
 +static void do_video_stats(OutputStream *ost, int frame_size);
 +static int64_t getutime(void);
 +static int64_t getmaxrss(void);
 +
 +static int run_as_daemon  = 0;
 +static int nb_frames_dup = 0;
 +static int nb_frames_drop = 0;
 +static int64_t decode_error_stat[2];
 +
 +static int current_time;
 +AVIOContext *progress_avio = NULL;
 +
 +static uint8_t *subtitle_out;
 +
 +InputStream **input_streams = NULL;
 +int        nb_input_streams = 0;
 +InputFile   **input_files   = NULL;
 +int        nb_input_files   = 0;
 +
 +OutputStream **output_streams = NULL;
 +int         nb_output_streams = 0;
 +OutputFile   **output_files   = NULL;
 +int         nb_output_files   = 0;
 +
 +FilterGraph **filtergraphs;
 +int        nb_filtergraphs;
 +
 +#if HAVE_TERMIOS_H
 +
 +/* init terminal so that we can grab keys */
 +static struct termios oldtty;
 +static int restore_tty;
 +#endif
 +
 +#if HAVE_PTHREADS
 +static void free_input_threads(void);
 +#endif
 +
 +/* sub2video hack:
 +   Convert subtitles to video with alpha to insert them in filter graphs.
 +   This is a temporary solution until libavfilter gets real subtitles support.
 + */
 +
 +static int sub2video_get_blank_frame(InputStream *ist)
 +{
 +    int ret;
 +    AVFrame *frame = ist->sub2video.frame;
 +
 +    av_frame_unref(frame);
 +    ist->sub2video.frame->width  = ist->sub2video.w;
 +    ist->sub2video.frame->height = ist->sub2video.h;
 +    ist->sub2video.frame->format = AV_PIX_FMT_RGB32;
 +    if ((ret = av_frame_get_buffer(frame, 32)) < 0)
 +        return ret;
 +    memset(frame->data[0], 0, frame->height * frame->linesize[0]);
 +    return 0;
 +}
 +
 +static void sub2video_copy_rect(uint8_t *dst, int dst_linesize, int w, int h,
 +                                AVSubtitleRect *r)
 +{
 +    uint32_t *pal, *dst2;
 +    uint8_t *src, *src2;
 +    int x, y;
 +
 +    if (r->type != SUBTITLE_BITMAP) {
 +        av_log(NULL, AV_LOG_WARNING, "sub2video: non-bitmap subtitle\n");
 +        return;
 +    }
 +    if (r->x < 0 || r->x + r->w > w || r->y < 0 || r->y + r->h > h) {
 +        av_log(NULL, AV_LOG_WARNING, "sub2video: rectangle overflowing\n");
 +        return;
 +    }
 +
 +    dst += r->y * dst_linesize + r->x * 4;
 +    src = r->pict.data[0];
 +    pal = (uint32_t *)r->pict.data[1];
 +    for (y = 0; y < r->h; y++) {
 +        dst2 = (uint32_t *)dst;
 +        src2 = src;
 +        for (x = 0; x < r->w; x++)
 +            *(dst2++) = pal[*(src2++)];
 +        dst += dst_linesize;
 +        src += r->pict.linesize[0];
 +    }
 +}
 +
 +static void sub2video_push_ref(InputStream *ist, int64_t pts)
 +{
 +    AVFrame *frame = ist->sub2video.frame;
 +    int i;
 +
 +    av_assert1(frame->data[0]);
 +    ist->sub2video.last_pts = frame->pts = pts;
 +    for (i = 0; i < ist->nb_filters; i++)
 +        av_buffersrc_add_frame_flags(ist->filters[i]->filter, frame,
 +                                     AV_BUFFERSRC_FLAG_KEEP_REF |
 +                                     AV_BUFFERSRC_FLAG_PUSH);
 +}
 +
 +static void sub2video_update(InputStream *ist, AVSubtitle *sub)
 +{
 +    int w = ist->sub2video.w, h = ist->sub2video.h;
 +    AVFrame *frame = ist->sub2video.frame;
 +    int8_t *dst;
 +    int     dst_linesize;
 +    int num_rects, i;
 +    int64_t pts, end_pts;
 +
 +    if (!frame)
 +        return;
 +    if (sub) {
 +        pts       = av_rescale_q(sub->pts + sub->start_display_time * 1000LL,
 +                                 AV_TIME_BASE_Q, ist->st->time_base);
 +        end_pts   = av_rescale_q(sub->pts + sub->end_display_time   * 1000LL,
 +                                 AV_TIME_BASE_Q, ist->st->time_base);
 +        num_rects = sub->num_rects;
 +    } else {
 +        pts       = ist->sub2video.end_pts;
 +        end_pts   = INT64_MAX;
 +        num_rects = 0;
 +    }
 +    if (sub2video_get_blank_frame(ist) < 0) {
 +        av_log(ist->dec_ctx, AV_LOG_ERROR,
 +               "Impossible to get a blank canvas.\n");
 +        return;
 +    }
 +    dst          = frame->data    [0];
 +    dst_linesize = frame->linesize[0];
 +    for (i = 0; i < num_rects; i++)
 +        sub2video_copy_rect(dst, dst_linesize, w, h, sub->rects[i]);
 +    sub2video_push_ref(ist, pts);
 +    ist->sub2video.end_pts = end_pts;
 +}
 +
 +static void sub2video_heartbeat(InputStream *ist, int64_t pts)
 +{
 +    InputFile *infile = input_files[ist->file_index];
 +    int i, j, nb_reqs;
 +    int64_t pts2;
 +
 +    /* When a frame is read from a file, examine all sub2video streams in
 +       the same file and send the sub2video frame again. Otherwise, decoded
 +       video frames could be accumulating in the filter graph while a filter
 +       (possibly overlay) is desperately waiting for a subtitle frame. */
 +    for (i = 0; i < infile->nb_streams; i++) {
 +        InputStream *ist2 = input_streams[infile->ist_index + i];
 +        if (!ist2->sub2video.frame)
 +            continue;
 +        /* subtitles seem to be usually muxed ahead of other streams;
 +           if not, subtracting a larger time here is necessary */
 +        pts2 = av_rescale_q(pts, ist->st->time_base, ist2->st->time_base) - 1;
 +        /* do not send the heartbeat frame if the subtitle is already ahead */
 +        if (pts2 <= ist2->sub2video.last_pts)
 +            continue;
 +        if (pts2 >= ist2->sub2video.end_pts || !ist2->sub2video.frame->data[0])
 +            sub2video_update(ist2, NULL);
 +        for (j = 0, nb_reqs = 0; j < ist2->nb_filters; j++)
 +            nb_reqs += av_buffersrc_get_nb_failed_requests(ist2->filters[j]->filter);
 +        if (nb_reqs)
 +            sub2video_push_ref(ist2, pts2);
 +    }
 +}
 +
 +static void sub2video_flush(InputStream *ist)
 +{
 +    int i;
 +
 +    if (ist->sub2video.end_pts < INT64_MAX)
 +        sub2video_update(ist, NULL);
 +    for (i = 0; i < ist->nb_filters; i++)
 +        av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
 +}
 +
 +/* end of sub2video hack */
 +
 +static void term_exit_sigsafe(void)
 +{
 +#if HAVE_TERMIOS_H
 +    if(restore_tty)
 +        tcsetattr (0, TCSANOW, &oldtty);
 +#endif
 +}
 +
 +void term_exit(void)
 +{
 +    av_log(NULL, AV_LOG_QUIET, "%s", "");
 +    term_exit_sigsafe();
 +}
 +
 +static volatile int received_sigterm = 0;
 +static volatile int received_nb_signals = 0;
 +static volatile int transcode_init_done = 0;
 +static volatile int ffmpeg_exited = 0;
 +static int main_return_code = 0;
 +
 +static void
 +sigterm_handler(int sig)
 +{
 +    received_sigterm = sig;
 +    received_nb_signals++;
 +    term_exit_sigsafe();
 +    if(received_nb_signals > 3) {
 +        write(2/*STDERR_FILENO*/, "Received > 3 system signals, hard exiting\n",
 +                           strlen("Received > 3 system signals, hard exiting\n"));
 +
 +        exit(123);
 +    }
 +}
 +
 +#if HAVE_SETCONSOLECTRLHANDLER
 +static BOOL WINAPI CtrlHandler(DWORD fdwCtrlType)
 +{
 +    av_log(NULL, AV_LOG_DEBUG, "\nReceived windows signal %ld\n", fdwCtrlType);
 +
 +    switch (fdwCtrlType)
 +    {
 +    case CTRL_C_EVENT:
 +    case CTRL_BREAK_EVENT:
 +        sigterm_handler(SIGINT);
 +        return TRUE;
 +
 +    case CTRL_CLOSE_EVENT:
 +    case CTRL_LOGOFF_EVENT:
 +    case CTRL_SHUTDOWN_EVENT:
 +        sigterm_handler(SIGTERM);
 +        /* Basically, with these 3 events, when we return from this method the
 +           process is hard terminated, so stall as long as we need to
 +           to try and let the main thread(s) clean up and gracefully terminate
 +           (we have at most 5 seconds, but should be done far before that). */
 +        while (!ffmpeg_exited) {
 +            Sleep(0);
 +        }
 +        return TRUE;
 +
 +    default:
 +        av_log(NULL, AV_LOG_ERROR, "Received unknown windows signal %ld\n", fdwCtrlType);
 +        return FALSE;
 +    }
 +}
 +#endif
 +
 +void term_init(void)
 +{
 +#if HAVE_TERMIOS_H
 +    if(!run_as_daemon){
 +        struct termios tty;
 +        int istty = 1;
 +#if HAVE_ISATTY
 +        istty = isatty(0) && isatty(2);
 +#endif
 +        if (istty && tcgetattr (0, &tty) == 0) {
 +            oldtty = tty;
 +            restore_tty = 1;
 +
 +            tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
 +                             |INLCR|IGNCR|ICRNL|IXON);
 +            tty.c_oflag |= OPOST;
 +            tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
 +            tty.c_cflag &= ~(CSIZE|PARENB);
 +            tty.c_cflag |= CS8;
 +            tty.c_cc[VMIN] = 1;
 +            tty.c_cc[VTIME] = 0;
 +
 +            tcsetattr (0, TCSANOW, &tty);
 +        }
 +        signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
 +    }
 +#endif
 +
 +    signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
 +    signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
 +#ifdef SIGXCPU
 +    signal(SIGXCPU, sigterm_handler);
 +#endif
 +#if HAVE_SETCONSOLECTRLHANDLER
 +    SetConsoleCtrlHandler((PHANDLER_ROUTINE) CtrlHandler, TRUE);
 +#endif
 +}
 +
 +/* read a key without blocking */
 +static int read_key(void)
 +{
 +    unsigned char ch;
 +#if HAVE_TERMIOS_H
 +    int n = 1;
 +    struct timeval tv;
 +    fd_set rfds;
 +
 +    FD_ZERO(&rfds);
 +    FD_SET(0, &rfds);
 +    tv.tv_sec = 0;
 +    tv.tv_usec = 0;
 +    n = select(1, &rfds, NULL, NULL, &tv);
 +    if (n > 0) {
 +        n = read(0, &ch, 1);
 +        if (n == 1)
 +            return ch;
 +
 +        return n;
 +    }
 +#elif HAVE_KBHIT
 +#    if HAVE_PEEKNAMEDPIPE
 +    static int is_pipe;
 +    static HANDLE input_handle;
 +    DWORD dw, nchars;
 +    if(!input_handle){
 +        input_handle = GetStdHandle(STD_INPUT_HANDLE);
 +        is_pipe = !GetConsoleMode(input_handle, &dw);
 +    }
 +
 +    if (stdin->_cnt > 0) {
 +        read(0, &ch, 1);
 +        return ch;
 +    }
 +    if (is_pipe) {
 +        /* When running under a GUI, you will end here. */
 +        if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL)) {
 +            // input pipe may have been closed by the program that ran ffmpeg
 +            return -1;
 +        }
 +        //Read it
 +        if(nchars != 0) {
 +            read(0, &ch, 1);
 +            return ch;
 +        }else{
 +            return -1;
 +        }
 +    }
 +#    endif
 +    if(kbhit())
 +        return(getch());
 +#endif
 +    return -1;
 +}
 +
 +static int decode_interrupt_cb(void *ctx)
 +{
 +    return received_nb_signals > transcode_init_done;
 +}
 +
 +const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
 +
 +static void ffmpeg_cleanup(int ret)
 +{
 +    int i, j;
 +
 +    if (do_benchmark) {
 +        int maxrss = getmaxrss() / 1024;
 +        av_log(NULL, AV_LOG_INFO, "bench: maxrss=%ikB\n", maxrss);
 +    }
 +
 +    for (i = 0; i < nb_filtergraphs; i++) {
 +        FilterGraph *fg = filtergraphs[i];
 +        avfilter_graph_free(&fg->graph);
 +        for (j = 0; j < fg->nb_inputs; j++) {
 +            av_freep(&fg->inputs[j]->name);
 +            av_freep(&fg->inputs[j]);
 +        }
 +        av_freep(&fg->inputs);
 +        for (j = 0; j < fg->nb_outputs; j++) {
 +            av_freep(&fg->outputs[j]->name);
 +            av_freep(&fg->outputs[j]);
 +        }
 +        av_freep(&fg->outputs);
 +        av_freep(&fg->graph_desc);
 +
 +        av_freep(&filtergraphs[i]);
 +    }
 +    av_freep(&filtergraphs);
 +
 +    av_freep(&subtitle_out);
 +
 +    /* close files */
 +    for (i = 0; i < nb_output_files; i++) {
 +        OutputFile *of = output_files[i];
 +        AVFormatContext *s;
 +        if (!of)
 +            continue;
 +        s = of->ctx;
 +        if (s && s->oformat && !(s->oformat->flags & AVFMT_NOFILE))
 +            avio_closep(&s->pb);
 +        avformat_free_context(s);
 +        av_dict_free(&of->opts);
 +
 +        av_freep(&output_files[i]);
 +    }
 +    for (i = 0; i < nb_output_streams; i++) {
 +        OutputStream *ost = output_streams[i];
 +        AVBitStreamFilterContext *bsfc;
 +
 +        if (!ost)
 +            continue;
 +
 +        bsfc = ost->bitstream_filters;
 +        while (bsfc) {
 +            AVBitStreamFilterContext *next = bsfc->next;
 +            av_bitstream_filter_close(bsfc);
 +            bsfc = next;
 +        }
 +        ost->bitstream_filters = NULL;
 +        av_frame_free(&ost->filtered_frame);
 +        av_frame_free(&ost->last_frame);
 +
 +        av_parser_close(ost->parser);
 +
 +        av_freep(&ost->forced_keyframes);
 +        av_expr_free(ost->forced_keyframes_pexpr);
 +        av_freep(&ost->avfilter);
 +        av_freep(&ost->logfile_prefix);
 +
 +        av_freep(&ost->audio_channels_map);
 +        ost->audio_channels_mapped = 0;
 +
 +        avcodec_free_context(&ost->enc_ctx);
 +
 +        av_freep(&output_streams[i]);
 +    }
 +#if HAVE_PTHREADS
 +    free_input_threads();
 +#endif
 +    for (i = 0; i < nb_input_files; i++) {
 +        avformat_close_input(&input_files[i]->ctx);
 +        av_freep(&input_files[i]);
 +    }
 +    for (i = 0; i < nb_input_streams; i++) {
 +        InputStream *ist = input_streams[i];
 +
 +        av_frame_free(&ist->decoded_frame);
 +        av_frame_free(&ist->filter_frame);
 +        av_dict_free(&ist->decoder_opts);
 +        avsubtitle_free(&ist->prev_sub.subtitle);
 +        av_frame_free(&ist->sub2video.frame);
 +        av_freep(&ist->filters);
 +        av_freep(&ist->hwaccel_device);
 +
 +        avcodec_free_context(&ist->dec_ctx);
 +
 +        av_freep(&input_streams[i]);
 +    }
 +
 +    if (vstats_file)
 +        fclose(vstats_file);
 +    av_freep(&vstats_filename);
 +
 +    av_freep(&input_streams);
 +    av_freep(&input_files);
 +    av_freep(&output_streams);
 +    av_freep(&output_files);
 +
 +    uninit_opts();
 +
 +    avformat_network_deinit();
 +
 +    if (received_sigterm) {
 +        av_log(NULL, AV_LOG_INFO, "Exiting normally, received signal %d.\n",
 +               (int) received_sigterm);
 +    } else if (ret && transcode_init_done) {
 +        av_log(NULL, AV_LOG_INFO, "Conversion failed!\n");
 +    }
 +    term_exit();
 +    ffmpeg_exited = 1;
 +}
 +
 +void remove_avoptions(AVDictionary **a, AVDictionary *b)
 +{
 +    AVDictionaryEntry *t = NULL;
 +
 +    while ((t = av_dict_get(b, "", t, AV_DICT_IGNORE_SUFFIX))) {
 +        av_dict_set(a, t->key, NULL, AV_DICT_MATCH_CASE);
 +    }
 +}
 +
 +void assert_avoptions(AVDictionary *m)
 +{
 +    AVDictionaryEntry *t;
 +    if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
 +        av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
 +        exit_program(1);
 +    }
 +}
 +
 +static void abort_codec_experimental(AVCodec *c, int encoder)
 +{
 +    exit_program(1);
 +}
 +
 +static void update_benchmark(const char *fmt, ...)
 +{
 +    if (do_benchmark_all) {
 +        int64_t t = getutime();
 +        va_list va;
 +        char buf[1024];
 +
 +        if (fmt) {
 +            va_start(va, fmt);
 +            vsnprintf(buf, sizeof(buf), fmt, va);
 +            va_end(va);
 +            av_log(NULL, AV_LOG_INFO, "bench: %8"PRIu64" %s \n", t - current_time, buf);
 +        }
 +        current_time = t;
 +    }
 +}
 +
 +static void close_all_output_streams(OutputStream *ost, OSTFinished this_stream, OSTFinished others)
 +{
 +    int i;
 +    for (i = 0; i < nb_output_streams; i++) {
 +        OutputStream *ost2 = output_streams[i];
 +        ost2->finished |= ost == ost2 ? this_stream : others;
 +    }
 +}
 +
 +static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
 +{
 +    AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
 +    AVCodecContext          *avctx = ost->encoding_needed ? ost->enc_ctx : ost->st->codec;
 +    int ret;
 +
 +    if (!ost->st->codec->extradata_size && ost->enc_ctx->extradata_size) {
 +        ost->st->codec->extradata = av_mallocz(ost->enc_ctx->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
 +        if (ost->st->codec->extradata) {
 +            memcpy(ost->st->codec->extradata, ost->enc_ctx->extradata, ost->enc_ctx->extradata_size);
 +            ost->st->codec->extradata_size = ost->enc_ctx->extradata_size;
 +        }
 +    }
 +
 +    if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
 +        (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
 +        pkt->pts = pkt->dts = AV_NOPTS_VALUE;
 +
 +    /*
 +     * Audio encoders may split the packets --  #frames in != #packets out.
 +     * But there is no reordering, so we can limit the number of output packets
 +     * by simply dropping them here.
 +     * Counting encoded video frames needs to be done separately because of
 +     * reordering, see do_video_out()
 +     */
 +    if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
 +        if (ost->frame_number >= ost->max_frames) {
 +            av_free_packet(pkt);
 +            return;
 +        }
 +        ost->frame_number++;
 +    }
 +    if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
 +        uint8_t *sd = av_packet_get_side_data(pkt, AV_PKT_DATA_QUALITY_STATS,
 +                                              NULL);
 +        ost->quality = sd ? AV_RL32(sd) : -1;
 +    }
 +
 +    if (bsfc)
 +        av_packet_split_side_data(pkt);
 +
 +    while (bsfc) {
 +        AVPacket new_pkt = *pkt;
 +        AVDictionaryEntry *bsf_arg = av_dict_get(ost->bsf_args,
 +                                                 bsfc->filter->name,
 +                                                 NULL, 0);
 +        int a = av_bitstream_filter_filter(bsfc, avctx,
 +                                           bsf_arg ? bsf_arg->value : NULL,
 +                                           &new_pkt.data, &new_pkt.size,
 +                                           pkt->data, pkt->size,
 +                                           pkt->flags & AV_PKT_FLAG_KEY);
 +        if(a == 0 && new_pkt.data != pkt->data && new_pkt.destruct) {
 +            uint8_t *t = av_malloc(new_pkt.size + FF_INPUT_BUFFER_PADDING_SIZE); //the new should be a subset of the old so cannot overflow
 +            if(t) {
 +                memcpy(t, new_pkt.data, new_pkt.size);
 +                memset(t + new_pkt.size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
 +                new_pkt.data = t;
 +                new_pkt.buf = NULL;
 +                a = 1;
 +            } else
 +                a = AVERROR(ENOMEM);
 +        }
 +        if (a > 0) {
 +            pkt->side_data = NULL;
 +            pkt->side_data_elems = 0;
 +            av_free_packet(pkt);
 +            new_pkt.buf = av_buffer_create(new_pkt.data, new_pkt.size,
 +                                           av_buffer_default_free, NULL, 0);
 +            if (!new_pkt.buf)
 +                exit_program(1);
 +        } else if (a < 0) {
 +            new_pkt = *pkt;
 +            av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
 +                   bsfc->filter->name, pkt->stream_index,
 +                   avctx->codec ? avctx->codec->name : "copy");
 +            print_error("", a);
 +            if (exit_on_error)
 +                exit_program(1);
 +        }
 +        *pkt = new_pkt;
 +
 +        bsfc = bsfc->next;
 +    }
 +
 +    if (!(s->oformat->flags & AVFMT_NOTIMESTAMPS)) {
 +        if (pkt->dts != AV_NOPTS_VALUE &&
 +            pkt->pts != AV_NOPTS_VALUE &&
 +            pkt->dts > pkt->pts) {
 +            av_log(s, AV_LOG_WARNING, "Invalid DTS: %"PRId64" PTS: %"PRId64" in output stream %d:%d, replacing by guess\n",
 +                   pkt->dts, pkt->pts,
 +                   ost->file_index, ost->st->index);
 +            pkt->pts =
 +            pkt->dts = pkt->pts + pkt->dts + ost->last_mux_dts + 1
 +                     - FFMIN3(pkt->pts, pkt->dts, ost->last_mux_dts + 1)
 +                     - FFMAX3(pkt->pts, pkt->dts, ost->last_mux_dts + 1);
 +        }
 +     if(
 +        (avctx->codec_type == AVMEDIA_TYPE_AUDIO || avctx->codec_type == AVMEDIA_TYPE_VIDEO) &&
 +        pkt->dts != AV_NOPTS_VALUE &&
 +        ost->last_mux_dts != AV_NOPTS_VALUE) {
 +      int64_t max = ost->last_mux_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
 +      if (pkt->dts < max) {
 +        int loglevel = max - pkt->dts > 2 || avctx->codec_type == AVMEDIA_TYPE_VIDEO ? AV_LOG_WARNING : AV_LOG_DEBUG;
 +        av_log(s, loglevel, "Non-monotonous DTS in output stream "
 +               "%d:%d; previous: %"PRId64", current: %"PRId64"; ",
 +               ost->file_index, ost->st->index, ost->last_mux_dts, pkt->dts);
 +        if (exit_on_error) {
 +            av_log(NULL, AV_LOG_FATAL, "aborting.\n");
 +            exit_program(1);
 +        }
 +        av_log(s, loglevel, "changing to %"PRId64". This may result "
 +               "in incorrect timestamps in the output file.\n",
 +               max);
 +        if(pkt->pts >= pkt->dts)
 +            pkt->pts = FFMAX(pkt->pts, max);
 +        pkt->dts = max;
 +      }
 +     }
 +    }
 +    ost->last_mux_dts = pkt->dts;
 +
 +    ost->data_size += pkt->size;
 +    ost->packets_written++;
 +
 +    pkt->stream_index = ost->index;
 +
 +    if (debug_ts) {
 +        av_log(NULL, AV_LOG_INFO, "muxer <- type:%s "
 +                "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s size:%d\n",
 +                av_get_media_type_string(ost->enc_ctx->codec_type),
 +                av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, &ost->st->time_base),
 +                av_ts2str(pkt->dts), av_ts2timestr(pkt->dts, &ost->st->time_base),
 +                pkt->size
 +              );
 +    }
 +
 +    ret = av_interleaved_write_frame(s, pkt);
 +    if (ret < 0) {
 +        print_error("av_interleaved_write_frame()", ret);
 +        main_return_code = 1;
 +        close_all_output_streams(ost, MUXER_FINISHED | ENCODER_FINISHED, ENCODER_FINISHED);
 +    }
 +    av_free_packet(pkt);
 +}
 +
 +static void close_output_stream(OutputStream *ost)
 +{
 +    OutputFile *of = output_files[ost->file_index];
 +
 +    ost->finished |= ENCODER_FINISHED;
 +    if (of->shortest) {
 +        int64_t end = av_rescale_q(ost->sync_opts - ost->first_pts, ost->enc_ctx->time_base, AV_TIME_BASE_Q);
 +        of->recording_time = FFMIN(of->recording_time, end);
 +    }
 +}
 +
 +static int check_recording_time(OutputStream *ost)
 +{
 +    OutputFile *of = output_files[ost->file_index];
 +
 +    if (of->recording_time != INT64_MAX &&
 +        av_compare_ts(ost->sync_opts - ost->first_pts, ost->enc_ctx->time_base, of->recording_time,
 +                      AV_TIME_BASE_Q) >= 0) {
 +        close_output_stream(ost);
 +        return 0;
 +    }
 +    return 1;
 +}
 +
 +static void do_audio_out(AVFormatContext *s, OutputStream *ost,
 +                         AVFrame *frame)
 +{
 +    AVCodecContext *enc = ost->enc_ctx;
 +    AVPacket pkt;
 +    int got_packet = 0;
 +
 +    av_init_packet(&pkt);
 +    pkt.data = NULL;
 +    pkt.size = 0;
 +
 +    if (!check_recording_time(ost))
 +        return;
 +
 +    if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
 +        frame->pts = ost->sync_opts;
 +    ost->sync_opts = frame->pts + frame->nb_samples;
 +    ost->samples_encoded += frame->nb_samples;
 +    ost->frames_encoded++;
 +
 +    av_assert0(pkt.size || !pkt.data);
 +    update_benchmark(NULL);
 +    if (debug_ts) {
 +        av_log(NULL, AV_LOG_INFO, "encoder <- type:audio "
 +               "frame_pts:%s frame_pts_time:%s time_base:%d/%d\n",
 +               av_ts2str(frame->pts), av_ts2timestr(frame->pts, &enc->time_base),
 +               enc->time_base.num, enc->time_base.den);
 +    }
 +
 +    if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
 +        av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
 +        exit_program(1);
 +    }
 +    update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
 +
 +    if (got_packet) {
 +        av_packet_rescale_ts(&pkt, enc->time_base, ost->st->time_base);
 +
 +        if (debug_ts) {
 +            av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
 +                   "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
 +                   av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
 +                   av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
 +        }
 +
 +        write_frame(s, &pkt, ost);
 +    }
 +}
 +
 +static void do_subtitle_out(AVFormatContext *s,
 +                            OutputStream *ost,
 +                            InputStream *ist,
 +                            AVSubtitle *sub)
 +{
 +    int subtitle_out_max_size = 1024 * 1024;
 +    int subtitle_out_size, nb, i;
 +    AVCodecContext *enc;
 +    AVPacket pkt;
 +    int64_t pts;
 +
 +    if (sub->pts == AV_NOPTS_VALUE) {
 +        av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
 +        if (exit_on_error)
 +            exit_program(1);
 +        return;
 +    }
 +
 +    enc = ost->enc_ctx;
 +
 +    if (!subtitle_out) {
 +        subtitle_out = av_malloc(subtitle_out_max_size);
 +        if (!subtitle_out) {
 +            av_log(NULL, AV_LOG_FATAL, "Failed to allocate subtitle_out\n");
 +            exit_program(1);
 +        }
 +    }
 +
 +    /* Note: DVB subtitle need one packet to draw them and one other
 +       packet to clear them */
 +    /* XXX: signal it in the codec context ? */
 +    if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
 +        nb = 2;
 +    else
 +        nb = 1;
 +
 +    /* shift timestamp to honor -ss and make check_recording_time() work with -t */
 +    pts = sub->pts;
 +    if (output_files[ost->file_index]->start_time != AV_NOPTS_VALUE)
 +        pts -= output_files[ost->file_index]->start_time;
 +    for (i = 0; i < nb; i++) {
 +        unsigned save_num_rects = sub->num_rects;
 +
 +        ost->sync_opts = av_rescale_q(pts, AV_TIME_BASE_Q, enc->time_base);
 +        if (!check_recording_time(ost))
 +            return;
 +
 +        sub->pts = pts;
 +        // start_display_time is required to be 0
 +        sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
 +        sub->end_display_time  -= sub->start_display_time;
 +        sub->start_display_time = 0;
 +        if (i == 1)
 +            sub->num_rects = 0;
 +
 +        ost->frames_encoded++;
 +
 +        subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
 +                                                    subtitle_out_max_size, sub);
 +        if (i == 1)
 +            sub->num_rects = save_num_rects;
 +        if (subtitle_out_size < 0) {
 +            av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
 +            exit_program(1);
 +        }
 +
 +        av_init_packet(&pkt);
 +        pkt.data = subtitle_out;
 +        pkt.size = subtitle_out_size;
 +        pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
 +        pkt.duration = av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->st->time_base);
 +        if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
 +            /* XXX: the pts correction is handled here. Maybe handling
 +               it in the codec would be better */
 +            if (i == 0)
 +                pkt.pts += 90 * sub->start_display_time;
 +            else
 +                pkt.pts += 90 * sub->end_display_time;
 +        }
 +        pkt.dts = pkt.pts;
 +        write_frame(s, &pkt, ost);
 +    }
 +}
 +
 +static void do_video_out(AVFormatContext *s,
 +                         OutputStream *ost,
 +                         AVFrame *next_picture,
 +                         double sync_ipts)
 +{
 +    int ret, format_video_sync;
 +    AVPacket pkt;
 +    AVCodecContext *enc = ost->enc_ctx;
 +    AVCodecContext *mux_enc = ost->st->codec;
 +    int nb_frames, nb0_frames, i;
 +    double delta, delta0;
 +    double duration = 0;
 +    int frame_size = 0;
 +    InputStream *ist = NULL;
 +    AVFilterContext *filter = ost->filter->filter;
 +
 +    if (ost->source_index >= 0)
 +        ist = input_streams[ost->source_index];
 +
 +    if (filter->inputs[0]->frame_rate.num > 0 &&
 +        filter->inputs[0]->frame_rate.den > 0)
 +        duration = 1/(av_q2d(filter->inputs[0]->frame_rate) * av_q2d(enc->time_base));
 +
 +    if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
 +        duration = FFMIN(duration, 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base)));
 +
 +    if (!ost->filters_script &&
 +        !ost->filters &&
 +        next_picture &&
 +        ist &&
 +        lrintf(av_frame_get_pkt_duration(next_picture) * av_q2d(ist->st->time_base) / av_q2d(enc->time_base)) > 0) {
 +        duration = lrintf(av_frame_get_pkt_duration(next_picture) * av_q2d(ist->st->time_base) / av_q2d(enc->time_base));
 +    }
 +
 +    if (!next_picture) {
 +        //end, flushing
 +        nb0_frames = nb_frames = mid_pred(ost->last_nb0_frames[0],
 +                                          ost->last_nb0_frames[1],
 +                                          ost->last_nb0_frames[2]);
 +    } else {
 +        delta0 = sync_ipts - ost->sync_opts;
 +        delta  = delta0 + duration;
 +
 +        /* by default, we output a single frame */
 +        nb0_frames = 0;
 +        nb_frames = 1;
 +
 +        format_video_sync = video_sync_method;
 +        if (format_video_sync == VSYNC_AUTO) {
 +            if(!strcmp(s->oformat->name, "avi")) {
 +                format_video_sync = VSYNC_VFR;
 +            } else
 +                format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : VSYNC_CFR;
 +            if (   ist
 +                && format_video_sync == VSYNC_CFR
 +                && input_files[ist->file_index]->ctx->nb_streams == 1
 +                && input_files[ist->file_index]->input_ts_offset == 0) {
 +                format_video_sync = VSYNC_VSCFR;
 +            }
 +            if (format_video_sync == VSYNC_CFR && copy_ts) {
 +                format_video_sync = VSYNC_VSCFR;
 +            }
 +        }
 +
 +        if (delta0 < 0 &&
 +            delta > 0 &&
 +            format_video_sync != VSYNC_PASSTHROUGH &&
 +            format_video_sync != VSYNC_DROP) {
 +            double cor = FFMIN(-delta0, duration);
 +            if (delta0 < -0.6) {
 +                av_log(NULL, AV_LOG_WARNING, "Past duration %f too large\n", -delta0);
 +            } else
 +                av_log(NULL, AV_LOG_DEBUG, "Cliping frame in rate conversion by %f\n", -delta0);
 +            sync_ipts += cor;
 +            duration -= cor;
 +            delta0 += cor;
 +        }
 +
 +        switch (format_video_sync) {
 +        case VSYNC_VSCFR:
 +            if (ost->frame_number == 0 && delta - duration >= 0.5) {
 +                av_log(NULL, AV_LOG_DEBUG, "Not duplicating %d initial frames\n", (int)lrintf(delta - duration));
 +                delta = duration;
 +                delta0 = 0;
 +                ost->sync_opts = lrint(sync_ipts);
 +            }
 +        case VSYNC_CFR:
 +            // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
 +            if (frame_drop_threshold && delta < frame_drop_threshold && ost->frame_number) {
 +                nb_frames = 0;
 +            } else if (delta < -1.1)
 +                nb_frames = 0;
 +            else if (delta > 1.1) {
 +                nb_frames = lrintf(delta);
 +                if (delta0 > 1.1)
 +                    nb0_frames = lrintf(delta0 - 0.6);
 +            }
 +            break;
 +        case VSYNC_VFR:
 +            if (delta <= -0.6)
 +                nb_frames = 0;
 +            else if (delta > 0.6)
 +                ost->sync_opts = lrint(sync_ipts);
 +            break;
 +        case VSYNC_DROP:
 +        case VSYNC_PASSTHROUGH:
 +            ost->sync_opts = lrint(sync_ipts);
 +            break;
 +        default:
 +            av_assert0(0);
 +        }
 +    }
 +
 +    nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
 +    nb0_frames = FFMIN(nb0_frames, nb_frames);
 +
 +    memmove(ost->last_nb0_frames + 1,
 +            ost->last_nb0_frames,
 +            sizeof(ost->last_nb0_frames[0]) * (FF_ARRAY_ELEMS(ost->last_nb0_frames) - 1));
 +    ost->last_nb0_frames[0] = nb0_frames;
 +
 +    if (nb0_frames == 0 && ost->last_droped) {
 +        nb_frames_drop++;
 +        av_log(NULL, AV_LOG_VERBOSE,
 +               "*** dropping frame %d from stream %d at ts %"PRId64"\n",
 +               ost->frame_number, ost->st->index, ost->last_frame->pts);
 +    }
 +    if (nb_frames > (nb0_frames && ost->last_droped) + (nb_frames > nb0_frames)) {
 +        if (nb_frames > dts_error_threshold * 30) {
 +            av_log(NULL, AV_LOG_ERROR, "%d frame duplication too large, skipping\n", nb_frames - 1);
 +            nb_frames_drop++;
 +            return;
 +        }
 +        nb_frames_dup += nb_frames - (nb0_frames && ost->last_droped) - (nb_frames > nb0_frames);
 +        av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
 +    }
 +    ost->last_droped = nb_frames == nb0_frames && next_picture;
 +
 +  /* duplicates frame if needed */
 +  for (i = 0; i < nb_frames; i++) {
 +    AVFrame *in_picture;
 +    av_init_packet(&pkt);
 +    pkt.data = NULL;
 +    pkt.size = 0;
 +
 +    if (i < nb0_frames && ost->last_frame) {
 +        in_picture = ost->last_frame;
 +    } else
 +        in_picture = next_picture;
 +
 +    if (!in_picture)
 +        return;
 +
 +    in_picture->pts = ost->sync_opts;
 +
 +#if 1
 +    if (!check_recording_time(ost))
 +#else
 +    if (ost->frame_number >= ost->max_frames)
 +#endif
 +        return;
 +
 +    if (s->oformat->flags & AVFMT_RAWPICTURE &&
 +        enc->codec->id == AV_CODEC_ID_RAWVIDEO) {
 +        /* raw pictures are written as AVPicture structure to
 +           avoid any copies. We support temporarily the older
 +           method. */
 +        if (in_picture->interlaced_frame)
 +            mux_enc->field_order = in_picture->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
 +        else
 +            mux_enc->field_order = AV_FIELD_PROGRESSIVE;
 +        pkt.data   = (uint8_t *)in_picture;
 +        pkt.size   =  sizeof(AVPicture);
 +        pkt.pts    = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
 +        pkt.flags |= AV_PKT_FLAG_KEY;
 +
 +        write_frame(s, &pkt, ost);
 +    } else {
 +        int got_packet, forced_keyframe = 0;
 +        double pts_time;
 +
-         if (enc->coded_frame && (enc->flags&CODEC_FLAG_PSNR))
++        if (enc->flags & (AV_CODEC_FLAG_INTERLACED_DCT | AV_CODEC_FLAG_INTERLACED_ME) &&
 +            ost->top_field_first >= 0)
 +            in_picture->top_field_first = !!ost->top_field_first;
 +
 +        if (in_picture->interlaced_frame) {
 +            if (enc->codec->id == AV_CODEC_ID_MJPEG)
 +                mux_enc->field_order = in_picture->top_field_first ? AV_FIELD_TT:AV_FIELD_BB;
 +            else
 +                mux_enc->field_order = in_picture->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
 +        } else
 +            mux_enc->field_order = AV_FIELD_PROGRESSIVE;
 +
 +        in_picture->quality = enc->global_quality;
 +        in_picture->pict_type = 0;
 +
 +        pts_time = in_picture->pts != AV_NOPTS_VALUE ?
 +            in_picture->pts * av_q2d(enc->time_base) : NAN;
 +        if (ost->forced_kf_index < ost->forced_kf_count &&
 +            in_picture->pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
 +            ost->forced_kf_index++;
 +            forced_keyframe = 1;
 +        } else if (ost->forced_keyframes_pexpr) {
 +            double res;
 +            ost->forced_keyframes_expr_const_values[FKF_T] = pts_time;
 +            res = av_expr_eval(ost->forced_keyframes_pexpr,
 +                               ost->forced_keyframes_expr_const_values, NULL);
 +            av_dlog(NULL, "force_key_frame: n:%f n_forced:%f prev_forced_n:%f t:%f prev_forced_t:%f -> res:%f\n",
 +                    ost->forced_keyframes_expr_const_values[FKF_N],
 +                    ost->forced_keyframes_expr_const_values[FKF_N_FORCED],
 +                    ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N],
 +                    ost->forced_keyframes_expr_const_values[FKF_T],
 +                    ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T],
 +                    res);
 +            if (res) {
 +                forced_keyframe = 1;
 +                ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] =
 +                    ost->forced_keyframes_expr_const_values[FKF_N];
 +                ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] =
 +                    ost->forced_keyframes_expr_const_values[FKF_T];
 +                ost->forced_keyframes_expr_const_values[FKF_N_FORCED] += 1;
 +            }
 +
 +            ost->forced_keyframes_expr_const_values[FKF_N] += 1;
 +        } else if (   ost->forced_keyframes
 +                   && !strncmp(ost->forced_keyframes, "source", 6)
 +                   && in_picture->key_frame==1) {
 +            forced_keyframe = 1;
 +        }
 +
 +        if (forced_keyframe) {
 +            in_picture->pict_type = AV_PICTURE_TYPE_I;
 +            av_log(NULL, AV_LOG_DEBUG, "Forced keyframe at time %f\n", pts_time);
 +        }
 +
 +        update_benchmark(NULL);
 +        if (debug_ts) {
 +            av_log(NULL, AV_LOG_INFO, "encoder <- type:video "
 +                   "frame_pts:%s frame_pts_time:%s time_base:%d/%d\n",
 +                   av_ts2str(in_picture->pts), av_ts2timestr(in_picture->pts, &enc->time_base),
 +                   enc->time_base.num, enc->time_base.den);
 +        }
 +
 +        ost->frames_encoded++;
 +
 +        ret = avcodec_encode_video2(enc, &pkt, in_picture, &got_packet);
 +        update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
 +        if (ret < 0) {
 +            av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
 +            exit_program(1);
 +        }
 +
 +        if (got_packet) {
 +            if (debug_ts) {
 +                av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
 +                       "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
 +                       av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &enc->time_base),
 +                       av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &enc->time_base));
 +            }
 +
 +            if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
 +                pkt.pts = ost->sync_opts;
 +
 +            av_packet_rescale_ts(&pkt, enc->time_base, ost->st->time_base);
 +
 +            if (debug_ts) {
 +                av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
 +                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
 +                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
 +                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
 +            }
 +
 +            frame_size = pkt.size;
 +            write_frame(s, &pkt, ost);
 +
 +            /* if two pass, output log */
 +            if (ost->logfile && enc->stats_out) {
 +                fprintf(ost->logfile, "%s", enc->stats_out);
 +            }
 +        }
 +    }
 +    ost->sync_opts++;
 +    /*
 +     * For video, number of frames in == number of packets out.
 +     * But there may be reordering, so we can't throw away frames on encoder
 +     * flush, we need to limit them here, before they go into encoder.
 +     */
 +    ost->frame_number++;
 +
 +    if (vstats_filename && frame_size)
 +        do_video_stats(ost, frame_size);
 +  }
 +
 +    if (!ost->last_frame)
 +        ost->last_frame = av_frame_alloc();
 +    av_frame_unref(ost->last_frame);
 +    if (next_picture && ost->last_frame)
 +        av_frame_ref(ost->last_frame, next_picture);
 +    else
 +        av_frame_free(&ost->last_frame);
 +}
 +
 +static double psnr(double d)
 +{
 +    return -10.0 * log(d) / log(10.0);
 +}
 +
 +static void do_video_stats(OutputStream *ost, int frame_size)
 +{
 +    AVCodecContext *enc;
 +    int frame_number;
 +    double ti1, bitrate, avg_bitrate;
 +
 +    /* this is executed just the first time do_video_stats is called */
 +    if (!vstats_file) {
 +        vstats_file = fopen(vstats_filename, "w");
 +        if (!vstats_file) {
 +            perror("fopen");
 +            exit_program(1);
 +        }
 +    }
 +
 +    enc = ost->enc_ctx;
 +    if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
 +        frame_number = ost->st->nb_frames;
 +        fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number,
 +                ost->quality / (float)FF_QP2LAMBDA);
 +
-         if (   (ost->enc_ctx->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))
-             != CODEC_FLAG_PASS1)
++        if (enc->coded_frame && (enc->flags & AV_CODEC_FLAG_PSNR))
 +            fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
 +
 +        fprintf(vstats_file,"f_size= %6d ", frame_size);
 +        /* compute pts value */
 +        ti1 = av_stream_get_end_pts(ost->st) * av_q2d(ost->st->time_base);
 +        if (ti1 < 0.01)
 +            ti1 = 0.01;
 +
 +        bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
 +        avg_bitrate = (double)(ost->data_size * 8) / ti1 / 1000.0;
 +        fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
 +               (double)ost->data_size / 1024, ti1, bitrate, avg_bitrate);
 +        fprintf(vstats_file, "type= %c\n", enc->coded_frame ? av_get_picture_type_char(enc->coded_frame->pict_type) : 'I');
 +    }
 +}
 +
 +static void finish_output_stream(OutputStream *ost)
 +{
 +    OutputFile *of = output_files[ost->file_index];
 +    int i;
 +
 +    ost->finished = ENCODER_FINISHED | MUXER_FINISHED;
 +
 +    if (of->shortest) {
 +        for (i = 0; i < of->ctx->nb_streams; i++)
 +            output_streams[of->ost_index + i]->finished = ENCODER_FINISHED | MUXER_FINISHED;
 +    }
 +}
 +
 +/**
 + * Get and encode new output from any of the filtergraphs, without causing
 + * activity.
 + *
 + * @return  0 for success, <0 for severe errors
 + */
 +static int reap_filters(int flush)
 +{
 +    AVFrame *filtered_frame = NULL;
 +    int i;
 +
 +    /* Reap all buffers present in the buffer sinks */
 +    for (i = 0; i < nb_output_streams; i++) {
 +        OutputStream *ost = output_streams[i];
 +        OutputFile    *of = output_files[ost->file_index];
 +        AVFilterContext *filter;
 +        AVCodecContext *enc = ost->enc_ctx;
 +        int ret = 0;
 +
 +        if (!ost->filter)
 +            continue;
 +        filter = ost->filter->filter;
 +
 +        if (!ost->filtered_frame && !(ost->filtered_frame = av_frame_alloc())) {
 +            return AVERROR(ENOMEM);
 +        }
 +        filtered_frame = ost->filtered_frame;
 +
 +        while (1) {
 +            double float_pts = AV_NOPTS_VALUE; // this is identical to filtered_frame.pts but with higher precision
 +            ret = av_buffersink_get_frame_flags(filter, filtered_frame,
 +                                               AV_BUFFERSINK_FLAG_NO_REQUEST);
 +            if (ret < 0) {
 +                if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
 +                    av_log(NULL, AV_LOG_WARNING,
 +                           "Error in av_buffersink_get_frame_flags(): %s\n", av_err2str(ret));
 +                } else if (flush && ret == AVERROR_EOF) {
 +                    if (filter->inputs[0]->type == AVMEDIA_TYPE_VIDEO)
 +                        do_video_out(of->ctx, ost, NULL, AV_NOPTS_VALUE);
 +                }
 +                break;
 +            }
 +            if (ost->finished) {
 +                av_frame_unref(filtered_frame);
 +                continue;
 +            }
 +            if (filtered_frame->pts != AV_NOPTS_VALUE) {
 +                int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
 +                AVRational tb = enc->time_base;
 +                int extra_bits = av_clip(29 - av_log2(tb.den), 0, 16);
 +
 +                tb.den <<= extra_bits;
 +                float_pts =
 +                    av_rescale_q(filtered_frame->pts, filter->inputs[0]->time_base, tb) -
 +                    av_rescale_q(start_time, AV_TIME_BASE_Q, tb);
 +                float_pts /= 1 << extra_bits;
 +                // avoid exact midoints to reduce the chance of rounding differences, this can be removed in case the fps code is changed to work with integers
 +                float_pts += FFSIGN(float_pts) * 1.0 / (1<<17);
 +
 +                filtered_frame->pts =
 +                    av_rescale_q(filtered_frame->pts, filter->inputs[0]->time_base, enc->time_base) -
 +                    av_rescale_q(start_time, AV_TIME_BASE_Q, enc->time_base);
 +            }
 +            //if (ost->source_index >= 0)
 +            //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
 +
 +            switch (filter->inputs[0]->type) {
 +            case AVMEDIA_TYPE_VIDEO:
 +                if (!ost->frame_aspect_ratio.num)
 +                    enc->sample_aspect_ratio = filtered_frame->sample_aspect_ratio;
 +
 +                if (debug_ts) {
 +                    av_log(NULL, AV_LOG_INFO, "filter -> pts:%s pts_time:%s exact:%f time_base:%d/%d\n",
 +                            av_ts2str(filtered_frame->pts), av_ts2timestr(filtered_frame->pts, &enc->time_base),
 +                            float_pts,
 +                            enc->time_base.num, enc->time_base.den);
 +                }
 +
 +                do_video_out(of->ctx, ost, filtered_frame, float_pts);
 +                break;
 +            case AVMEDIA_TYPE_AUDIO:
 +                if (!(enc->codec->capabilities & CODEC_CAP_PARAM_CHANGE) &&
 +                    enc->channels != av_frame_get_channels(filtered_frame)) {
 +                    av_log(NULL, AV_LOG_ERROR,
 +                           "Audio filter graph output is not normalized and encoder does not support parameter changes\n");
 +                    break;
 +                }
 +                do_audio_out(of->ctx, ost, filtered_frame);
 +                break;
 +            default:
 +                // TODO support subtitle filters
 +                av_assert0(0);
 +            }
 +
 +            av_frame_unref(filtered_frame);
 +        }
 +    }
 +
 +    return 0;
 +}
 +
 +static void print_final_stats(int64_t total_size)
 +{
 +    uint64_t video_size = 0, audio_size = 0, extra_size = 0, other_size = 0;
 +    uint64_t subtitle_size = 0;
 +    uint64_t data_size = 0;
 +    float percent = -1.0;
 +    int i, j;
 +    int pass1_used = 1;
 +
 +    for (i = 0; i < nb_output_streams; i++) {
 +        OutputStream *ost = output_streams[i];
 +        switch (ost->enc_ctx->codec_type) {
 +            case AVMEDIA_TYPE_VIDEO: video_size += ost->data_size; break;
 +            case AVMEDIA_TYPE_AUDIO: audio_size += ost->data_size; break;
 +            case AVMEDIA_TYPE_SUBTITLE: subtitle_size += ost->data_size; break;
 +            default:                 other_size += ost->data_size; break;
 +        }
 +        extra_size += ost->enc_ctx->extradata_size;
 +        data_size  += ost->data_size;
-             if ((enc->flags&CODEC_FLAG_PSNR) && (enc->coded_frame || is_last_report)) {
++        if (   (ost->enc_ctx->flags & (AV_CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))
++            != AV_CODEC_FLAG_PASS1)
 +            pass1_used = 0;
 +    }
 +
 +    if (data_size && total_size>0 && total_size >= data_size)
 +        percent = 100.0 * (total_size - data_size) / data_size;
 +
 +    av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB subtitle:%1.0fkB other streams:%1.0fkB global headers:%1.0fkB muxing overhead: ",
 +           video_size / 1024.0,
 +           audio_size / 1024.0,
 +           subtitle_size / 1024.0,
 +           other_size / 1024.0,
 +           extra_size / 1024.0);
 +    if (percent >= 0.0)
 +        av_log(NULL, AV_LOG_INFO, "%f%%", percent);
 +    else
 +        av_log(NULL, AV_LOG_INFO, "unknown");
 +    av_log(NULL, AV_LOG_INFO, "\n");
 +
 +    /* print verbose per-stream stats */
 +    for (i = 0; i < nb_input_files; i++) {
 +        InputFile *f = input_files[i];
 +        uint64_t total_packets = 0, total_size = 0;
 +
 +        av_log(NULL, AV_LOG_VERBOSE, "Input file #%d (%s):\n",
 +               i, f->ctx->filename);
 +
 +        for (j = 0; j < f->nb_streams; j++) {
 +            InputStream *ist = input_streams[f->ist_index + j];
 +            enum AVMediaType type = ist->dec_ctx->codec_type;
 +
 +            total_size    += ist->data_size;
 +            total_packets += ist->nb_packets;
 +
 +            av_log(NULL, AV_LOG_VERBOSE, "  Input stream #%d:%d (%s): ",
 +                   i, j, media_type_string(type));
 +            av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" packets read (%"PRIu64" bytes); ",
 +                   ist->nb_packets, ist->data_size);
 +
 +            if (ist->decoding_needed) {
 +                av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" frames decoded",
 +                       ist->frames_decoded);
 +                if (type == AVMEDIA_TYPE_AUDIO)
 +                    av_log(NULL, AV_LOG_VERBOSE, " (%"PRIu64" samples)", ist->samples_decoded);
 +                av_log(NULL, AV_LOG_VERBOSE, "; ");
 +            }
 +
 +            av_log(NULL, AV_LOG_VERBOSE, "\n");
 +        }
 +
 +        av_log(NULL, AV_LOG_VERBOSE, "  Total: %"PRIu64" packets (%"PRIu64" bytes) demuxed\n",
 +               total_packets, total_size);
 +    }
 +
 +    for (i = 0; i < nb_output_files; i++) {
 +        OutputFile *of = output_files[i];
 +        uint64_t total_packets = 0, total_size = 0;
 +
 +        av_log(NULL, AV_LOG_VERBOSE, "Output file #%d (%s):\n",
 +               i, of->ctx->filename);
 +
 +        for (j = 0; j < of->ctx->nb_streams; j++) {
 +            OutputStream *ost = output_streams[of->ost_index + j];
 +            enum AVMediaType type = ost->enc_ctx->codec_type;
 +
 +            total_size    += ost->data_size;
 +            total_packets += ost->packets_written;
 +
 +            av_log(NULL, AV_LOG_VERBOSE, "  Output stream #%d:%d (%s): ",
 +                   i, j, media_type_string(type));
 +            if (ost->encoding_needed) {
 +                av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" frames encoded",
 +                       ost->frames_encoded);
 +                if (type == AVMEDIA_TYPE_AUDIO)
 +                    av_log(NULL, AV_LOG_VERBOSE, " (%"PRIu64" samples)", ost->samples_encoded);
 +                av_log(NULL, AV_LOG_VERBOSE, "; ");
 +            }
 +
 +            av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" packets muxed (%"PRIu64" bytes); ",
 +                   ost->packets_written, ost->data_size);
 +
 +            av_log(NULL, AV_LOG_VERBOSE, "\n");
 +        }
 +
 +        av_log(NULL, AV_LOG_VERBOSE, "  Total: %"PRIu64" packets (%"PRIu64" bytes) muxed\n",
 +               total_packets, total_size);
 +    }
 +    if(video_size + data_size + audio_size + subtitle_size + extra_size == 0){
 +        av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded ");
 +        if (pass1_used) {
 +            av_log(NULL, AV_LOG_WARNING, "\n");
 +        } else {
 +            av_log(NULL, AV_LOG_WARNING, "(check -ss / -t / -frames parameters if used)\n");
 +        }
 +    }
 +}
 +
 +static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
 +{
 +    char buf[1024];
 +    AVBPrint buf_script;
 +    OutputStream *ost;
 +    AVFormatContext *oc;
 +    int64_t total_size;
 +    AVCodecContext *enc;
 +    int frame_number, vid, i;
 +    double bitrate;
 +    int64_t pts = INT64_MIN;
 +    static int64_t last_time = -1;
 +    static int qp_histogram[52];
 +    int hours, mins, secs, us;
 +
 +    if (!print_stats && !is_last_report && !progress_avio)
 +        return;
 +
 +    if (!is_last_report) {
 +        if (last_time == -1) {
 +            last_time = cur_time;
 +            return;
 +        }
 +        if ((cur_time - last_time) < 500000)
 +            return;
 +        last_time = cur_time;
 +    }
 +
 +
 +    oc = output_files[0]->ctx;
 +
 +    total_size = avio_size(oc->pb);
 +    if (total_size <= 0) // FIXME improve avio_size() so it works with non seekable output too
 +        total_size = avio_tell(oc->pb);
 +
 +    buf[0] = '\0';
 +    vid = 0;
 +    av_bprint_init(&buf_script, 0, 1);
 +    for (i = 0; i < nb_output_streams; i++) {
 +        float q = -1;
 +        ost = output_streams[i];
 +        enc = ost->enc_ctx;
 +        if (!ost->stream_copy)
 +            q = ost->quality / (float) FF_QP2LAMBDA;
 +
 +        if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
 +            snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
 +            av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
 +                       ost->file_index, ost->index, q);
 +        }
 +        if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
 +            float fps, t = (cur_time-timer_start) / 1000000.0;
 +
 +            frame_number = ost->frame_number;
 +            fps = t > 1 ? frame_number / t : 0;
 +            snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
 +                     frame_number, fps < 9.95, fps, q);
 +            av_bprintf(&buf_script, "frame=%d\n", frame_number);
 +            av_bprintf(&buf_script, "fps=%.1f\n", fps);
 +            av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
 +                       ost->file_index, ost->index, q);
 +            if (is_last_report)
 +                snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
 +            if (qp_hist) {
 +                int j;
 +                int qp = lrintf(q);
 +                if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
 +                    qp_histogram[qp]++;
 +                for (j = 0; j < 32; j++)
 +                    snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));
 +            }
 +
-     if (!(format_flags & AVFMT_FLAG_BITEXACT) && !(codec_flags & CODEC_FLAG_BITEXACT))
++            if ((enc->flags & AV_CODEC_FLAG_PSNR) && (enc->coded_frame || is_last_report)) {
 +                int j;
 +                double error, error_sum = 0;
 +                double scale, scale_sum = 0;
 +                double p;
 +                char type[3] = { 'Y','U','V' };
 +                snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
 +                for (j = 0; j < 3; j++) {
 +                    if (is_last_report) {
 +                        error = enc->error[j];
 +                        scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
 +                    } else {
 +                        error = enc->coded_frame->error[j];
 +                        scale = enc->width * enc->height * 255.0 * 255.0;
 +                    }
 +                    if (j)
 +                        scale /= 4;
 +                    error_sum += error;
 +                    scale_sum += scale;
 +                    p = psnr(error / scale);
 +                    snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], p);
 +                    av_bprintf(&buf_script, "stream_%d_%d_psnr_%c=%2.2f\n",
 +                               ost->file_index, ost->index, type[j] | 32, p);
 +                }
 +                p = psnr(error_sum / scale_sum);
 +                snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
 +                av_bprintf(&buf_script, "stream_%d_%d_psnr_all=%2.2f\n",
 +                           ost->file_index, ost->index, p);
 +            }
 +            vid = 1;
 +        }
 +        /* compute min output value */
 +        if (av_stream_get_end_pts(ost->st) != AV_NOPTS_VALUE)
 +            pts = FFMAX(pts, av_rescale_q(av_stream_get_end_pts(ost->st),
 +                                          ost->st->time_base, AV_TIME_BASE_Q));
 +        if (is_last_report)
 +            nb_frames_drop += ost->last_droped;
 +    }
 +
 +    secs = FFABS(pts) / AV_TIME_BASE;
 +    us = FFABS(pts) % AV_TIME_BASE;
 +    mins = secs / 60;
 +    secs %= 60;
 +    hours = mins / 60;
 +    mins %= 60;
 +
 +    bitrate = pts && total_size >= 0 ? total_size * 8 / (pts / 1000.0) : -1;
 +
 +    if (total_size < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
 +                                 "size=N/A time=");
 +    else                snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
 +                                 "size=%8.0fkB time=", total_size / 1024.0);
 +    if (pts < 0)
 +        snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "-");
 +    snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
 +             "%02d:%02d:%02d.%02d ", hours, mins, secs,
 +             (100 * us) / AV_TIME_BASE);
 +
 +    if (bitrate < 0) {
 +        snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),"bitrate=N/A");
 +        av_bprintf(&buf_script, "bitrate=N/A\n");
 +    }else{
 +        snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),"bitrate=%6.1fkbits/s", bitrate);
 +        av_bprintf(&buf_script, "bitrate=%6.1fkbits/s\n", bitrate);
 +    }
 +
 +    if (total_size < 0) av_bprintf(&buf_script, "total_size=N/A\n");
 +    else                av_bprintf(&buf_script, "total_size=%"PRId64"\n", total_size);
 +    av_bprintf(&buf_script, "out_time_ms=%"PRId64"\n", pts);
 +    av_bprintf(&buf_script, "out_time=%02d:%02d:%02d.%06d\n",
 +               hours, mins, secs, us);
 +
 +    if (nb_frames_dup || nb_frames_drop)
 +        snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
 +                nb_frames_dup, nb_frames_drop);
 +    av_bprintf(&buf_script, "dup_frames=%d\n", nb_frames_dup);
 +    av_bprintf(&buf_script, "drop_frames=%d\n", nb_frames_drop);
 +
 +    if (print_stats || is_last_report) {
 +        const char end = is_last_report ? '\n' : '\r';
 +        if (print_stats==1 && AV_LOG_INFO > av_log_get_level()) {
 +            fprintf(stderr, "%s    %c", buf, end);
 +        } else
 +            av_log(NULL, AV_LOG_INFO, "%s    %c", buf, end);
 +
 +    fflush(stderr);
 +    }
 +
 +    if (progress_avio) {
 +        av_bprintf(&buf_script, "progress=%s\n",
 +                   is_last_report ? "end" : "continue");
 +        avio_write(progress_avio, buf_script.str,
 +                   FFMIN(buf_script.len, buf_script.size - 1));
 +        avio_flush(progress_avio);
 +        av_bprint_finalize(&buf_script, NULL);
 +        if (is_last_report) {
 +            avio_closep(&progress_avio);
 +        }
 +    }
 +
 +    if (is_last_report)
 +        print_final_stats(total_size);
 +}
 +
 +static void flush_encoders(void)
 +{
 +    int i, ret;
 +
 +    for (i = 0; i < nb_output_streams; i++) {
 +        OutputStream   *ost = output_streams[i];
 +        AVCodecContext *enc = ost->enc_ctx;
 +        AVFormatContext *os = output_files[ost->file_index]->ctx;
 +        int stop_encoding = 0;
 +
 +        if (!ost->encoding_needed)
 +            continue;
 +
 +        if (enc->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
 +            continue;
 +        if (enc->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == AV_CODEC_ID_RAWVIDEO)
 +            continue;
 +
 +        for (;;) {
 +            int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
 +            const char *desc;
 +
 +            switch (enc->codec_type) {
 +            case AVMEDIA_TYPE_AUDIO:
 +                encode = avcodec_encode_audio2;
 +                desc   = "Audio";
 +                break;
 +            case AVMEDIA_TYPE_VIDEO:
 +                encode = avcodec_encode_video2;
 +                desc   = "Video";
 +                break;
 +            default:
 +                stop_encoding = 1;
 +            }
 +
 +            if (encode) {
 +                AVPacket pkt;
 +                int pkt_size;
 +                int got_packet;
 +                av_init_packet(&pkt);
 +                pkt.data = NULL;
 +                pkt.size = 0;
 +
 +                update_benchmark(NULL);
 +                ret = encode(enc, &pkt, NULL, &got_packet);
 +                update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
 +                if (ret < 0) {
 +                    av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
 +                    exit_program(1);
 +                }
 +                if (ost->logfile && enc->stats_out) {
 +                    fprintf(ost->logfile, "%s", enc->stats_out);
 +                }
 +                if (!got_packet) {
 +                    stop_encoding = 1;
 +                    break;
 +                }
 +                if (ost->finished & MUXER_FINISHED) {
 +                    av_free_packet(&pkt);
 +                    continue;
 +                }
 +                av_packet_rescale_ts(&pkt, enc->time_base, ost->st->time_base);
 +                pkt_size = pkt.size;
 +                write_frame(os, &pkt, ost);
 +                if (ost->enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO && vstats_filename) {
 +                    do_video_stats(ost, pkt_size);
 +                }
 +            }
 +
 +            if (stop_encoding)
 +                break;
 +        }
 +    }
 +}
 +
 +/*
 + * Check whether a packet from ist should be written into ost at this time
 + */
 +static int check_output_constraints(InputStream *ist, OutputStream *ost)
 +{
 +    OutputFile *of = output_files[ost->file_index];
 +    int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
 +
 +    if (ost->source_index != ist_index)
 +        return 0;
 +
 +    if (ost->finished)
 +        return 0;
 +
 +    if (of->start_time != AV_NOPTS_VALUE && ist->pts < of->start_time)
 +        return 0;
 +
 +    return 1;
 +}
 +
 +static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
 +{
 +    OutputFile *of = output_files[ost->file_index];
 +    InputFile   *f = input_files [ist->file_index];
 +    int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
 +    int64_t ost_tb_start_time = av_rescale_q(start_time, AV_TIME_BASE_Q, ost->st->time_base);
 +    int64_t ist_tb_start_time = av_rescale_q(start_time, AV_TIME_BASE_Q, ist->st->time_base);
 +    AVPicture pict;
 +    AVPacket opkt;
 +
 +    av_init_packet(&opkt);
 +
 +    if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
 +        !ost->copy_initial_nonkeyframes)
 +        return;
 +
 +    if (pkt->pts == AV_NOPTS_VALUE) {
 +        if (!ost->frame_number && ist->pts < start_time &&
 +            !ost->copy_prior_start)
 +            return;
 +    } else {
 +        if (!ost->frame_number && pkt->pts < ist_tb_start_time &&
 +            !ost->copy_prior_start)
 +            return;
 +    }
 +
 +    if (of->recording_time != INT64_MAX &&
 +        ist->pts >= of->recording_time + start_time) {
 +        close_output_stream(ost);
 +        return;
 +    }
 +
 +    if (f->recording_time != INT64_MAX) {
 +        start_time = f->ctx->start_time;
 +        if (f->start_time != AV_NOPTS_VALUE)
 +            start_time += f->start_time;
 +        if (ist->pts >= f->recording_time + start_time) {
 +            close_output_stream(ost);
 +            return;
 +        }
 +    }
 +
 +    /* force the input stream PTS */
 +    if (ost->enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO)
 +        ost->sync_opts++;
 +
 +    if (pkt->pts != AV_NOPTS_VALUE)
 +        opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
 +    else
 +        opkt.pts = AV_NOPTS_VALUE;
 +
 +    if (pkt->dts == AV_NOPTS_VALUE)
 +        opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
 +    else
 +        opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
 +    opkt.dts -= ost_tb_start_time;
 +
 +    if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && pkt->dts != AV_NOPTS_VALUE) {
 +        int duration = av_get_audio_frame_duration(ist->dec_ctx, pkt->size);
 +        if(!duration)
 +            duration = ist->dec_ctx->frame_size;
 +        opkt.dts = opkt.pts = av_rescale_delta(ist->st->time_base, pkt->dts,
 +                                               (AVRational){1, ist->dec_ctx->sample_rate}, duration, &ist->filter_in_rescale_delta_last,
 +                                               ost->st->time_base) - ost_tb_start_time;
 +    }
 +
 +    opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
 +    opkt.flags    = pkt->flags;
 +
 +    // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
 +    if (  ost->enc_ctx->codec_id != AV_CODEC_ID_H264
 +       && ost->enc_ctx->codec_id != AV_CODEC_ID_MPEG1VIDEO
 +       && ost->enc_ctx->codec_id != AV_CODEC_ID_MPEG2VIDEO
 +       && ost->enc_ctx->codec_id != AV_CODEC_ID_VC1
 +       ) {
 +        if (av_parser_change(ost->parser, ost->st->codec,
 +                             &opkt.data, &opkt.size,
 +                             pkt->data, pkt->size,
 +                             pkt->flags & AV_PKT_FLAG_KEY)) {
 +            opkt.buf = av_buffer_create(opkt.data, opkt.size, av_buffer_default_free, NULL, 0);
 +            if (!opkt.buf)
 +                exit_program(1);
 +        }
 +    } else {
 +        opkt.data = pkt->data;
 +        opkt.size = pkt->size;
 +    }
 +    av_copy_packet_side_data(&opkt, pkt);
 +
 +    if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (of->ctx->oformat->flags & AVFMT_RAWPICTURE)) {
 +        /* store AVPicture in AVPacket, as expected by the output format */
 +        avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
 +        opkt.data = (uint8_t *)&pict;
 +        opkt.size = sizeof(AVPicture);
 +        opkt.flags |= AV_PKT_FLAG_KEY;
 +    }
 +
 +    write_frame(of->ctx, &opkt, ost);
 +}
 +
 +int guess_input_channel_layout(InputStream *ist)
 +{
 +    AVCodecContext *dec = ist->dec_ctx;
 +
 +    if (!dec->channel_layout) {
 +        char layout_name[256];
 +
 +        if (dec->channels > ist->guess_layout_max)
 +            return 0;
 +        dec->channel_layout = av_get_default_channel_layout(dec->channels);
 +        if (!dec->channel_layout)
 +            return 0;
 +        av_get_channel_layout_string(layout_name, sizeof(layout_name),
 +                                     dec->channels, dec->channel_layout);
 +        av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
 +               "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
 +    }
 +    return 1;
 +}
 +
 +static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
 +{
 +    AVFrame *decoded_frame, *f;
 +    AVCodecContext *avctx = ist->dec_ctx;
 +    int i, ret, err = 0, resample_changed;
 +    AVRational decoded_frame_tb;
 +
 +    if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
 +        return AVERROR(ENOMEM);
 +    if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
 +        return AVERROR(ENOMEM);
 +    decoded_frame = ist->decoded_frame;
 +
 +    update_benchmark(NULL);
 +    ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
 +    update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
 +
 +    if (ret >= 0 && avctx->sample_rate <= 0) {
 +        av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
 +        ret = AVERROR_INVALIDDATA;
 +    }
 +
 +    if (*got_output || ret<0)
 +        decode_error_stat[ret<0] ++;
 +
 +    if (ret < 0 && exit_on_error)
 +        exit_program(1);
 +
 +    if (!*got_output || ret < 0)
 +        return ret;
 +
 +    ist->samples_decoded += decoded_frame->nb_samples;
 +    ist->frames_decoded++;
 +
 +#if 1
 +    /* increment next_dts to use for the case where the input stream does not
 +       have timestamps or there are multiple frames in the packet */
 +    ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
 +                     avctx->sample_rate;
 +    ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
 +                     avctx->sample_rate;
 +#endif
 +
 +    resample_changed = ist->resample_sample_fmt     != decoded_frame->format         ||
 +                       ist->resample_channels       != avctx->channels               ||
 +                       ist->resample_channel_layout != decoded_frame->channel_layout ||
 +                       ist->resample_sample_rate    != decoded_frame->sample_rate;
 +    if (resample_changed) {
 +        char layout1[64], layout2[64];
 +
 +        if (!guess_input_channel_layout(ist)) {
 +            av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
 +                   "layout for Input Stream #%d.%d\n", ist->file_index,
 +                   ist->st->index);
 +            exit_program(1);
 +        }
 +        decoded_frame->channel_layout = avctx->channel_layout;
 +
 +        av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
 +                                     ist->resample_channel_layout);
 +        av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
 +                                     decoded_frame->channel_layout);
 +
 +        av_log(NULL, AV_LOG_INFO,
 +               "Input stream #%d:%d frame changed from rate:%d fmt:%s ch:%d chl:%s to rate:%d fmt:%s ch:%d chl:%s\n",
 +               ist->file_index, ist->st->index,
 +               ist->resample_sample_rate,  av_get_sample_fmt_name(ist->resample_sample_fmt),
 +               ist->resample_channels, layout1,
 +               decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
 +               avctx->channels, layout2);
 +
 +        ist->resample_sample_fmt     = decoded_frame->format;
 +        ist->resample_sample_rate    = decoded_frame->sample_rate;
 +        ist->resample_channel_layout = decoded_frame->channel_layout;
 +        ist->resample_channels       = avctx->channels;
 +
 +        for (i = 0; i < nb_filtergraphs; i++)
 +            if (ist_in_filtergraph(filtergraphs[i], ist)) {
 +                FilterGraph *fg = filtergraphs[i];
 +                if (configure_filtergraph(fg) < 0) {
 +                    av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
 +                    exit_program(1);
 +                }
 +            }
 +    }
 +
 +    /* if the decoder provides a pts, use it instead of the last packet pts.
 +       the decoder could be delaying output by a packet or more. */
 +    if (decoded_frame->pts != AV_NOPTS_VALUE) {
 +        ist->dts = ist->next_dts = ist->pts = ist->next_pts = av_rescale_q(decoded_frame->pts, avctx->time_base, AV_TIME_BASE_Q);
 +        decoded_frame_tb   = avctx->time_base;
 +    } else if (decoded_frame->pkt_pts != AV_NOPTS_VALUE) {
 +        decoded_frame->pts = decoded_frame->pkt_pts;
 +        decoded_frame_tb   = ist->st->time_base;
 +    } else if (pkt->pts != AV_NOPTS_VALUE) {
 +        decoded_frame->pts = pkt->pts;
 +        decoded_frame_tb   = ist->st->time_base;
 +    }else {
 +        decoded_frame->pts = ist->dts;
 +        decoded_frame_tb   = AV_TIME_BASE_Q;
 +    }
 +    pkt->pts           = AV_NOPTS_VALUE;
 +    if (decoded_frame->pts != AV_NOPTS_VALUE)
 +        decoded_frame->pts = av_rescale_delta(decoded_frame_tb, decoded_frame->pts,
 +                                              (AVRational){1, avctx->sample_rate}, decoded_frame->nb_samples, &ist->filter_in_rescale_delta_last,
 +                                              (AVRational){1, avctx->sample_rate});
 +    for (i = 0; i < ist->nb_filters; i++) {
 +        if (i < ist->nb_filters - 1) {
 +            f = ist->filter_frame;
 +            err = av_frame_ref(f, decoded_frame);
 +            if (err < 0)
 +                break;
 +        } else
 +            f = decoded_frame;
 +        err = av_buffersrc_add_frame_flags(ist->filters[i]->filter, f,
 +                                     AV_BUFFERSRC_FLAG_PUSH);
 +        if (err == AVERROR_EOF)
 +            err = 0; /* ignore */
 +        if (err < 0)
 +            break;
 +    }
 +    decoded_frame->pts = AV_NOPTS_VALUE;
 +
 +    av_frame_unref(ist->filter_frame);
 +    av_frame_unref(decoded_frame);
 +    return err < 0 ? err : ret;
 +}
 +
 +static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
 +{
 +    AVFrame *decoded_frame, *f;
 +    int i, ret = 0, err = 0, resample_changed;
 +    int64_t best_effort_timestamp;
 +    AVRational *frame_sample_aspect;
 +
 +    if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
 +        return AVERROR(ENOMEM);
 +    if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
 +        return AVERROR(ENOMEM);
 +    decoded_frame = ist->decoded_frame;
 +    pkt->dts  = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
 +
 +    update_benchmark(NULL);
 +    ret = avcodec_decode_video2(ist->dec_ctx,
 +                                decoded_frame, got_output, pkt);
 +    update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
 +
 +    // The following line may be required in some cases where there is no parser
 +    // or the parser does not has_b_frames correctly
 +    if (ist->st->codec->has_b_frames < ist->dec_ctx->has_b_frames) {
 +        if (ist->dec_ctx->codec_id == AV_CODEC_ID_H264) {
 +            ist->st->codec->has_b_frames = ist->dec_ctx->has_b_frames;
 +        } else
 +            av_log_ask_for_sample(
 +                ist->dec_ctx,
 +                "has_b_frames is larger in decoder than demuxer %d > %d ",
 +                ist->dec_ctx->has_b_frames,
 +                ist->st->codec->has_b_frames
 +            );
 +    }
 +
 +    if (*got_output || ret<0)
 +        decode_error_stat[ret<0] ++;
 +
 +    if (ret < 0 && exit_on_error)
 +        exit_program(1);
 +
 +    if (*got_output && ret >= 0) {
 +        if (ist->dec_ctx->width  != decoded_frame->width ||
 +            ist->dec_ctx->height != decoded_frame->height ||
 +            ist->dec_ctx->pix_fmt != decoded_frame->format) {
 +            av_log(NULL, AV_LOG_DEBUG, "Frame parameters mismatch context %d,%d,%d != %d,%d,%d\n",
 +                decoded_frame->width,
 +                decoded_frame->height,
 +                decoded_frame->format,
 +                ist->dec_ctx->width,
 +                ist->dec_ctx->height,
 +                ist->dec_ctx->pix_fmt);
 +        }
 +    }
 +
 +    if (!*got_output || ret < 0)
 +        return ret;
 +
 +    if(ist->top_field_first>=0)
 +        decoded_frame->top_field_first = ist->top_field_first;
 +
 +    ist->frames_decoded++;
 +
 +    if (ist->hwaccel_retrieve_data && decoded_frame->format == ist->hwaccel_pix_fmt) {
 +        err = ist->hwaccel_retrieve_data(ist->dec_ctx, decoded_frame);
 +        if (err < 0)
 +            goto fail;
 +    }
 +    ist->hwaccel_retrieved_pix_fmt = decoded_frame->format;
 +
 +    best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
 +    if(best_effort_timestamp != AV_NOPTS_VALUE)
 +        ist->next_pts = ist->pts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
 +
 +    if (debug_ts) {
 +        av_log(NULL, AV_LOG_INFO, "decoder -> ist_index:%d type:video "
 +               "frame_pts:%s frame_pts_time:%s best_effort_ts:%"PRId64" best_effort_ts_time:%s keyframe:%d frame_type:%d time_base:%d/%d\n",
 +               ist->st->index, av_ts2str(decoded_frame->pts),
 +               av_ts2timestr(decoded_frame->pts, &ist->st->time_base),
 +               best_effort_timestamp,
 +               av_ts2timestr(best_effort_timestamp, &ist->st->time_base),
 +               decoded_frame->key_frame, decoded_frame->pict_type,
 +               ist->st->time_base.num, ist->st->time_base.den);
 +    }
 +
 +    pkt->size = 0;
 +
 +    if (ist->st->sample_aspect_ratio.num)
 +        decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
 +
 +    resample_changed = ist->resample_width   != decoded_frame->width  ||
 +                       ist->resample_height  != decoded_frame->height ||
 +                       ist->resample_pix_fmt != decoded_frame->format;
 +    if (resample_changed) {
 +        av_log(NULL, AV_LOG_INFO,
 +               "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
 +               ist->file_index, ist->st->index,
 +               ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
 +               decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
 +
 +        ist->resample_width   = decoded_frame->width;
 +        ist->resample_height  = decoded_frame->height;
 +        ist->resample_pix_fmt = decoded_frame->format;
 +
 +        for (i = 0; i < nb_filtergraphs; i++) {
 +            if (ist_in_filtergraph(filtergraphs[i], ist) && ist->reinit_filters &&
 +                configure_filtergraph(filtergraphs[i]) < 0) {
 +                av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
 +                exit_program(1);
 +            }
 +        }
 +    }
 +
 +    frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
 +    for (i = 0; i < ist->nb_filters; i++) {
 +        if (!frame_sample_aspect->num)
 +            *frame_sample_aspect = ist->st->sample_aspect_ratio;
 +
 +        if (i < ist->nb_filters - 1) {
 +            f = ist->filter_frame;
 +            err = av_frame_ref(f, decoded_frame);
 +            if (err < 0)
 +                break;
 +        } else
 +            f = decoded_frame;
 +        ret = av_buffersrc_add_frame_flags(ist->filters[i]->filter, f, AV_BUFFERSRC_FLAG_PUSH);
 +        if (ret == AVERROR_EOF) {
 +            ret = 0; /* ignore */
 +        } else if (ret < 0) {
 +            av_log(NULL, AV_LOG_FATAL,
 +                   "Failed to inject frame into filter network: %s\n", av_err2str(ret));
 +            exit_program(1);
 +        }
 +    }
 +
 +fail:
 +    av_frame_unref(ist->filter_frame);
 +    av_frame_unref(decoded_frame);
 +    return err < 0 ? err : ret;
 +}
 +
 +static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
 +{
 +    AVSubtitle subtitle;
 +    int i, ret = avcodec_decode_subtitle2(ist->dec_ctx,
 +                                          &subtitle, got_output, pkt);
 +
 +    if (*got_output || ret<0)
 +        decode_error_stat[ret<0] ++;
 +
 +    if (ret < 0 && exit_on_error)
 +        exit_program(1);
 +
 +    if (ret < 0 || !*got_output) {
 +        if (!pkt->size)
 +            sub2video_flush(ist);
 +        return ret;
 +    }
 +
 +    if (ist->fix_sub_duration) {
 +        int end = 1;
 +        if (ist->prev_sub.got_output) {
 +            end = av_rescale(subtitle.pts - ist->prev_sub.subtitle.pts,
 +                             1000, AV_TIME_BASE);
 +            if (end < ist->prev_sub.subtitle.end_display_time) {
 +                av_log(ist->dec_ctx, AV_LOG_DEBUG,
 +                       "Subtitle duration reduced from %d to %d%s\n",
 +                       ist->prev_sub.subtitle.end_display_time, end,
 +                       end <= 0 ? ", dropping it" : "");
 +                ist->prev_sub.subtitle.end_display_time = end;
 +            }
 +        }
 +        FFSWAP(int,        *got_output, ist->prev_sub.got_output);
 +        FFSWAP(int,        ret,         ist->prev_sub.ret);
 +        FFSWAP(AVSubtitle, subtitle,    ist->prev_sub.subtitle);
 +        if (end <= 0)
 +            goto out;
 +    }
 +
 +    if (!*got_output)
 +        return ret;
 +
 +    sub2video_update(ist, &subtitle);
 +
 +    if (!subtitle.num_rects)
 +        goto out;
 +
 +    ist->frames_decoded++;
 +
 +    for (i = 0; i < nb_output_streams; i++) {
 +        OutputStream *ost = output_streams[i];
 +
 +        if (!check_output_constraints(ist, ost) || !ost->encoding_needed
 +            || ost->enc->type != AVMEDIA_TYPE_SUBTITLE)
 +            continue;
 +
 +        do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle);
 +    }
 +
 +out:
 +    avsubtitle_free(&subtitle);
 +    return ret;
 +}
 +
 +static int send_filter_eof(InputStream *ist)
 +{
 +    int i, ret;
 +    for (i = 0; i < ist->nb_filters; i++) {
 +#if 1
 +        ret = av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
 +#else
 +        ret = av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
 +#endif
 +        if (ret < 0)
 +            return ret;
 +    }
 +    return 0;
 +}
 +
 +/* pkt = NULL means EOF (needed to flush decoder buffers) */
 +static int process_input_packet(InputStream *ist, const AVPacket *pkt)
 +{
 +    int ret = 0, i;
 +    int got_output = 0;
 +
 +    AVPacket avpkt;
 +    if (!ist->saw_first_ts) {
 +        ist->dts = ist->st->avg_frame_rate.num ? - ist->dec_ctx->has_b_frames * AV_TIME_BASE / av_q2d(ist->st->avg_frame_rate) : 0;
 +        ist->pts = 0;
 +        if (pkt && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
 +            ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
 +            ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
 +        }
 +        ist->saw_first_ts = 1;
 +    }
 +
 +    if (ist->next_dts == AV_NOPTS_VALUE)
 +        ist->next_dts = ist->dts;
 +    if (ist->next_pts == AV_NOPTS_VALUE)
 +        ist->next_pts = ist->pts;
 +
 +    if (!pkt) {
 +        /* EOF handling */
 +        av_init_packet(&avpkt);
 +        avpkt.data = NULL;
 +        avpkt.size = 0;
 +        goto handle_eof;
 +    } else {
 +        avpkt = *pkt;
 +    }
 +
 +    if (pkt->dts != AV_NOPTS_VALUE) {
 +        ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
 +        if (ist->dec_ctx->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
 +            ist->next_pts = ist->pts = ist->dts;
 +    }
 +
 +    // while we have more to decode or while the decoder did output something on EOF
 +    while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
 +        int duration;
 +    handle_eof:
 +
 +        ist->pts = ist->next_pts;
 +        ist->dts = ist->next_dts;
 +
 +        if (avpkt.size && avpkt.size != pkt->size &&
 +            !(ist->dec->capabilities & CODEC_CAP_SUBFRAMES)) {
 +            av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
 +                   "Multiple frames in a packet from stream %d\n", pkt->stream_index);
 +            ist->showed_multi_packet_warning = 1;
 +        }
 +
 +        switch (ist->dec_ctx->codec_type) {
 +        case AVMEDIA_TYPE_AUDIO:
 +            ret = decode_audio    (ist, &avpkt, &got_output);
 +            break;
 +        case AVMEDIA_TYPE_VIDEO:
 +            ret = decode_video    (ist, &avpkt, &got_output);
 +            if (avpkt.duration) {
 +                duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
 +            } else if(ist->dec_ctx->framerate.num != 0 && ist->dec_ctx->framerate.den != 0) {
 +                int ticks= av_stream_get_parser(ist->st) ? av_stream_get_parser(ist->st)->repeat_pict+1 : ist->dec_ctx->ticks_per_frame;
 +                duration = ((int64_t)AV_TIME_BASE *
 +                                ist->dec_ctx->framerate.den * ticks) /
 +                                ist->dec_ctx->framerate.num / ist->dec_ctx->ticks_per_frame;
 +            } else
 +                duration = 0;
 +
 +            if(ist->dts != AV_NOPTS_VALUE && duration) {
 +                ist->next_dts += duration;
 +            }else
 +                ist->next_dts = AV_NOPTS_VALUE;
 +
 +            if (got_output)
 +                ist->next_pts += duration; //FIXME the duration is not correct in some cases
 +            break;
 +        case AVMEDIA_TYPE_SUBTITLE:
 +            ret = transcode_subtitles(ist, &avpkt, &got_output);
 +            break;
 +        default:
 +            return -1;
 +        }
 +
 +        if (ret < 0) {
 +            av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
 +                   ist->file_index, ist->st->index, av_err2str(ret));
 +            if (exit_on_error)
 +                exit_program(1);
 +            break;
 +        }
 +
 +        avpkt.dts=
 +        avpkt.pts= AV_NOPTS_VALUE;
 +
 +        // touch data and size only if not EOF
 +        if (pkt) {
 +            if(ist->dec_ctx->codec_type != AVMEDIA_TYPE_AUDIO)
 +                ret = avpkt.size;
 +            avpkt.data += ret;
 +            avpkt.size -= ret;
 +        }
 +        if (!got_output) {
 +            continue;
 +        }
 +        if (got_output && !pkt)
 +            break;
 +    }
 +
 +    /* after flushing, send an EOF on all the filter inputs attached to the stream */
 +    if (!pkt && ist->decoding_needed && !got_output) {
 +        int ret = send_filter_eof(ist);
 +        if (ret < 0) {
 +            av_log(NULL, AV_LOG_FATAL, "Error marking filters as finished\n");
 +            exit_program(1);
 +        }
 +    }
 +
 +    /* handle stream copy */
 +    if (!ist->decoding_needed) {
 +        ist->dts = ist->next_dts;
 +        switch (ist->dec_ctx->codec_type) {
 +        case AVMEDIA_TYPE_AUDIO:
 +            ist->next_dts += ((int64_t)AV_TIME_BASE * ist->dec_ctx->frame_size) /
 +                             ist->dec_ctx->sample_rate;
 +            break;
 +        case AVMEDIA_TYPE_VIDEO:
 +            if (ist->framerate.num) {
 +                // TODO: Remove work-around for c99-to-c89 issue 7
 +                AVRational time_base_q = AV_TIME_BASE_Q;
 +                int64_t next_dts = av_rescale_q(ist->next_dts, time_base_q, av_inv_q(ist->framerate));
 +                ist->next_dts = av_rescale_q(next_dts + 1, av_inv_q(ist->framerate), time_base_q);
 +            } else if (pkt->duration) {
 +                ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
 +            } else if(ist->dec_ctx->framerate.num != 0) {
 +                int ticks= av_stream_get_parser(ist->st) ? av_stream_get_parser(ist->st)->repeat_pict + 1 : ist->dec_ctx->ticks_per_frame;
 +                ist->next_dts += ((int64_t)AV_TIME_BASE *
 +                                  ist->dec_ctx->framerate.den * ticks) /
 +                                  ist->dec_ctx->framerate.num / ist->dec_ctx->ticks_per_frame;
 +            }
 +            break;
 +        }
 +        ist->pts = ist->dts;
 +        ist->next_pts = ist->next_dts;
 +    }
 +    for (i = 0; pkt && i < nb_output_streams; i++) {
 +        OutputStream *ost = output_streams[i];
 +
 +        if (!check_output_constraints(ist, ost) || ost->encoding_needed)
 +            continue;
 +
 +        do_streamcopy(ist, ost, pkt);
 +    }
 +
 +    return got_output;
 +}
 +
 +static void print_sdp(void)
 +{
 +    char sdp[16384];
 +    int i;
 +    int j;
 +    AVIOContext *sdp_pb;
 +    AVFormatContext **avc = av_malloc_array(nb_output_files, sizeof(*avc));
 +
 +    if (!avc)
 +        exit_program(1);
 +    for (i = 0, j = 0; i < nb_output_files; i++) {
 +        if (!strcmp(output_files[i]->ctx->oformat->name, "rtp")) {
 +            avc[j] = output_files[i]->ctx;
 +            j++;
 +        }
 +    }
 +
 +    av_sdp_create(avc, j, sdp, sizeof(sdp));
 +
 +    if (!sdp_filename) {
 +        printf("SDP:\n%s\n", sdp);
 +        fflush(stdout);
 +    } else {
 +        if (avio_open2(&sdp_pb, sdp_filename, AVIO_FLAG_WRITE, &int_cb, NULL) < 0) {
 +            av_log(NULL, AV_LOG_ERROR, "Failed to open sdp file '%s'\n", sdp_filename);
 +        } else {
 +            avio_printf(sdp_pb, "SDP:\n%s", sdp);
 +            avio_closep(&sdp_pb);
 +            av_freep(&sdp_filename);
 +        }
 +    }
 +
 +    av_freep(&avc);
 +}
 +
 +static const HWAccel *get_hwaccel(enum AVPixelFormat pix_fmt)
 +{
 +    int i;
 +    for (i = 0; hwaccels[i].name; i++)
 +        if (hwaccels[i].pix_fmt == pix_fmt)
 +            return &hwaccels[i];
 +    return NULL;
 +}
 +
 +static enum AVPixelFormat get_format(AVCodecContext *s, const enum AVPixelFormat *pix_fmts)
 +{
 +    InputStream *ist = s->opaque;
 +    const enum AVPixelFormat *p;
 +    int ret;
 +
 +    for (p = pix_fmts; *p != -1; p++) {
 +        const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(*p);
 +        const HWAccel *hwaccel;
 +
 +        if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL))
 +            break;
 +
 +        hwaccel = get_hwaccel(*p);
 +        if (!hwaccel ||
 +            (ist->active_hwaccel_id && ist->active_hwaccel_id != hwaccel->id) ||
 +            (ist->hwaccel_id != HWACCEL_AUTO && ist->hwaccel_id != hwaccel->id))
 +            continue;
 +
 +        ret = hwaccel->init(s);
 +        if (ret < 0) {
 +            if (ist->hwaccel_id == hwaccel->id) {
 +                av_log(NULL, AV_LOG_FATAL,
 +                       "%s hwaccel requested for input stream #%d:%d, "
 +                       "but cannot be initialized.\n", hwaccel->name,
 +                       ist->file_index, ist->st->index);
 +                return AV_PIX_FMT_NONE;
 +            }
 +            continue;
 +        }
 +        ist->active_hwaccel_id = hwaccel->id;
 +        ist->hwaccel_pix_fmt   = *p;
 +        break;
 +    }
 +
 +    return *p;
 +}
 +
 +static int get_buffer(AVCodecContext *s, AVFrame *frame, int flags)
 +{
 +    InputStream *ist = s->opaque;
 +
 +    if (ist->hwaccel_get_buffer && frame->format == ist->hwaccel_pix_fmt)
 +        return ist->hwaccel_get_buffer(s, frame, flags);
 +
 +    return avcodec_default_get_buffer2(s, frame, flags);
 +}
 +
 +static int init_input_stream(int ist_index, char *error, int error_len)
 +{
 +    int ret;
 +    InputStream *ist = input_streams[ist_index];
 +
 +    if (ist->decoding_needed) {
 +        AVCodec *codec = ist->dec;
 +        if (!codec) {
 +            snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
 +                    avcodec_get_name(ist->dec_ctx->codec_id), ist->file_index, ist->st->index);
 +            return AVERROR(EINVAL);
 +        }
 +
 +        ist->dec_ctx->opaque                = ist;
 +        ist->dec_ctx->get_format            = get_format;
 +        ist->dec_ctx->get_buffer2           = get_buffer;
 +        ist->dec_ctx->thread_safe_callbacks = 1;
 +
 +        av_opt_set_int(ist->dec_ctx, "refcounted_frames", 1, 0);
 +        if (ist->dec_ctx->codec_id == AV_CODEC_ID_DVB_SUBTITLE &&
 +           (ist->decoding_needed & DECODING_FOR_OST)) {
 +            av_dict_set(&ist->decoder_opts, "compute_edt", "1", AV_DICT_DONT_OVERWRITE);
 +            if (ist->decoding_needed & DECODING_FOR_FILTER)
 +                av_log(NULL, AV_LOG_WARNING, "Warning using DVB subtitles for filtering and output at the same time is not fully supported, also see -compute_edt [0|1]\n");
 +        }
 +
 +        if (!av_dict_get(ist->decoder_opts, "threads", NULL, 0))
 +            av_dict_set(&ist->decoder_opts, "threads", "auto", 0);
 +        if ((ret = avcodec_open2(ist->dec_ctx, codec, &ist->decoder_opts)) < 0) {
 +            if (ret == AVERROR_EXPERIMENTAL)
 +                abort_codec_experimental(codec, 0);
 +
 +            snprintf(error, error_len,
 +                     "Error while opening decoder for input stream "
 +                     "#%d:%d : %s",
 +                     ist->file_index, ist->st->index, av_err2str(ret));
 +            return ret;
 +        }
 +        assert_avoptions(ist->decoder_opts);
 +    }
 +
 +    ist->next_pts = AV_NOPTS_VALUE;
 +    ist->next_dts = AV_NOPTS_VALUE;
 +
 +    return 0;
 +}
 +
 +static InputStream *get_input_stream(OutputStream *ost)
 +{
 +    if (ost->source_index >= 0)
 +        return input_streams[ost->source_index];
 +    return NULL;
 +}
 +
 +static int compare_int64(const void *a, const void *b)
 +{
 +    int64_t va = *(int64_t *)a, vb = *(int64_t *)b;
 +    return va < vb ? -1 : va > vb ? +1 : 0;
 +}
 +
 +static int init_output_stream(OutputStream *ost, char *error, int error_len)
 +{
 +    int ret = 0;
 +
 +    if (ost->encoding_needed) {
 +        AVCodec      *codec = ost->enc;
 +        AVCodecContext *dec = NULL;
 +        InputStream *ist;
 +
 +        if ((ist = get_input_stream(ost)))
 +            dec = ist->dec_ctx;
 +        if (dec && dec->subtitle_header) {
 +            /* ASS code assumes this buffer is null terminated so add extra byte. */
 +            ost->enc_ctx->subtitle_header = av_mallocz(dec->subtitle_header_size + 1);
 +            if (!ost->enc_ctx->subtitle_header)
 +                return AVERROR(ENOMEM);
 +            memcpy(ost->enc_ctx->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
 +            ost->enc_ctx->subtitle_header_size = dec->subtitle_header_size;
 +        }
 +        if (!av_dict_get(ost->encoder_opts, "threads", NULL, 0))
 +            av_dict_set(&ost->encoder_opts, "threads", "auto", 0);
 +        av_dict_set(&ost->encoder_opts, "side_data_only_packets", "1", 0);
 +
 +        if ((ret = avcodec_open2(ost->enc_ctx, codec, &ost->encoder_opts)) < 0) {
 +            if (ret == AVERROR_EXPERIMENTAL)
 +                abort_codec_experimental(codec, 1);
 +            snprintf(error, error_len,
 +                     "Error while opening encoder for output stream #%d:%d - "
 +                     "maybe incorrect parameters such as bit_rate, rate, width or height",
 +                    ost->file_index, ost->index);
 +            return ret;
 +        }
 +        if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
 +            !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
 +            av_buffersink_set_frame_size(ost->filter->filter,
 +                                            ost->enc_ctx->frame_size);
 +        assert_avoptions(ost->encoder_opts);
 +        if (ost->enc_ctx->bit_rate && ost->enc_ctx->bit_rate < 1000)
 +            av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
 +                                         " It takes bits/s as argument, not kbits/s\n");
 +
 +        ret = avcodec_copy_context(ost->st->codec, ost->enc_ctx);
 +        if (ret < 0) {
 +            av_log(NULL, AV_LOG_FATAL,
 +                   "Error initializing the output stream codec context.\n");
 +            exit_program(1);
 +        }
 +
 +        // copy timebase while removing common factors
 +        ost->st->time_base = av_add_q(ost->enc_ctx->time_base, (AVRational){0, 1});
 +        ost->st->codec->codec= ost->enc_ctx->codec;
 +    } else {
 +        ret = av_opt_set_dict(ost->enc_ctx, &ost->encoder_opts);
 +        if (ret < 0) {
 +           av_log(NULL, AV_LOG_FATAL,
 +                  "Error setting up codec context options.\n");
 +           return ret;
 +        }
 +        // copy timebase while removing common factors
 +        ost->st->time_base = av_add_q(ost->st->codec->time_base, (AVRational){0, 1});
 +    }
 +
 +    return ret;
 +}
 +
 +static void parse_forced_key_frames(char *kf, OutputStream *ost,
 +                                    AVCodecContext *avctx)
 +{
 +    char *p;
 +    int n = 1, i, size, index = 0;
 +    int64_t t, *pts;
 +
 +    for (p = kf; *p; p++)
 +        if (*p == ',')
 +            n++;
 +    size = n;
 +    pts = av_malloc_array(size, sizeof(*pts));
 +    if (!pts) {
 +        av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
 +        exit_program(1);
 +    }
 +
 +    p = kf;
 +    for (i = 0; i < n; i++) {
 +        char *next = strchr(p, ',');
 +
 +        if (next)
 +            *next++ = 0;
 +
 +        if (!memcmp(p, "chapters", 8)) {
 +
 +            AVFormatContext *avf = output_files[ost->file_index]->ctx;
 +            int j;
 +
 +            if (avf->nb_chapters > INT_MAX - size ||
 +                !(pts = av_realloc_f(pts, size += avf->nb_chapters - 1,
 +                                     sizeof(*pts)))) {
 +                av_log(NULL, AV_LOG_FATAL,
 +                       "Could not allocate forced key frames array.\n");
 +                exit_program(1);
 +            }
 +            t = p[8] ? parse_time_or_die("force_key_frames", p + 8, 1) : 0;
 +            t = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
 +
 +            for (j = 0; j < avf->nb_chapters; j++) {
 +                AVChapter *c = avf->chapters[j];
 +                av_assert1(index < size);
 +                pts[index++] = av_rescale_q(c->start, c->time_base,
 +                                            avctx->time_base) + t;
 +            }
 +
 +        } else {
 +
 +            t = parse_time_or_die("force_key_frames", p, 1);
 +            av_assert1(index < size);
 +            pts[index++] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
 +
 +        }
 +
 +        p = next;
 +    }
 +
 +    av_assert0(index == size);
 +    qsort(pts, size, sizeof(*pts), compare_int64);
 +    ost->forced_kf_count = size;
 +    ost->forced_kf_pts   = pts;
 +}
 +
 +static void report_new_stream(int input_index, AVPacket *pkt)
 +{
 +    InputFile *file = input_files[input_index];
 +    AVStream *st = file->ctx->streams[pkt->stream_index];
 +
 +    if (pkt->stream_index < file->nb_streams_warn)
 +        return;
 +    av_log(file->ctx, AV_LOG_WARNING,
 +           "New %s stream %d:%d at pos:%"PRId64" and DTS:%ss\n",
 +           av_get_media_type_string(st->codec->codec_type),
 +           input_index, pkt->stream_index,
 +           pkt->pos, av_ts2timestr(pkt->dts, &st->time_base));
 +    file->nb_streams_warn = pkt->stream_index + 1;
 +}
 +
 +static void set_encoder_id(OutputFile *of, OutputStream *ost)
 +{
 +    AVDictionaryEntry *e;
 +
 +    uint8_t *encoder_string;
 +    int encoder_string_len;
 +    int format_flags = 0;
 +    int codec_flags = 0;
 +
 +    if (av_dict_get(ost->st->metadata, "encoder",  NULL, 0))
 +        return;
 +
 +    e = av_dict_get(of->opts, "fflags", NULL, 0);
 +    if (e) {
 +        const AVOption *o = av_opt_find(of->ctx, "fflags", NULL, 0, 0);
 +        if (!o)
 +            return;
 +        av_opt_eval_flags(of->ctx, o, e->value, &format_flags);
 +    }
 +    e = av_dict_get(ost->encoder_opts, "flags", NULL, 0);
 +    if (e) {
 +        const AVOption *o = av_opt_find(ost->enc_ctx, "flags", NULL, 0, 0);
 +        if (!o)
 +            return;
 +        av_opt_eval_flags(ost->enc_ctx, o, e->value, &codec_flags);
 +    }
 +
 +    encoder_string_len = sizeof(LIBAVCODEC_IDENT) + strlen(ost->enc->name) + 2;
 +    encoder_string     = av_mallocz(encoder_string_len);
 +    if (!encoder_string)
 +        exit_program(1);
 +
++    if (!(format_flags & AVFMT_FLAG_BITEXACT) && !(codec_flags & AV_CODEC_FLAG_BITEXACT))
 +        av_strlcpy(encoder_string, LIBAVCODEC_IDENT " ", encoder_string_len);
 +    else
 +        av_strlcpy(encoder_string, "Lavc ", encoder_string_len);
 +    av_strlcat(encoder_string, ost->enc->name, encoder_string_len);
 +    av_dict_set(&ost->st->metadata, "encoder",  encoder_string,
 +                AV_DICT_DONT_STRDUP_VAL | AV_DICT_DONT_OVERWRITE);
 +}
 +
 +static int transcode_init(void)
 +{
 +    int ret = 0, i, j, k;
 +    AVFormatContext *oc;
 +    OutputStream *ost;
 +    InputStream *ist;
 +    char error[1024] = {0};
 +    int want_sdp = 1;
 +
 +    for (i = 0; i < nb_filtergraphs; i++) {
 +        FilterGraph *fg = filtergraphs[i];
 +        for (j = 0; j < fg->nb_outputs; j++) {
 +            OutputFilter *ofilter = fg->outputs[j];
 +            if (!ofilter->ost || ofilter->ost->source_index >= 0)
 +                continue;
 +            if (fg->nb_inputs != 1)
 +                continue;
 +            for (k = nb_input_streams-1; k >= 0 ; k--)
 +                if (fg->inputs[0]->ist == input_streams[k])
 +                    break;
 +            ofilter->ost->source_index = k;
 +        }
 +    }
 +
 +    /* init framerate emulation */
 +    for (i = 0; i < nb_input_files; i++) {
 +        InputFile *ifile = input_files[i];
 +        if (ifile->rate_emu)
 +            for (j = 0; j < ifile->nb_streams; j++)
 +                input_streams[j + ifile->ist_index]->start = av_gettime_relative();
 +    }
 +
 +    /* for each output stream, we compute the right encoding parameters */
 +    for (i = 0; i < nb_output_streams; i++) {
 +        AVCodecContext *enc_ctx;
 +        AVCodecContext *dec_ctx = NULL;
 +        ost = output_streams[i];
 +        oc  = output_files[ost->file_index]->ctx;
 +        ist = get_input_stream(ost);
 +
 +        if (ost->attachment_filename)
 +            continue;
 +
 +        enc_ctx = ost->stream_copy ? ost->st->codec : ost->enc_ctx;
 +
 +        if (ist) {
 +            dec_ctx = ist->dec_ctx;
 +
 +            ost->st->disposition          = ist->st->disposition;
 +            enc_ctx->bits_per_raw_sample    = dec_ctx->bits_per_raw_sample;
 +            enc_ctx->chroma_sample_location = dec_ctx->chroma_sample_location;
 +        } else {
 +            for (j=0; j<oc->nb_streams; j++) {
 +                AVStream *st = oc->streams[j];
 +                if (st != ost->st && st->codec->codec_type == enc_ctx->codec_type)
 +                    break;
 +            }
 +            if (j == oc->nb_streams)
 +                if (enc_ctx->codec_type == AVMEDIA_TYPE_AUDIO || enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO)
 +                    ost->st->disposition = AV_DISPOSITION_DEFAULT;
 +        }
 +
 +        if (ost->stream_copy) {
 +            AVRational sar;
 +            uint64_t extra_size;
 +
 +            av_assert0(ist && !ost->filter);
 +
 +            extra_size = (uint64_t)dec_ctx->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
 +
 +            if (extra_size > INT_MAX) {
 +                return AVERROR(EINVAL);
 +            }
 +
 +            /* if stream_copy is selected, no need to decode or encode */
 +            enc_ctx->codec_id   = dec_ctx->codec_id;
 +            enc_ctx->codec_type = dec_ctx->codec_type;
 +
 +            if (!enc_ctx->codec_tag) {
 +                unsigned int codec_tag;
 +                if (!oc->oformat->codec_tag ||
 +                     av_codec_get_id (oc->oformat->codec_tag, dec_ctx->codec_tag) == enc_ctx->codec_id ||
 +                     !av_codec_get_tag2(oc->oformat->codec_tag, dec_ctx->codec_id, &codec_tag))
 +                    enc_ctx->codec_tag = dec_ctx->codec_tag;
 +            }
 +
 +            enc_ctx->bit_rate       = dec_ctx->bit_rate;
 +            enc_ctx->rc_max_rate    = dec_ctx->rc_max_rate;
 +            enc_ctx->rc_buffer_size = dec_ctx->rc_buffer_size;
 +            enc_ctx->field_order    = dec_ctx->field_order;
 +            if (dec_ctx->extradata_size) {
 +                enc_ctx->extradata      = av_mallocz(extra_size);
 +                if (!enc_ctx->extradata) {
 +                    return AVERROR(ENOMEM);
 +                }
 +                memcpy(enc_ctx->extradata, dec_ctx->extradata, dec_ctx->extradata_size);
 +            }
 +            enc_ctx->extradata_size= dec_ctx->extradata_size;
 +            enc_ctx->bits_per_coded_sample  = dec_ctx->bits_per_coded_sample;
 +
 +            enc_ctx->time_base = ist->st->time_base;
 +            /*
 +             * Avi is a special case here because it supports variable fps but
 +             * having the fps and timebase differe significantly adds quite some
 +             * overhead
 +             */
 +            if(!strcmp(oc->oformat->name, "avi")) {
 +                if ( copy_tb<0 && av_q2d(ist->st->r_frame_rate) >= av_q2d(ist->st->avg_frame_rate)
 +                               && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(ist->st->time_base)
 +                               && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(dec_ctx->time_base)
 +                               && av_q2d(ist->st->time_base) < 1.0/500 && av_q2d(dec_ctx->time_base) < 1.0/500
 +                     || copy_tb==2){
 +                    enc_ctx->time_base.num = ist->st->r_frame_rate.den;
 +                    enc_ctx->time_base.den = 2*ist->st->r_frame_rate.num;
 +                    enc_ctx->ticks_per_frame = 2;
 +                } else if (   copy_tb<0 && av_q2d(dec_ctx->time_base)*dec_ctx->ticks_per_frame > 2*av_q2d(ist->st->time_base)
 +                                 && av_q2d(ist->st->time_base) < 1.0/500
 +                    || copy_tb==0){
 +                    enc_ctx->time_base = dec_ctx->time_base;
 +                    enc_ctx->time_base.num *= dec_ctx->ticks_per_frame;
 +                    enc_ctx->time_base.den *= 2;
 +                    enc_ctx->ticks_per_frame = 2;
 +                }
 +            } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
 +                      && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
 +                      && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
 +                      && strcmp(oc->oformat->name, "f4v")
 +            ) {
 +                if(   copy_tb<0 && dec_ctx->time_base.den
 +                                && av_q2d(dec_ctx->time_base)*dec_ctx->ticks_per_frame > av_q2d(ist->st->time_base)
 +                                && av_q2d(ist->st->time_base) < 1.0/500
 +                   || copy_tb==0){
 +                    enc_ctx->time_base = dec_ctx->time_base;
 +                    enc_ctx->time_base.num *= dec_ctx->ticks_per_frame;
 +                }
 +            }
 +            if (   enc_ctx->codec_tag == AV_RL32("tmcd")
 +                && dec_ctx->time_base.num < dec_ctx->time_base.den
 +                && dec_ctx->time_base.num > 0
 +                && 121LL*dec_ctx->time_base.num > dec_ctx->time_base.den) {
 +                enc_ctx->time_base = dec_ctx->time_base;
 +            }
 +
 +            if (ist && !ost->frame_rate.num)
 +                ost->frame_rate = ist->framerate;
 +            if(ost->frame_rate.num)
 +                enc_ctx->time_base = av_inv_q(ost->frame_rate);
 +
 +            av_reduce(&enc_ctx->time_base.num, &enc_ctx->time_base.den,
 +                        enc_ctx->time_base.num, enc_ctx->time_base.den, INT_MAX);
 +
 +            if (ist->st->nb_side_data) {
 +                ost->st->side_data = av_realloc_array(NULL, ist->st->nb_side_data,
 +                                                      sizeof(*ist->st->side_data));
 +                if (!ost->st->side_data)
 +                    return AVERROR(ENOMEM);
 +
 +                ost->st->nb_side_data = 0;
 +                for (j = 0; j < ist->st->nb_side_data; j++) {
 +                    const AVPacketSideData *sd_src = &ist->st->side_data[j];
 +                    AVPacketSideData *sd_dst = &ost->st->side_data[ost->st->nb_side_data];
 +
 +                    if (ost->rotate_overridden && sd_src->type == AV_PKT_DATA_DISPLAYMATRIX)
 +                        continue;
 +
 +                    sd_dst->data = av_malloc(sd_src->size);
 +                    if (!sd_dst->data)
 +                        return AVERROR(ENOMEM);
 +                    memcpy(sd_dst->data, sd_src->data, sd_src->size);
 +                    sd_dst->size = sd_src->size;
 +                    sd_dst->type = sd_src->type;
 +                    ost->st->nb_side_data++;
 +                }
 +            }
 +
 +            ost->parser = av_parser_init(enc_ctx->codec_id);
 +
 +            switch (enc_ctx->codec_type) {
 +            case AVMEDIA_TYPE_AUDIO:
 +                if (audio_volume != 256) {
 +                    av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
 +                    exit_program(1);
 +                }
 +                enc_ctx->channel_layout     = dec_ctx->channel_layout;
 +                enc_ctx->sample_rate        = dec_ctx->sample_rate;
 +                enc_ctx->channels           = dec_ctx->channels;
 +                enc_ctx->frame_size         = dec_ctx->frame_size;
 +                enc_ctx->audio_service_type = dec_ctx->audio_service_type;
 +                enc_ctx->block_align        = dec_ctx->block_align;
 +                enc_ctx->initial_padding    = dec_ctx->delay;
 +#if FF_API_AUDIOENC_DELAY
 +                enc_ctx->delay              = dec_ctx->delay;
 +#endif
 +                if((enc_ctx->block_align == 1 || enc_ctx->block_align == 1152 || enc_ctx->block_align == 576) && enc_ctx->codec_id == AV_CODEC_ID_MP3)
 +                    enc_ctx->block_align= 0;
 +                if(enc_ctx->codec_id == AV_CODEC_ID_AC3)
 +                    enc_ctx->block_align= 0;
 +                break;
 +            case AVMEDIA_TYPE_VIDEO:
 +                enc_ctx->pix_fmt            = dec_ctx->pix_fmt;
 +                enc_ctx->width              = dec_ctx->width;
 +                enc_ctx->height             = dec_ctx->height;
 +                enc_ctx->has_b_frames       = dec_ctx->has_b_frames;
 +                if (ost->frame_aspect_ratio.num) { // overridden by the -aspect cli option
 +                    sar =
 +                        av_mul_q(ost->frame_aspect_ratio,
 +                                 (AVRational){ enc_ctx->height, enc_ctx->width });
 +                    av_log(NULL, AV_LOG_WARNING, "Overriding aspect ratio "
 +                           "with stream copy may produce invalid files\n");
 +                }
 +                else if (ist->st->sample_aspect_ratio.num)
 +                    sar = ist->st->sample_aspect_ratio;
 +                else
 +                    sar = dec_ctx->sample_aspect_ratio;
 +                ost->st->sample_aspect_ratio = enc_ctx->sample_aspect_ratio = sar;
 +                ost->st->avg_frame_rate = ist->st->avg_frame_rate;
 +                ost->st->r_frame_rate = ist->st->r_frame_rate;
 +                break;
 +            case AVMEDIA_TYPE_SUBTITLE:
 +                enc_ctx->width  = dec_ctx->width;
 +                enc_ctx->height = dec_ctx->height;
 +                break;
 +            case AVMEDIA_TYPE_UNKNOWN:
 +            case AVMEDIA_TYPE_DATA:
 +            case AVMEDIA_TYPE_ATTACHMENT:
 +                break;
 +            default:
 +                abort();
 +            }
 +        } else {
 +            if (!ost->enc)
 +                ost->enc = avcodec_find_encoder(enc_ctx->codec_id);
 +            if (!ost->enc) {
 +                /* should only happen when a default codec is not present. */
 +                snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
 +                         avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
 +                ret = AVERROR(EINVAL);
 +                goto dump_format;
 +            }
 +
 +            set_encoder_id(output_files[ost->file_index], ost);
 +
 +            if (!ost->filter &&
 +                (enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO ||
 +                 enc_ctx->codec_type == AVMEDIA_TYPE_AUDIO)) {
 +                    FilterGraph *fg;
 +                    fg = init_simple_filtergraph(ist, ost);
 +                    if (configure_filtergraph(fg)) {
 +                        av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
 +                        exit_program(1);
 +                    }
 +            }
 +
 +            if (enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO) {
 +                if (!ost->frame_rate.num)
 +                    ost->frame_rate = av_buffersink_get_frame_rate(ost->filter->filter);
 +                if (ist && !ost->frame_rate.num)
 +                    ost->frame_rate = ist->framerate;
 +                if (ist && !ost->frame_rate.num)
 +                    ost->frame_rate = ist->st->r_frame_rate;
 +                if (ist && !ost->frame_rate.num) {
 +                    ost->frame_rate = (AVRational){25, 1};
 +                    av_log(NULL, AV_LOG_WARNING,
 +                           "No information "
 +                           "about the input framerate is available. Falling "
 +                           "back to a default value of 25fps for output stream #%d:%d. Use the -r option "
 +                           "if you want a different framerate.\n",
 +                           ost->file_index, ost->index);
 +                }
 +//                    ost->frame_rate = ist->st->avg_frame_rate.num ? ist->st->avg_frame_rate : (AVRational){25, 1};
 +                if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
 +                    int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
 +                    ost->frame_rate = ost->enc->supported_framerates[idx];
 +                }
 +                // reduce frame rate for mpeg4 to be within the spec limits
 +                if (enc_ctx->codec_id == AV_CODEC_ID_MPEG4) {
 +                    av_reduce(&ost->frame_rate.num, &ost->frame_rate.den,
 +                              ost->frame_rate.num, ost->frame_rate.den, 65535);
 +                }
 +            }
 +
 +            switch (enc_ctx->codec_type) {
 +            case AVMEDIA_TYPE_AUDIO:
 +                enc_ctx->sample_fmt     = ost->filter->filter->inputs[0]->format;
 +                enc_ctx->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
 +                enc_ctx->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
 +                enc_ctx->channels       = avfilter_link_get_channels(ost->filter->filter->inputs[0]);
 +                enc_ctx->time_base      = (AVRational){ 1, enc_ctx->sample_rate };
 +                break;
 +            case AVMEDIA_TYPE_VIDEO:
 +                enc_ctx->time_base = av_inv_q(ost->frame_rate);
 +                if (!(enc_ctx->time_base.num && enc_ctx->time_base.den))
 +                    enc_ctx->time_base = ost->filter->filter->inputs[0]->time_base;
 +                if (   av_q2d(enc_ctx->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
 +                   && (video_sync_method == VSYNC_CFR || video_sync_method == VSYNC_VSCFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
 +                    av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
 +                                               "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
 +                }
 +                for (j = 0; j < ost->forced_kf_count; j++)
 +                    ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
 +                                                         AV_TIME_BASE_Q,
 +                                                         enc_ctx->time_base);
 +
 +                enc_ctx->width  = ost->filter->filter->inputs[0]->w;
 +                enc_ctx->height = ost->filter->filter->inputs[0]->h;
 +                enc_ctx->sample_aspect_ratio = ost->st->sample_aspect_ratio =
 +                    ost->frame_aspect_ratio.num ? // overridden by the -aspect cli option
 +                    av_mul_q(ost->frame_aspect_ratio, (AVRational){ enc_ctx->height, enc_ctx->width }) :
 +                    ost->filter->filter->inputs[0]->sample_aspect_ratio;
 +                if (!strncmp(ost->enc->name, "libx264", 7) &&
 +                    enc_ctx->pix_fmt == AV_PIX_FMT_NONE &&
 +                    ost->filter->filter->inputs[0]->format != AV_PIX_FMT_YUV420P)
 +                    av_log(NULL, AV_LOG_WARNING,
 +                           "No pixel format specified, %s for H.264 encoding chosen.\n"
 +                           "Use -pix_fmt yuv420p for compatibility with outdated media players.\n",
 +                           av_get_pix_fmt_name(ost->filter->filter->inputs[0]->format));
 +                if (!strncmp(ost->enc->name, "mpeg2video", 10) &&
 +                    enc_ctx->pix_fmt == AV_PIX_FMT_NONE &&
 +                    ost->filter->filter->inputs[0]->format != AV_PIX_FMT_YUV420P)
 +                    av_log(NULL, AV_LOG_WARNING,
 +                           "No pixel format specified, %s for MPEG-2 encoding chosen.\n"
 +                           "Use -pix_fmt yuv420p for compatibility with outdated media players.\n",
 +                           av_get_pix_fmt_name(ost->filter->filter->inputs[0]->format));
 +                enc_ctx->pix_fmt = ost->filter->filter->inputs[0]->format;
 +
 +                ost->st->avg_frame_rate = ost->frame_rate;
 +
 +                if (!dec_ctx ||
 +                    enc_ctx->width   != dec_ctx->width  ||
 +                    enc_ctx->height  != dec_ctx->height ||
 +                    enc_ctx->pix_fmt != dec_ctx->pix_fmt) {
 +                    enc_ctx->bits_per_raw_sample = frame_bits_per_raw_sample;
 +                }
 +
 +                if (ost->forced_keyframes) {
 +                    if (!strncmp(ost->forced_keyframes, "expr:", 5)) {
 +                        ret = av_expr_parse(&ost->forced_keyframes_pexpr, ost->forced_keyframes+5,
 +                                            forced_keyframes_const_names, NULL, NULL, NULL, NULL, 0, NULL);
 +                        if (ret < 0) {
 +                            av_log(NULL, AV_LOG_ERROR,
 +                                   "Invalid force_key_frames expression '%s'\n", ost->forced_keyframes+5);
 +                            return ret;
 +                        }
 +                        ost->forced_keyframes_expr_const_values[FKF_N] = 0;
 +                        ost->forced_keyframes_expr_const_values[FKF_N_FORCED] = 0;
 +                        ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] = NAN;
 +                        ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] = NAN;
 +
 +                        // Don't parse the 'forced_keyframes' in case of 'keep-source-keyframes',
 +                        // parse it only for static kf timings
 +                    } else if(strncmp(ost->forced_keyframes, "source", 6)) {
 +                        parse_forced_key_frames(ost->forced_keyframes, ost, ost->enc_ctx);
 +                    }
 +                }
 +                break;
 +            case AVMEDIA_TYPE_SUBTITLE:
 +                enc_ctx->time_base = (AVRational){1, 1000};
 +                if (!enc_ctx->width) {
 +                    enc_ctx->width     = input_streams[ost->source_index]->st->codec->width;
 +                    enc_ctx->height    = input_streams[ost->source_index]->st->codec->height;
 +                }
 +                break;
 +            case AVMEDIA_TYPE_DATA:
 +                break;
 +            default:
 +                abort();
 +                break;
 +            }
 +        }
 +
 +        if (ost->disposition) {
 +            static const AVOption opts[] = {
 +                { "disposition"         , NULL, 0, AV_OPT_TYPE_FLAGS, { .i64 = 0 }, INT64_MIN, INT64_MAX, .unit = "flags" },
 +                { "default"             , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_DEFAULT           },    .unit = "flags" },
 +                { "dub"                 , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_DUB               },    .unit = "flags" },
 +                { "original"            , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_ORIGINAL          },    .unit = "flags" },
 +                { "comment"             , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_COMMENT           },    .unit = "flags" },
 +                { "lyrics"              , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_LYRICS            },    .unit = "flags" },
 +                { "karaoke"             , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_KARAOKE           },    .unit = "flags" },
 +                { "forced"              , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_FORCED            },    .unit = "flags" },
 +                { "hearing_impaired"    , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_HEARING_IMPAIRED  },    .unit = "flags" },
 +                { "visual_impaired"     , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_VISUAL_IMPAIRED   },    .unit = "flags" },
 +                { "clean_effects"       , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_CLEAN_EFFECTS     },    .unit = "flags" },
 +                { "captions"            , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_CAPTIONS          },    .unit = "flags" },
 +                { "descriptions"        , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_DESCRIPTIONS      },    .unit = "flags" },
 +                { "metadata"            , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_METADATA          },    .unit = "flags" },
 +                { NULL },
 +            };
 +            static const AVClass class = {
 +                .class_name = "",
 +                .item_name  = av_default_item_name,
 +                .option     = opts,
 +                .version    = LIBAVUTIL_VERSION_INT,
 +            };
 +            const AVClass *pclass = &class;
 +
 +            ret = av_opt_eval_flags(&pclass, &opts[0], ost->disposition, &ost->st->disposition);
 +            if (ret < 0)
 +                goto dump_format;
 +        }
 +    }
 +
 +    /* open each encoder */
 +    for (i = 0; i < nb_output_streams; i++) {
 +        ret = init_output_stream(output_streams[i], error, sizeof(error));
 +        if (ret < 0)
 +            goto dump_format;
 +    }
 +
 +    /* init input streams */
 +    for (i = 0; i < nb_input_streams; i++)
 +        if ((ret = init_input_stream(i, error, sizeof(error))) < 0) {
 +            for (i = 0; i < nb_output_streams; i++) {
 +                ost = output_streams[i];
 +                avcodec_close(ost->enc_ctx);
 +            }
 +            goto dump_format;
 +        }
 +
 +    /* discard unused programs */
 +    for (i = 0; i < nb_input_files; i++) {
 +        InputFile *ifile = input_files[i];
 +        for (j = 0; j < ifile->ctx->nb_programs; j++) {
 +            AVProgram *p = ifile->ctx->programs[j];
 +            int discard  = AVDISCARD_ALL;
 +
 +            for (k = 0; k < p->nb_stream_indexes; k++)
 +                if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
 +                    discard = AVDISCARD_DEFAULT;
 +                    break;
 +                }
 +            p->discard = discard;
 +        }
 +    }
 +
 +    /* open files and write file headers */
 +    for (i = 0; i < nb_output_files; i++) {
 +        oc = output_files[i]->ctx;
 +        oc->interrupt_callback = int_cb;
 +        if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
 +            snprintf(error, sizeof(error),
 +                     "Could not write header for output file #%d "
 +                     "(incorrect codec parameters ?): %s",
 +                     i, av_err2str(ret));
 +            ret = AVERROR(EINVAL);
 +            goto dump_format;
 +        }
 +//         assert_avoptions(output_files[i]->opts);
 +        if (strcmp(oc->oformat->name, "rtp")) {
 +            want_sdp = 0;
 +        }
 +    }
 +
 + dump_format:
 +    /* dump the file output parameters - cannot be done before in case
 +       of stream copy */
 +    for (i = 0; i < nb_output_files; i++) {
 +        av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
 +    }
 +
 +    /* dump the stream mapping */
 +    av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
 +    for (i = 0; i < nb_input_streams; i++) {
 +        ist = input_streams[i];
 +
 +        for (j = 0; j < ist->nb_filters; j++) {
 +            if (ist->filters[j]->graph->graph_desc) {
 +                av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
 +                       ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
 +                       ist->filters[j]->name);
 +                if (nb_filtergraphs > 1)
 +                    av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
 +                av_log(NULL, AV_LOG_INFO, "\n");
 +            }
 +        }
 +    }
 +
 +    for (i = 0; i < nb_output_streams; i++) {
 +        ost = output_streams[i];
 +
 +        if (ost->attachment_filename) {
 +            /* an attached file */
 +            av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
 +                   ost->attachment_filename, ost->file_index, ost->index);
 +            continue;
 +        }
 +
 +        if (ost->filter && ost->filter->graph->graph_desc) {
 +            /* output from a complex graph */
 +            av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
 +            if (nb_filtergraphs > 1)
 +                av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
 +
 +            av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
 +                   ost->index, ost->enc ? ost->enc->name : "?");
 +            continue;
 +        }
 +
 +        av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
 +               input_streams[ost->source_index]->file_index,
 +               input_streams[ost->source_index]->st->index,
 +               ost->file_index,
 +               ost->index);
 +        if (ost->sync_ist != input_streams[ost->source_index])
 +            av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
 +                   ost->sync_ist->file_index,
 +                   ost->sync_ist->st->index);
 +        if (ost->stream_copy)
 +            av_log(NULL, AV_LOG_INFO, " (copy)");
 +        else {
 +            const AVCodec *in_codec    = input_streams[ost->source_index]->dec;
 +            const AVCodec *out_codec   = ost->enc;
 +            const char *decoder_name   = "?";
 +            const char *in_codec_name  = "?";
 +            const char *encoder_name   = "?";
 +            const char *out_codec_name = "?";
 +            const AVCodecDescriptor *desc;
 +
 +            if (in_codec) {
 +                decoder_name  = in_codec->name;
 +                desc = avcodec_descriptor_get(in_codec->id);
 +                if (desc)
 +                    in_codec_name = desc->name;
 +                if (!strcmp(decoder_name, in_codec_name))
 +                    decoder_name = "native";
 +            }
 +
 +            if (out_codec) {
 +                encoder_name   = out_codec->name;
 +                desc = avcodec_descriptor_get(out_codec->id);
 +                if (desc)
 +                    out_codec_name = desc->name;
 +                if (!strcmp(encoder_name, out_codec_name))
 +                    encoder_name = "native";
 +            }
 +
 +            av_log(NULL, AV_LOG_INFO, " (%s (%s) -> %s (%s))",
 +                   in_codec_name, decoder_name,
 +                   out_codec_name, encoder_name);
 +        }
 +        av_log(NULL, AV_LOG_INFO, "\n");
 +    }
 +
 +    if (ret) {
 +        av_log(NULL, AV_LOG_ERROR, "%s\n", error);
 +        return ret;
 +    }
 +
 +    if (sdp_filename || want_sdp) {
 +        print_sdp();
 +    }
 +
 +    transcode_init_done = 1;
 +
 +    return 0;
 +}
 +
 +/* Return 1 if there remain streams where more output is wanted, 0 otherwise. */
 +static int need_output(void)
 +{
 +    int i;
 +
 +    for (i = 0; i < nb_output_streams; i++) {
 +        OutputStream *ost    = output_streams[i];
 +        OutputFile *of       = output_files[ost->file_index];
 +        AVFormatContext *os  = output_files[ost->file_index]->ctx;
 +
 +        if (ost->finished ||
 +            (os->pb && avio_tell(os->pb) >= of->limit_filesize))
 +            continue;
 +        if (ost->frame_number >= ost->max_frames) {
 +            int j;
 +            for (j = 0; j < of->ctx->nb_streams; j++)
 +                close_output_stream(output_streams[of->ost_index + j]);
 +            continue;
 +        }
 +
 +        return 1;
 +    }
 +
 +    return 0;
 +}
 +
 +/**
 + * Select the output stream to process.
 + *
 + * @return  selected output stream, or NULL if none available
 + */
 +static OutputStream *choose_output(void)
 +{
 +    int i;
 +    int64_t opts_min = INT64_MAX;
 +    OutputStream *ost_min = NULL;
 +
 +    for (i = 0; i < nb_output_streams; i++) {
 +        OutputStream *ost = output_streams[i];
 +        int64_t opts = av_rescale_q(ost->st->cur_dts, ost->st->time_base,
 +                                    AV_TIME_BASE_Q);
 +        if (!ost->finished && opts < opts_min) {
 +            opts_min = opts;
 +            ost_min  = ost->unavailable ? NULL : ost;
 +        }
 +    }
 +    return ost_min;
 +}
 +
 +static int check_keyboard_interaction(int64_t cur_time)
 +{
 +    int i, ret, key;
 +    static int64_t last_time;
 +    if (received_nb_signals)
 +        return AVERROR_EXIT;
 +    /* read_key() returns 0 on EOF */
 +    if(cur_time - last_time >= 100000 && !run_as_daemon){
 +        key =  read_key();
 +        last_time = cur_time;
 +    }else
 +        key = -1;
 +    if (key == 'q')
 +        return AVERROR_EXIT;
 +    if (key == '+') av_log_set_level(av_log_get_level()+10);
 +    if (key == '-') av_log_set_level(av_log_get_level()-10);
 +    if (key == 's') qp_hist     ^= 1;
 +    if (key == 'h'){
 +        if (do_hex_dump){
 +            do_hex_dump = do_pkt_dump = 0;
 +        } else if(do_pkt_dump){
 +            do_hex_dump = 1;
 +        } else
 +            do_pkt_dump = 1;
 +        av_log_set_level(AV_LOG_DEBUG);
 +    }
 +    if (key == 'c' || key == 'C'){
 +        char buf[4096], target[64], command[256], arg[256] = {0};
 +        double time;
 +        int k, n = 0;
 +        fprintf(stderr, "\nEnter command: <target>|all <time>|-1 <command>[ <argument>]\n");
 +        i = 0;
 +        while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
 +            if (k > 0)
 +                buf[i++] = k;
 +        buf[i] = 0;
 +        if (k > 0 &&
 +            (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
 +            av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
 +                   target, time, command, arg);
 +            for (i = 0; i < nb_filtergraphs; i++) {
 +                FilterGraph *fg = filtergraphs[i];
 +                if (fg->graph) {
 +                    if (time < 0) {
 +                        ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
 +                                                          key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
 +                        fprintf(stderr, "Command reply for stream %d: ret:%d res:\n%s", i, ret, buf);
 +                    } else if (key == 'c') {
 +                        fprintf(stderr, "Queing commands only on filters supporting the specific command is unsupported\n");
 +                        ret = AVERROR_PATCHWELCOME;
 +                    } else {
 +                        ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
 +                        if (ret < 0)
 +                            fprintf(stderr, "Queing command failed with error %s\n", av_err2str(ret));
 +                    }
 +                }
 +            }
 +        } else {
 +            av_log(NULL, AV_LOG_ERROR,
 +                   "Parse error, at least 3 arguments were expected, "
 +                   "only %d given in string '%s'\n", n, buf);
 +        }
 +    }
 +    if (key == 'd' || key == 'D'){
 +        int debug=0;
 +        if(key == 'D') {
 +            debug = input_streams[0]->st->codec->debug<<1;
 +            if(!debug) debug = 1;
 +            while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
 +                debug += debug;
 +        }else
 +            if(scanf("%d", &debug)!=1)
 +                fprintf(stderr,"error parsing debug value\n");
 +        for(i=0;i<nb_input_streams;i++) {
 +            input_streams[i]->st->codec->debug = debug;
 +        }
 +        for(i=0;i<nb_output_streams;i++) {
 +            OutputStream *ost = output_streams[i];
 +            ost->enc_ctx->debug = debug;
 +        }
 +        if(debug) av_log_set_level(AV_LOG_DEBUG);
 +        fprintf(stderr,"debug=%d\n", debug);
 +    }
 +    if (key == '?'){
 +        fprintf(stderr, "key    function\n"
 +                        "?      show this help\n"
 +                        "+      increase verbosity\n"
 +                        "-      decrease verbosity\n"
 +                        "c      Send command to first matching filter supporting it\n"
 +                        "C      Send/Que command to all matching filters\n"
 +                        "D      cycle through available debug modes\n"
 +                        "h      dump packets/hex press to cycle through the 3 states\n"
 +                        "q      quit\n"
 +                        "s      Show QP histogram\n"
 +        );
 +    }
 +    return 0;
 +}
 +
 +#if HAVE_PTHREADS
 +static void *input_thread(void *arg)
 +{
 +    InputFile *f = arg;
 +    unsigned flags = f->non_blocking ? AV_THREAD_MESSAGE_NONBLOCK : 0;
 +    int ret = 0;
 +
 +    while (1) {
 +        AVPacket pkt;
 +        ret = av_read_frame(f->ctx, &pkt);
 +
 +        if (ret == AVERROR(EAGAIN)) {
 +            av_usleep(10000);
 +            continue;
 +        }
 +        if (ret < 0) {
 +            av_thread_message_queue_set_err_recv(f->in_thread_queue, ret);
 +            break;
 +        }
 +        av_dup_packet(&pkt);
 +        ret = av_thread_message_queue_send(f->in_thread_queue, &pkt, flags);
 +        if (flags && ret == AVERROR(EAGAIN)) {
 +            flags = 0;
 +            ret = av_thread_message_queue_send(f->in_thread_queue, &pkt, flags);
 +            av_log(f->ctx, AV_LOG_WARNING,
 +                   "Thread message queue blocking; consider raising the "
 +                   "thread_queue_size option (current value: %d)\n",
 +                   f->thread_queue_size);
 +        }
 +        if (ret < 0) {
 +            if (ret != AVERROR_EOF)
 +                av_log(f->ctx, AV_LOG_ERROR,
 +                       "Unable to send packet to main thread: %s\n",
 +                       av_err2str(ret));
 +            av_free_packet(&pkt);
 +            av_thread_message_queue_set_err_recv(f->in_thread_queue, ret);
 +            break;
 +        }
 +    }
 +
 +    return NULL;
 +}
 +
 +static void free_input_threads(void)
 +{
 +    int i;
 +
 +    for (i = 0; i < nb_input_files; i++) {
 +        InputFile *f = input_files[i];
 +        AVPacket pkt;
 +
 +        if (!f || !f->in_thread_queue)
 +            continue;
 +        av_thread_message_queue_set_err_send(f->in_thread_queue, AVERROR_EOF);
 +        while (av_thread_message_queue_recv(f->in_thread_queue, &pkt, 0) >= 0)
 +            av_free_packet(&pkt);
 +
 +        pthread_join(f->thread, NULL);
 +        f->joined = 1;
 +        av_thread_message_queue_free(&f->in_thread_queue);
 +    }
 +}
 +
 +static int init_input_threads(void)
 +{
 +    int i, ret;
 +
 +    if (nb_input_files == 1)
 +        return 0;
 +
 +    for (i = 0; i < nb_input_files; i++) {
 +        InputFile *f = input_files[i];
 +
 +        if (f->ctx->pb ? !f->ctx->pb->seekable :
 +            strcmp(f->ctx->iformat->name, "lavfi"))
 +            f->non_blocking = 1;
 +        ret = av_thread_message_queue_alloc(&f->in_thread_queue,
 +                                            f->thread_queue_size, sizeof(AVPacket));
 +        if (ret < 0)
 +            return ret;
 +
 +        if ((ret = pthread_create(&f->thread, NULL, input_thread, f))) {
 +            av_log(NULL, AV_LOG_ERROR, "pthread_create failed: %s. Try to increase `ulimit -v` or decrease `ulimit -s`.\n", strerror(ret));
 +            av_thread_message_queue_free(&f->in_thread_queue);
 +            return AVERROR(ret);
 +        }
 +    }
 +    return 0;
 +}
 +
 +static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
 +{
 +    return av_thread_message_queue_recv(f->in_thread_queue, pkt,
 +                                        f->non_blocking ?
 +                                        AV_THREAD_MESSAGE_NONBLOCK : 0);
 +}
 +#endif
 +
 +static int get_input_packet(InputFile *f, AVPacket *pkt)
 +{
 +    if (f->rate_emu) {
 +        int i;
 +        for (i = 0; i < f->nb_streams; i++) {
 +            InputStream *ist = input_streams[f->ist_index + i];
 +            int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
 +            int64_t now = av_gettime_relative() - ist->start;
 +            if (pts > now)
 +                return AVERROR(EAGAIN);
 +        }
 +    }
 +
 +#if HAVE_PTHREADS
 +    if (nb_input_files > 1)
 +        return get_input_packet_mt(f, pkt);
 +#endif
 +    return av_read_frame(f->ctx, pkt);
 +}
 +
 +static int got_eagain(void)
 +{
 +    int i;
 +    for (i = 0; i < nb_output_streams; i++)
 +        if (output_streams[i]->unavailable)
 +            return 1;
 +    return 0;
 +}
 +
 +static void reset_eagain(void)
 +{
 +    int i;
 +    for (i = 0; i < nb_input_files; i++)
 +        input_files[i]->eagain = 0;
 +    for (i = 0; i < nb_output_streams; i++)
 +        output_streams[i]->unavailable = 0;
 +}
 +
 +/*
 + * Return
 + * - 0 -- one packet was read and processed
 + * - AVERROR(EAGAIN) -- no packets were available for selected file,
 + *   this function should be called again
 + * - AVERROR_EOF -- this function should not be called again
 + */
 +static int process_input(int file_index)
 +{
 +    InputFile *ifile = input_files[file_index];
 +    AVFormatContext *is;
 +    InputStream *ist;
 +    AVPacket pkt;
 +    int ret, i, j;
 +
 +    is  = ifile->ctx;
 +    ret = get_input_packet(ifile, &pkt);
 +
 +    if (ret == AVERROR(EAGAIN)) {
 +        ifile->eagain = 1;
 +        return ret;
 +    }
 +    if (ret < 0) {
 +        if (ret != AVERROR_EOF) {
 +            print_error(is->filename, ret);
 +            if (exit_on_error)
 +                exit_program(1);
 +        }
 +
 +        for (i = 0; i < ifile->nb_streams; i++) {
 +            ist = input_streams[ifile->ist_index + i];
 +            if (ist->decoding_needed) {
 +                ret = process_input_packet(ist, NULL);
 +                if (ret>0)
 +                    return 0;
 +            }
 +
 +            /* mark all outputs that don't go through lavfi as finished */
 +            for (j = 0; j < nb_output_streams; j++) {
 +                OutputStream *ost = output_streams[j];
 +
 +                if (ost->source_index == ifile->ist_index + i &&
 +                    (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
 +                    finish_output_stream(ost);
 +            }
 +        }
 +
 +        ifile->eof_reached = 1;
 +        return AVERROR(EAGAIN);
 +    }
 +
 +    reset_eagain();
 +
 +    if (do_pkt_dump) {
 +        av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
 +                         is->streams[pkt.stream_index]);
 +    }
 +    /* the following test is needed in case new streams appear
 +       dynamically in stream : we ignore them */
 +    if (pkt.stream_index >= ifile->nb_streams) {
 +        report_new_stream(file_index, &pkt);
 +        goto discard_packet;
 +    }
 +
 +    ist = input_streams[ifile->ist_index + pkt.stream_index];
 +
 +    ist->data_size += pkt.size;
 +    ist->nb_packets++;
 +
 +    if (ist->discard)
 +        goto discard_packet;
 +
 +    if (debug_ts) {
 +        av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
 +               "next_dts:%s next_dts_time:%s next_pts:%s next_pts_time:%s pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s off:%s off_time:%s\n",
 +               ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->dec_ctx->codec_type),
 +               av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &AV_TIME_BASE_Q),
 +               av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &AV_TIME_BASE_Q),
 +               av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
 +               av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
 +               av_ts2str(input_files[ist->file_index]->ts_offset),
 +               av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
 +    }
 +
 +    if(!ist->wrap_correction_done && is->start_time != AV_NOPTS_VALUE && ist->st->pts_wrap_bits < 64){
 +        int64_t stime, stime2;
 +        // Correcting starttime based on the enabled streams
 +        // FIXME this ideally should be done before the first use of starttime but we do not know which are the enabled streams at that point.
 +        //       so we instead do it here as part of discontinuity handling
 +        if (   ist->next_dts == AV_NOPTS_VALUE
 +            && ifile->ts_offset == -is->start_time
 +            && (is->iformat->flags & AVFMT_TS_DISCONT)) {
 +            int64_t new_start_time = INT64_MAX;
 +            for (i=0; i<is->nb_streams; i++) {
 +                AVStream *st = is->streams[i];
 +                if(st->discard == AVDISCARD_ALL || st->start_time == AV_NOPTS_VALUE)
 +                    continue;
 +                new_start_time = FFMIN(new_start_time, av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q));
 +            }
 +            if (new_start_time > is->start_time) {
 +                av_log(is, AV_LOG_VERBOSE, "Correcting start time by %"PRId64"\n", new_start_time - is->start_time);
 +                ifile->ts_offset = -new_start_time;
 +            }
 +        }
 +
 +        stime = av_rescale_q(is->start_time, AV_TIME_BASE_Q, ist->st->time_base);
 +        stime2= stime + (1ULL<<ist->st->pts_wrap_bits);
 +        ist->wrap_correction_done = 1;
 +
 +        if(stime2 > stime && pkt.dts != AV_NOPTS_VALUE && pkt.dts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
 +            pkt.dts -= 1ULL<<ist->st->pts_wrap_bits;
 +            ist->wrap_correction_done = 0;
 +        }
 +        if(stime2 > stime && pkt.pts != AV_NOPTS_VALUE && pkt.pts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
 +            pkt.pts -= 1ULL<<ist->st->pts_wrap_bits;
 +            ist->wrap_correction_done = 0;
 +        }
 +    }
 +
 +    /* add the stream-global side data to the first packet */
 +    if (ist->nb_packets == 1) {
 +        if (ist->st->nb_side_data)
 +            av_packet_split_side_data(&pkt);
 +        for (i = 0; i < ist->st->nb_side_data; i++) {
 +            AVPacketSideData *src_sd = &ist->st->side_data[i];
 +            uint8_t *dst_data;
 +
 +            if (av_packet_get_side_data(&pkt, src_sd->type, NULL))
 +                continue;
 +            if (ist->autorotate && src_sd->type == AV_PKT_DATA_DISPLAYMATRIX)
 +                continue;
 +
 +            dst_data = av_packet_new_side_data(&pkt, src_sd->type, src_sd->size);
 +            if (!dst_data)
 +                exit_program(1);
 +
 +            memcpy(dst_data, src_sd->data, src_sd->size);
 +        }
 +    }
 +
 +    if (pkt.dts != AV_NOPTS_VALUE)
 +        pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
 +    if (pkt.pts != AV_NOPTS_VALUE)
 +        pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
 +
 +    if (pkt.pts != AV_NOPTS_VALUE)
 +        pkt.pts *= ist->ts_scale;
 +    if (pkt.dts != AV_NOPTS_VALUE)
 +        pkt.dts *= ist->ts_scale;
 +
 +    if ((ist->dec_ctx->codec_type == AVMEDIA_TYPE_VIDEO ||
 +         ist->dec_ctx->codec_type == AVMEDIA_TYPE_AUDIO) &&
 +        pkt.dts != AV_NOPTS_VALUE && ist->next_dts == AV_NOPTS_VALUE && !copy_ts
 +        && (is->iformat->flags & AVFMT_TS_DISCONT) && ifile->last_ts != AV_NOPTS_VALUE) {
 +        int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
 +        int64_t delta   = pkt_dts - ifile->last_ts;
 +        if (delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
 +            delta >  1LL*dts_delta_threshold*AV_TIME_BASE){
 +            ifile->ts_offset -= delta;
 +            av_log(NULL, AV_LOG_DEBUG,
 +                   "Inter stream timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
 +                   delta, ifile->ts_offset);
 +            pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
 +            if (pkt.pts != AV_NOPTS_VALUE)
 +                pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
 +        }
 +    }
 +
 +    if ((ist->dec_ctx->codec_type == AVMEDIA_TYPE_VIDEO ||
 +         ist->dec_ctx->codec_type == AVMEDIA_TYPE_AUDIO) &&
 +         pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
 +        !copy_ts) {
 +        int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
 +        int64_t delta   = pkt_dts - ist->next_dts;
 +        if (is->iformat->flags & AVFMT_TS_DISCONT) {
 +            if (delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
 +                delta >  1LL*dts_delta_threshold*AV_TIME_BASE ||
 +                pkt_dts + AV_TIME_BASE/10 < FFMAX(ist->pts, ist->dts)) {
 +                ifile->ts_offset -= delta;
 +                av_log(NULL, AV_LOG_DEBUG,
 +                       "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
 +                       delta, ifile->ts_offset);
 +                pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
 +                if (pkt.pts != AV_NOPTS_VALUE)
 +                    pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
 +            }
 +        } else {
 +            if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
 +                 delta >  1LL*dts_error_threshold*AV_TIME_BASE) {
 +                av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
 +                pkt.dts = AV_NOPTS_VALUE;
 +            }
 +            if (pkt.pts != AV_NOPTS_VALUE){
 +                int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
 +                delta   = pkt_pts - ist->next_dts;
 +                if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
 +                     delta >  1LL*dts_error_threshold*AV_TIME_BASE) {
 +                    av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
 +                    pkt.pts = AV_NOPTS_VALUE;
 +                }
 +            }
 +        }
 +    }
 +
 +    if (pkt.dts != AV_NOPTS_VALUE)
 +        ifile->last_ts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
 +
 +    if (debug_ts) {
 +        av_log(NULL, AV_LOG_INFO, "demuxer+ffmpeg -> ist_index:%d type:%s pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s off:%s off_time:%s\n",
 +               ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->dec_ctx->codec_type),
 +               av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
 +               av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
 +               av_ts2str(input_files[ist->file_index]->ts_offset),
 +               av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
 +    }
 +
 +    sub2video_heartbeat(ist, pkt.pts);
 +
 +    process_input_packet(ist, &pkt);
 +
 +discard_packet:
 +    av_free_packet(&pkt);
 +
 +    return 0;
 +}
 +
 +/**
 + * Perform a step of transcoding for the specified filter graph.
 + *
 + * @param[in]  graph     filter graph to consider
 + * @param[out] best_ist  input stream where a frame would allow to continue
 + * @return  0 for success, <0 for error
 + */
 +static int transcode_from_filter(FilterGraph *graph, InputStream **best_ist)
 +{
 +    int i, ret;
 +    int nb_requests, nb_requests_max = 0;
 +    InputFilter *ifilter;
 +    InputStream *ist;
 +
 +    *best_ist = NULL;
 +    ret = avfilter_graph_request_oldest(graph->graph);
 +    if (ret >= 0)
 +        return reap_filters(0);
 +
 +    if (ret == AVERROR_EOF) {
 +        ret = reap_filters(1);
 +        for (i = 0; i < graph->nb_outputs; i++)
 +            close_output_stream(graph->outputs[i]->ost);
 +        return ret;
 +    }
 +    if (ret != AVERROR(EAGAIN))
 +        return ret;
 +
 +    for (i = 0; i < graph->nb_inputs; i++) {
 +        ifilter = graph->inputs[i];
 +        ist = ifilter->ist;
 +        if (input_files[ist->file_index]->eagain ||
 +            input_files[ist->file_index]->eof_reached)
 +            continue;
 +        nb_requests = av_buffersrc_get_nb_failed_requests(ifilter->filter);
 +        if (nb_requests > nb_requests_max) {
 +            nb_requests_max = nb_requests;
 +            *best_ist = ist;
 +        }
 +    }
 +
 +    if (!*best_ist)
 +        for (i = 0; i < graph->nb_outputs; i++)
 +            graph->outputs[i]->ost->unavailable = 1;
 +
 +    return 0;
 +}
 +
 +/**
 + * Run a single step of transcoding.
 + *
 + * @return  0 for success, <0 for error
 + */
 +static int transcode_step(void)
 +{
 +    OutputStream *ost;
 +    InputStream  *ist;
 +    int ret;
 +
 +    ost = choose_output();
 +    if (!ost) {
 +        if (got_eagain()) {
 +            reset_eagain();
 +            av_usleep(10000);
 +            return 0;
 +        }
 +        av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from, finishing.\n");
 +        return AVERROR_EOF;
 +    }
 +
 +    if (ost->filter) {
 +        if ((ret = transcode_from_filter(ost->filter->graph, &ist)) < 0)
 +            return ret;
 +        if (!ist)
 +            return 0;
 +    } else {
 +        av_assert0(ost->source_index >= 0);
 +        ist = input_streams[ost->source_index];
 +    }
 +
 +    ret = process_input(ist->file_index);
 +    if (ret == AVERROR(EAGAIN)) {
 +        if (input_files[ist->file_index]->eagain)
 +            ost->unavailable = 1;
 +        return 0;
 +    }
 +
 +    if (ret < 0)
 +        return ret == AVERROR_EOF ? 0 : ret;
 +
 +    return reap_filters(0);
 +}
 +
 +/*
 + * The following code is the main loop of the file converter
 + */
 +static int transcode(void)
 +{
 +    int ret, i;
 +    AVFormatContext *os;
 +    OutputStream *ost;
 +    InputStream *ist;
 +    int64_t timer_start;
 +
 +    ret = transcode_init();
 +    if (ret < 0)
 +        goto fail;
 +
 +    if (stdin_interaction) {
 +        av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
 +    }
 +
 +    timer_start = av_gettime_relative();
 +
 +#if HAVE_PTHREADS
 +    if ((ret = init_input_threads()) < 0)
 +        goto fail;
 +#endif
 +
 +    while (!received_sigterm) {
 +        int64_t cur_time= av_gettime_relative();
 +
 +        /* if 'q' pressed, exits */
 +        if (stdin_interaction)
 +            if (check_keyboard_interaction(cur_time) < 0)
 +                break;
 +
 +        /* check if there's any stream where output is still needed */
 +        if (!need_output()) {
 +            av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
 +            break;
 +        }
 +
 +        ret = transcode_step();
 +        if (ret < 0) {
 +            if (ret == AVERROR_EOF || ret == AVERROR(EAGAIN)) {
 +                continue;
 +            } else {
 +                char errbuf[128];
 +                av_strerror(ret, errbuf, sizeof(errbuf));
 +
 +                av_log(NULL, AV_LOG_ERROR, "Error while filtering: %s\n", errbuf);
 +                break;
 +            }
 +        }
 +
 +        /* dump report by using the output first video and audio streams */
 +        print_report(0, timer_start, cur_time);
 +    }
 +#if HAVE_PTHREADS
 +    free_input_threads();
 +#endif
 +
 +    /* at the end of stream, we must flush the decoder buffers */
 +    for (i = 0; i < nb_input_streams; i++) {
 +        ist = input_streams[i];
 +        if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
 +            process_input_packet(ist, NULL);
 +        }
 +    }
 +    flush_encoders();
 +
 +    term_exit();
 +
 +    /* write the trailer if needed and close file */
 +    for (i = 0; i < nb_output_files; i++) {
 +        os = output_files[i]->ctx;
 +        av_write_trailer(os);
 +    }
 +
 +    /* dump report by using the first video and audio streams */
 +    print_report(1, timer_start, av_gettime_relative());
 +
 +    /* close each encoder */
 +    for (i = 0; i < nb_output_streams; i++) {
 +        ost = output_streams[i];
 +        if (ost->encoding_needed) {
 +            av_freep(&ost->enc_ctx->stats_in);
 +        }
 +    }
 +
 +    /* close each decoder */
 +    for (i = 0; i < nb_input_streams; i++) {
 +        ist = input_streams[i];
 +        if (ist->decoding_needed) {
 +            avcodec_close(ist->dec_ctx);
 +            if (ist->hwaccel_uninit)
 +                ist->hwaccel_uninit(ist->dec_ctx);
 +        }
 +    }
 +
 +    /* finished ! */
 +    ret = 0;
 +
 + fail:
 +#if HAVE_PTHREADS
 +    free_input_threads();
 +#endif
 +
 +    if (output_streams) {
 +        for (i = 0; i < nb_output_streams; i++) {
 +            ost = output_streams[i];
 +            if (ost) {
 +                if (ost->logfile) {
 +                    fclose(ost->logfile);
 +                    ost->logfile = NULL;
 +                }
 +                av_freep(&ost->forced_kf_pts);
 +                av_freep(&ost->apad);
 +                av_freep(&ost->disposition);
 +                av_dict_free(&ost->encoder_opts);
 +                av_dict_free(&ost->swr_opts);
 +                av_dict_free(&ost->resample_opts);
 +                av_dict_free(&ost->bsf_args);
 +            }
 +        }
 +    }
 +    return ret;
 +}
 +
 +
 +static int64_t getutime(void)
 +{
 +#if HAVE_GETRUSAGE
 +    struct rusage rusage;
 +
 +    getrusage(RUSAGE_SELF, &rusage);
 +    return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
 +#elif HAVE_GETPROCESSTIMES
 +    HANDLE proc;
 +    FILETIME c, e, k, u;
 +    proc = GetCurrentProcess();
 +    GetProcessTimes(proc, &c, &e, &k, &u);
 +    return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
 +#else
 +    return av_gettime_relative();
 +#endif
 +}
 +
 +static int64_t getmaxrss(void)
 +{
 +#if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
 +    struct rusage rusage;
 +    getrusage(RUSAGE_SELF, &rusage);
 +    return (int64_t)rusage.ru_maxrss * 1024;
 +#elif HAVE_GETPROCESSMEMORYINFO
 +    HANDLE proc;
 +    PROCESS_MEMORY_COUNTERS memcounters;
 +    proc = GetCurrentProcess();
 +    memcounters.cb = sizeof(memcounters);
 +    GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
 +    return memcounters.PeakPagefileUsage;
 +#else
 +    return 0;
 +#endif
 +}
 +
 +static void log_callback_null(void *ptr, int level, const char *fmt, va_list vl)
 +{
 +}
 +
 +int main(int argc, char **argv)
 +{
 +    int ret;
 +    int64_t ti;
 +
 +    register_exit(ffmpeg_cleanup);
 +
 +    setvbuf(stderr,NULL,_IONBF,0); /* win32 runtime needs this */
 +
 +    av_log_set_flags(AV_LOG_SKIP_REPEATED);
 +    parse_loglevel(argc, argv, options);
 +
 +    if(argc>1 && !strcmp(argv[1], "-d")){
 +        run_as_daemon=1;
 +        av_log_set_callback(log_callback_null);
 +        argc--;
 +        argv++;
 +    }
 +
 +    avcodec_register_all();
 +#if CONFIG_AVDEVICE
 +    avdevice_register_all();
 +#endif
 +    avfilter_register_all();
 +    av_register_all();
 +    avformat_network_init();
 +
 +    show_banner(argc, argv, options);
 +
 +    term_init();
 +
 +    /* parse options and open all input/output files */
 +    ret = ffmpeg_parse_options(argc, argv);
 +    if (ret < 0)
 +        exit_program(1);
 +
 +    if (nb_output_files <= 0 && nb_input_files == 0) {
 +        show_usage();
 +        av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
 +        exit_program(1);
 +    }
 +
 +    /* file converter / grab */
 +    if (nb_output_files <= 0) {
 +        av_log(NULL, AV_LOG_FATAL, "At least one output file must be specified\n");
 +        exit_program(1);
 +    }
 +
 +//     if (nb_input_files == 0) {
 +//         av_log(NULL, AV_LOG_FATAL, "At least one input file must be specified\n");
 +//         exit_program(1);
 +//     }
 +
 +    current_time = ti = getutime();
 +    if (transcode() < 0)
 +        exit_program(1);
 +    ti = getutime() - ti;
 +    if (do_benchmark) {
 +        av_log(NULL, AV_LOG_INFO, "bench: utime=%0.3fs\n", ti / 1000000.0);
 +    }
 +    av_log(NULL, AV_LOG_DEBUG, "%"PRIu64" frames successfully decoded, %"PRIu64" decoding errors\n",
 +           decode_error_stat[0], decode_error_stat[1]);
 +    if ((decode_error_stat[0] + decode_error_stat[1]) * max_error_rate < decode_error_stat[1])
 +        exit_program(69);
 +
 +    exit_program(received_nb_signals ? 255 : main_return_code);
 +    return main_return_code;
 +}
diff --cc ffmpeg_filter.c
index 950e4d0,0000000..f374876
mode 100644,000000..100644
--- /dev/null
@@@ -1,1055 -1,0 +1,1055 @@@
-              SWS_BILINEAR + ((ist->dec_ctx->flags&CODEC_FLAG_BITEXACT) ? SWS_BITEXACT:0));
 +/*
 + * ffmpeg filter configuration
 + *
 + * This file is part of FFmpeg.
 + *
 + * FFmpeg is free software; you can redistribute it and/or
 + * modify it under the terms of the GNU Lesser General Public
 + * License as published by the Free Software Foundation; either
 + * version 2.1 of the License, or (at your option) any later version.
 + *
 + * FFmpeg is distributed in the hope that it will be useful,
 + * but WITHOUT ANY WARRANTY; without even the implied warranty of
 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 + * Lesser General Public License for more details.
 + *
 + * You should have received a copy of the GNU Lesser General Public
 + * License along with FFmpeg; if not, write to the Free Software
 + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 + */
 +
 +#include <stdint.h>
 +
 +#include "ffmpeg.h"
 +
 +#include "libavfilter/avfilter.h"
 +#include "libavfilter/buffersink.h"
 +
 +#include "libavresample/avresample.h"
 +
 +#include "libavutil/avassert.h"
 +#include "libavutil/avstring.h"
 +#include "libavutil/bprint.h"
 +#include "libavutil/channel_layout.h"
 +#include "libavutil/display.h"
 +#include "libavutil/opt.h"
 +#include "libavutil/pixdesc.h"
 +#include "libavutil/pixfmt.h"
 +#include "libavutil/imgutils.h"
 +#include "libavutil/samplefmt.h"
 +
 +enum AVPixelFormat choose_pixel_fmt(AVStream *st, AVCodecContext *enc_ctx, AVCodec *codec, enum AVPixelFormat target)
 +{
 +    if (codec && codec->pix_fmts) {
 +        const enum AVPixelFormat *p = codec->pix_fmts;
 +        const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(target);
 +        int has_alpha = desc ? desc->nb_components % 2 == 0 : 0;
 +        enum AVPixelFormat best= AV_PIX_FMT_NONE;
 +        static const enum AVPixelFormat mjpeg_formats[] =
 +            { AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_NONE };
 +        static const enum AVPixelFormat ljpeg_formats[] =
 +            { AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUV420P,
 +              AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_BGRA, AV_PIX_FMT_NONE };
 +
 +        if (enc_ctx->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
 +            if (enc_ctx->codec_id == AV_CODEC_ID_MJPEG) {
 +                p = mjpeg_formats;
 +            } else if (enc_ctx->codec_id == AV_CODEC_ID_LJPEG) {
 +                p =ljpeg_formats;
 +            }
 +        }
 +        for (; *p != AV_PIX_FMT_NONE; p++) {
 +            best= avcodec_find_best_pix_fmt_of_2(best, *p, target, has_alpha, NULL);
 +            if (*p == target)
 +                break;
 +        }
 +        if (*p == AV_PIX_FMT_NONE) {
 +            if (target != AV_PIX_FMT_NONE)
 +                av_log(NULL, AV_LOG_WARNING,
 +                       "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
 +                       av_get_pix_fmt_name(target),
 +                       codec->name,
 +                       av_get_pix_fmt_name(best));
 +            return best;
 +        }
 +    }
 +    return target;
 +}
 +
 +void choose_sample_fmt(AVStream *st, AVCodec *codec)
 +{
 +    if (codec && codec->sample_fmts) {
 +        const enum AVSampleFormat *p = codec->sample_fmts;
 +        for (; *p != -1; p++) {
 +            if (*p == st->codec->sample_fmt)
 +                break;
 +        }
 +        if (*p == -1) {
 +            if((codec->capabilities & CODEC_CAP_LOSSLESS) && av_get_sample_fmt_name(st->codec->sample_fmt) > av_get_sample_fmt_name(codec->sample_fmts[0]))
 +                av_log(NULL, AV_LOG_ERROR, "Conversion will not be lossless.\n");
 +            if(av_get_sample_fmt_name(st->codec->sample_fmt))
 +            av_log(NULL, AV_LOG_WARNING,
 +                   "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
 +                   av_get_sample_fmt_name(st->codec->sample_fmt),
 +                   codec->name,
 +                   av_get_sample_fmt_name(codec->sample_fmts[0]));
 +            st->codec->sample_fmt = codec->sample_fmts[0];
 +        }
 +    }
 +}
 +
 +static char *choose_pix_fmts(OutputStream *ost)
 +{
 +    AVDictionaryEntry *strict_dict = av_dict_get(ost->encoder_opts, "strict", NULL, 0);
 +    if (strict_dict)
 +        // used by choose_pixel_fmt() and below
 +        av_opt_set(ost->enc_ctx, "strict", strict_dict->value, 0);
 +
 +     if (ost->keep_pix_fmt) {
 +        if (ost->filter)
 +            avfilter_graph_set_auto_convert(ost->filter->graph->graph,
 +                                            AVFILTER_AUTO_CONVERT_NONE);
 +        if (ost->enc_ctx->pix_fmt == AV_PIX_FMT_NONE)
 +            return NULL;
 +        return av_strdup(av_get_pix_fmt_name(ost->enc_ctx->pix_fmt));
 +    }
 +    if (ost->enc_ctx->pix_fmt != AV_PIX_FMT_NONE) {
 +        return av_strdup(av_get_pix_fmt_name(choose_pixel_fmt(ost->st, ost->enc_ctx, ost->enc, ost->enc_ctx->pix_fmt)));
 +    } else if (ost->enc && ost->enc->pix_fmts) {
 +        const enum AVPixelFormat *p;
 +        AVIOContext *s = NULL;
 +        uint8_t *ret;
 +        int len;
 +
 +        if (avio_open_dyn_buf(&s) < 0)
 +            exit_program(1);
 +
 +        p = ost->enc->pix_fmts;
 +        if (ost->enc_ctx->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
 +            if (ost->enc_ctx->codec_id == AV_CODEC_ID_MJPEG) {
 +                p = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_NONE };
 +            } else if (ost->enc_ctx->codec_id == AV_CODEC_ID_LJPEG) {
 +                p = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUV420P,
 +                                                    AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_BGRA, AV_PIX_FMT_NONE };
 +            }
 +        }
 +
 +        for (; *p != AV_PIX_FMT_NONE; p++) {
 +            const char *name = av_get_pix_fmt_name(*p);
 +            avio_printf(s, "%s|", name);
 +        }
 +        len = avio_close_dyn_buf(s, &ret);
 +        ret[len - 1] = 0;
 +        return ret;
 +    } else
 +        return NULL;
 +}
 +
 +/* Define a function for building a string containing a list of
 + * allowed formats. */
 +#define DEF_CHOOSE_FORMAT(type, var, supported_list, none, get_name)           \
 +static char *choose_ ## var ## s(OutputStream *ost)                            \
 +{                                                                              \
 +    if (ost->enc_ctx->var != none) {                                           \
 +        get_name(ost->enc_ctx->var);                                           \
 +        return av_strdup(name);                                                \
 +    } else if (ost->enc && ost->enc->supported_list) {                         \
 +        const type *p;                                                         \
 +        AVIOContext *s = NULL;                                                 \
 +        uint8_t *ret;                                                          \
 +        int len;                                                               \
 +                                                                               \
 +        if (avio_open_dyn_buf(&s) < 0)                                         \
 +            exit_program(1);                                                           \
 +                                                                               \
 +        for (p = ost->enc->supported_list; *p != none; p++) {                  \
 +            get_name(*p);                                                      \
 +            avio_printf(s, "%s|", name);                                       \
 +        }                                                                      \
 +        len = avio_close_dyn_buf(s, &ret);                                     \
 +        ret[len - 1] = 0;                                                      \
 +        return ret;                                                            \
 +    } else                                                                     \
 +        return NULL;                                                           \
 +}
 +
 +// DEF_CHOOSE_FORMAT(enum AVPixelFormat, pix_fmt, pix_fmts, AV_PIX_FMT_NONE,
 +//                   GET_PIX_FMT_NAME)
 +
 +DEF_CHOOSE_FORMAT(enum AVSampleFormat, sample_fmt, sample_fmts,
 +                  AV_SAMPLE_FMT_NONE, GET_SAMPLE_FMT_NAME)
 +
 +DEF_CHOOSE_FORMAT(int, sample_rate, supported_samplerates, 0,
 +                  GET_SAMPLE_RATE_NAME)
 +
 +DEF_CHOOSE_FORMAT(uint64_t, channel_layout, channel_layouts, 0,
 +                  GET_CH_LAYOUT_NAME)
 +
 +FilterGraph *init_simple_filtergraph(InputStream *ist, OutputStream *ost)
 +{
 +    FilterGraph *fg = av_mallocz(sizeof(*fg));
 +
 +    if (!fg)
 +        exit_program(1);
 +    fg->index = nb_filtergraphs;
 +
 +    GROW_ARRAY(fg->outputs, fg->nb_outputs);
 +    if (!(fg->outputs[0] = av_mallocz(sizeof(*fg->outputs[0]))))
 +        exit_program(1);
 +    fg->outputs[0]->ost   = ost;
 +    fg->outputs[0]->graph = fg;
 +
 +    ost->filter = fg->outputs[0];
 +
 +    GROW_ARRAY(fg->inputs, fg->nb_inputs);
 +    if (!(fg->inputs[0] = av_mallocz(sizeof(*fg->inputs[0]))))
 +        exit_program(1);
 +    fg->inputs[0]->ist   = ist;
 +    fg->inputs[0]->graph = fg;
 +
 +    GROW_ARRAY(ist->filters, ist->nb_filters);
 +    ist->filters[ist->nb_filters - 1] = fg->inputs[0];
 +
 +    GROW_ARRAY(filtergraphs, nb_filtergraphs);
 +    filtergraphs[nb_filtergraphs - 1] = fg;
 +
 +    return fg;
 +}
 +
 +static void init_input_filter(FilterGraph *fg, AVFilterInOut *in)
 +{
 +    InputStream *ist = NULL;
 +    enum AVMediaType type = avfilter_pad_get_type(in->filter_ctx->input_pads, in->pad_idx);
 +    int i;
 +
 +    // TODO: support other filter types
 +    if (type != AVMEDIA_TYPE_VIDEO && type != AVMEDIA_TYPE_AUDIO) {
 +        av_log(NULL, AV_LOG_FATAL, "Only video and audio filters supported "
 +               "currently.\n");
 +        exit_program(1);
 +    }
 +
 +    if (in->name) {
 +        AVFormatContext *s;
 +        AVStream       *st = NULL;
 +        char *p;
 +        int file_idx = strtol(in->name, &p, 0);
 +
 +        if (file_idx < 0 || file_idx >= nb_input_files) {
 +            av_log(NULL, AV_LOG_FATAL, "Invalid file index %d in filtergraph description %s.\n",
 +                   file_idx, fg->graph_desc);
 +            exit_program(1);
 +        }
 +        s = input_files[file_idx]->ctx;
 +
 +        for (i = 0; i < s->nb_streams; i++) {
 +            enum AVMediaType stream_type = s->streams[i]->codec->codec_type;
 +            if (stream_type != type &&
 +                !(stream_type == AVMEDIA_TYPE_SUBTITLE &&
 +                  type == AVMEDIA_TYPE_VIDEO /* sub2video hack */))
 +                continue;
 +            if (check_stream_specifier(s, s->streams[i], *p == ':' ? p + 1 : p) == 1) {
 +                st = s->streams[i];
 +                break;
 +            }
 +        }
 +        if (!st) {
 +            av_log(NULL, AV_LOG_FATAL, "Stream specifier '%s' in filtergraph description %s "
 +                   "matches no streams.\n", p, fg->graph_desc);
 +            exit_program(1);
 +        }
 +        ist = input_streams[input_files[file_idx]->ist_index + st->index];
 +    } else {
 +        /* find the first unused stream of corresponding type */
 +        for (i = 0; i < nb_input_streams; i++) {
 +            ist = input_streams[i];
 +            if (ist->dec_ctx->codec_type == type && ist->discard)
 +                break;
 +        }
 +        if (i == nb_input_streams) {
 +            av_log(NULL, AV_LOG_FATAL, "Cannot find a matching stream for "
 +                   "unlabeled input pad %d on filter %s\n", in->pad_idx,
 +                   in->filter_ctx->name);
 +            exit_program(1);
 +        }
 +    }
 +    av_assert0(ist);
 +
 +    ist->discard         = 0;
 +    ist->decoding_needed |= DECODING_FOR_FILTER;
 +    ist->st->discard = AVDISCARD_NONE;
 +
 +    GROW_ARRAY(fg->inputs, fg->nb_inputs);
 +    if (!(fg->inputs[fg->nb_inputs - 1] = av_mallocz(sizeof(*fg->inputs[0]))))
 +        exit_program(1);
 +    fg->inputs[fg->nb_inputs - 1]->ist   = ist;
 +    fg->inputs[fg->nb_inputs - 1]->graph = fg;
 +
 +    GROW_ARRAY(ist->filters, ist->nb_filters);
 +    ist->filters[ist->nb_filters - 1] = fg->inputs[fg->nb_inputs - 1];
 +}
 +
 +int init_complex_filtergraph(FilterGraph *fg)
 +{
 +    AVFilterInOut *inputs, *outputs, *cur;
 +    AVFilterGraph *graph;
 +    int ret = 0;
 +
 +    /* this graph is only used for determining the kinds of inputs
 +     * and outputs we have, and is discarded on exit from this function */
 +    graph = avfilter_graph_alloc();
 +    if (!graph)
 +        return AVERROR(ENOMEM);
 +
 +    ret = avfilter_graph_parse2(graph, fg->graph_desc, &inputs, &outputs);
 +    if (ret < 0)
 +        goto fail;
 +
 +    for (cur = inputs; cur; cur = cur->next)
 +        init_input_filter(fg, cur);
 +
 +    for (cur = outputs; cur;) {
 +        GROW_ARRAY(fg->outputs, fg->nb_outputs);
 +        fg->outputs[fg->nb_outputs - 1] = av_mallocz(sizeof(*fg->outputs[0]));
 +        if (!fg->outputs[fg->nb_outputs - 1])
 +            exit_program(1);
 +
 +        fg->outputs[fg->nb_outputs - 1]->graph   = fg;
 +        fg->outputs[fg->nb_outputs - 1]->out_tmp = cur;
 +        fg->outputs[fg->nb_outputs - 1]->type    = avfilter_pad_get_type(cur->filter_ctx->output_pads,
 +                                                                         cur->pad_idx);
 +        cur = cur->next;
 +        fg->outputs[fg->nb_outputs - 1]->out_tmp->next = NULL;
 +    }
 +
 +fail:
 +    avfilter_inout_free(&inputs);
 +    avfilter_graph_free(&graph);
 +    return ret;
 +}
 +
 +static int insert_trim(int64_t start_time, int64_t duration,
 +                       AVFilterContext **last_filter, int *pad_idx,
 +                       const char *filter_name)
 +{
 +    AVFilterGraph *graph = (*last_filter)->graph;
 +    AVFilterContext *ctx;
 +    const AVFilter *trim;
 +    enum AVMediaType type = avfilter_pad_get_type((*last_filter)->output_pads, *pad_idx);
 +    const char *name = (type == AVMEDIA_TYPE_VIDEO) ? "trim" : "atrim";
 +    int ret = 0;
 +
 +    if (duration == INT64_MAX && start_time == AV_NOPTS_VALUE)
 +        return 0;
 +
 +    trim = avfilter_get_by_name(name);
 +    if (!trim) {
 +        av_log(NULL, AV_LOG_ERROR, "%s filter not present, cannot limit "
 +               "recording time.\n", name);
 +        return AVERROR_FILTER_NOT_FOUND;
 +    }
 +
 +    ctx = avfilter_graph_alloc_filter(graph, trim, filter_name);
 +    if (!ctx)
 +        return AVERROR(ENOMEM);
 +
 +    if (duration != INT64_MAX) {
 +        ret = av_opt_set_int(ctx, "durationi", duration,
 +                                AV_OPT_SEARCH_CHILDREN);
 +    }
 +    if (ret >= 0 && start_time != AV_NOPTS_VALUE) {
 +        ret = av_opt_set_int(ctx, "starti", start_time,
 +                                AV_OPT_SEARCH_CHILDREN);
 +    }
 +    if (ret < 0) {
 +        av_log(ctx, AV_LOG_ERROR, "Error configuring the %s filter", name);
 +        return ret;
 +    }
 +
 +    ret = avfilter_init_str(ctx, NULL);
 +    if (ret < 0)
 +        return ret;
 +
 +    ret = avfilter_link(*last_filter, *pad_idx, ctx, 0);
 +    if (ret < 0)
 +        return ret;
 +
 +    *last_filter = ctx;
 +    *pad_idx     = 0;
 +    return 0;
 +}
 +
 +static int insert_filter(AVFilterContext **last_filter, int *pad_idx,
 +                         const char *filter_name, const char *args)
 +{
 +    AVFilterGraph *graph = (*last_filter)->graph;
 +    AVFilterContext *ctx;
 +    int ret;
 +
 +    ret = avfilter_graph_create_filter(&ctx,
 +                                       avfilter_get_by_name(filter_name),
 +                                       filter_name, args, NULL, graph);
 +    if (ret < 0)
 +        return ret;
 +
 +    ret = avfilter_link(*last_filter, *pad_idx, ctx, 0);
 +    if (ret < 0)
 +        return ret;
 +
 +    *last_filter = ctx;
 +    *pad_idx     = 0;
 +    return 0;
 +}
 +
 +static int configure_output_video_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
 +{
 +    char *pix_fmts;
 +    OutputStream *ost = ofilter->ost;
 +    OutputFile    *of = output_files[ost->file_index];
 +    AVCodecContext *codec = ost->enc_ctx;
 +    AVFilterContext *last_filter = out->filter_ctx;
 +    int pad_idx = out->pad_idx;
 +    int ret;
 +    char name[255];
 +
 +    snprintf(name, sizeof(name), "output stream %d:%d", ost->file_index, ost->index);
 +    ret = avfilter_graph_create_filter(&ofilter->filter,
 +                                       avfilter_get_by_name("buffersink"),
 +                                       name, NULL, NULL, fg->graph);
 +
 +    if (ret < 0)
 +        return ret;
 +
 +    if (codec->width || codec->height) {
 +        char args[255];
 +        AVFilterContext *filter;
 +
 +        snprintf(args, sizeof(args), "%d:%d:0x%X",
 +                 codec->width,
 +                 codec->height,
 +                 (unsigned)ost->sws_flags);
 +        snprintf(name, sizeof(name), "scaler for output stream %d:%d",
 +                 ost->file_index, ost->index);
 +        if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
 +                                                name, args, NULL, fg->graph)) < 0)
 +            return ret;
 +        if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
 +            return ret;
 +
 +        last_filter = filter;
 +        pad_idx = 0;
 +    }
 +
 +    if ((pix_fmts = choose_pix_fmts(ost))) {
 +        AVFilterContext *filter;
 +        snprintf(name, sizeof(name), "pixel format for output stream %d:%d",
 +                 ost->file_index, ost->index);
 +        ret = avfilter_graph_create_filter(&filter,
 +                                           avfilter_get_by_name("format"),
 +                                           "format", pix_fmts, NULL, fg->graph);
 +        av_freep(&pix_fmts);
 +        if (ret < 0)
 +            return ret;
 +        if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
 +            return ret;
 +
 +        last_filter = filter;
 +        pad_idx     = 0;
 +    }
 +
 +    if (ost->frame_rate.num && 0) {
 +        AVFilterContext *fps;
 +        char args[255];
 +
 +        snprintf(args, sizeof(args), "fps=%d/%d", ost->frame_rate.num,
 +                 ost->frame_rate.den);
 +        snprintf(name, sizeof(name), "fps for output stream %d:%d",
 +                 ost->file_index, ost->index);
 +        ret = avfilter_graph_create_filter(&fps, avfilter_get_by_name("fps"),
 +                                           name, args, NULL, fg->graph);
 +        if (ret < 0)
 +            return ret;
 +
 +        ret = avfilter_link(last_filter, pad_idx, fps, 0);
 +        if (ret < 0)
 +            return ret;
 +        last_filter = fps;
 +        pad_idx = 0;
 +    }
 +
 +    snprintf(name, sizeof(name), "trim for output stream %d:%d",
 +             ost->file_index, ost->index);
 +    ret = insert_trim(of->start_time, of->recording_time,
 +                      &last_filter, &pad_idx, name);
 +    if (ret < 0)
 +        return ret;
 +
 +
 +    if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0)
 +        return ret;
 +
 +    return 0;
 +}
 +
 +static int configure_output_audio_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
 +{
 +    OutputStream *ost = ofilter->ost;
 +    OutputFile    *of = output_files[ost->file_index];
 +    AVCodecContext *codec  = ost->enc_ctx;
 +    AVFilterContext *last_filter = out->filter_ctx;
 +    int pad_idx = out->pad_idx;
 +    char *sample_fmts, *sample_rates, *channel_layouts;
 +    char name[255];
 +    int ret;
 +
 +    snprintf(name, sizeof(name), "output stream %d:%d", ost->file_index, ost->index);
 +    ret = avfilter_graph_create_filter(&ofilter->filter,
 +                                       avfilter_get_by_name("abuffersink"),
 +                                       name, NULL, NULL, fg->graph);
 +    if (ret < 0)
 +        return ret;
 +    if ((ret = av_opt_set_int(ofilter->filter, "all_channel_counts", 1, AV_OPT_SEARCH_CHILDREN)) < 0)
 +        return ret;
 +
 +#define AUTO_INSERT_FILTER(opt_name, filter_name, arg) do {                 \
 +    AVFilterContext *filt_ctx;                                              \
 +                                                                            \
 +    av_log(NULL, AV_LOG_INFO, opt_name " is forwarded to lavfi "            \
 +           "similarly to -af " filter_name "=%s.\n", arg);                  \
 +                                                                            \
 +    ret = avfilter_graph_create_filter(&filt_ctx,                           \
 +                                       avfilter_get_by_name(filter_name),   \
 +                                       filter_name, arg, NULL, fg->graph);  \
 +    if (ret < 0)                                                            \
 +        return ret;                                                         \
 +                                                                            \
 +    ret = avfilter_link(last_filter, pad_idx, filt_ctx, 0);                 \
 +    if (ret < 0)                                                            \
 +        return ret;                                                         \
 +                                                                            \
 +    last_filter = filt_ctx;                                                 \
 +    pad_idx = 0;                                                            \
 +} while (0)
 +    if (ost->audio_channels_mapped) {
 +        int i;
 +        AVBPrint pan_buf;
 +        av_bprint_init(&pan_buf, 256, 8192);
 +        av_bprintf(&pan_buf, "0x%"PRIx64,
 +                   av_get_default_channel_layout(ost->audio_channels_mapped));
 +        for (i = 0; i < ost->audio_channels_mapped; i++)
 +            if (ost->audio_channels_map[i] != -1)
 +                av_bprintf(&pan_buf, ":c%d=c%d", i, ost->audio_channels_map[i]);
 +
 +        AUTO_INSERT_FILTER("-map_channel", "pan", pan_buf.str);
 +        av_bprint_finalize(&pan_buf, NULL);
 +    }
 +
 +    if (codec->channels && !codec->channel_layout)
 +        codec->channel_layout = av_get_default_channel_layout(codec->channels);
 +
 +    sample_fmts     = choose_sample_fmts(ost);
 +    sample_rates    = choose_sample_rates(ost);
 +    channel_layouts = choose_channel_layouts(ost);
 +    if (sample_fmts || sample_rates || channel_layouts) {
 +        AVFilterContext *format;
 +        char args[256];
 +        args[0] = 0;
 +
 +        if (sample_fmts)
 +            av_strlcatf(args, sizeof(args), "sample_fmts=%s:",
 +                            sample_fmts);
 +        if (sample_rates)
 +            av_strlcatf(args, sizeof(args), "sample_rates=%s:",
 +                            sample_rates);
 +        if (channel_layouts)
 +            av_strlcatf(args, sizeof(args), "channel_layouts=%s:",
 +                            channel_layouts);
 +
 +        av_freep(&sample_fmts);
 +        av_freep(&sample_rates);
 +        av_freep(&channel_layouts);
 +
 +        snprintf(name, sizeof(name), "audio format for output stream %d:%d",
 +                 ost->file_index, ost->index);
 +        ret = avfilter_graph_create_filter(&format,
 +                                           avfilter_get_by_name("aformat"),
 +                                           name, args, NULL, fg->graph);
 +        if (ret < 0)
 +            return ret;
 +
 +        ret = avfilter_link(last_filter, pad_idx, format, 0);
 +        if (ret < 0)
 +            return ret;
 +
 +        last_filter = format;
 +        pad_idx = 0;
 +    }
 +
 +    if (audio_volume != 256 && 0) {
 +        char args[256];
 +
 +        snprintf(args, sizeof(args), "%f", audio_volume / 256.);
 +        AUTO_INSERT_FILTER("-vol", "volume", args);
 +    }
 +
 +    if (ost->apad && of->shortest) {
 +        char args[256];
 +        int i;
 +
 +        for (i=0; i<of->ctx->nb_streams; i++)
 +            if (of->ctx->streams[i]->codec->codec_type == AVMEDIA_TYPE_VIDEO)
 +                break;
 +
 +        if (i<of->ctx->nb_streams) {
 +            snprintf(args, sizeof(args), "%s", ost->apad);
 +            AUTO_INSERT_FILTER("-apad", "apad", args);
 +        }
 +    }
 +
 +    snprintf(name, sizeof(name), "trim for output stream %d:%d",
 +             ost->file_index, ost->index);
 +    ret = insert_trim(of->start_time, of->recording_time,
 +                      &last_filter, &pad_idx, name);
 +    if (ret < 0)
 +        return ret;
 +
 +    if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0)
 +        return ret;
 +
 +    return 0;
 +}
 +
 +#define DESCRIBE_FILTER_LINK(f, inout, in)                         \
 +{                                                                  \
 +    AVFilterContext *ctx = inout->filter_ctx;                      \
 +    AVFilterPad *pads = in ? ctx->input_pads  : ctx->output_pads;  \
 +    int       nb_pads = in ? ctx->nb_inputs   : ctx->nb_outputs;   \
 +    AVIOContext *pb;                                               \
 +                                                                   \
 +    if (avio_open_dyn_buf(&pb) < 0)                                \
 +        exit_program(1);                                           \
 +                                                                   \
 +    avio_printf(pb, "%s", ctx->filter->name);                      \
 +    if (nb_pads > 1)                                               \
 +        avio_printf(pb, ":%s", avfilter_pad_get_name(pads, inout->pad_idx));\
 +    avio_w8(pb, 0);                                                \
 +    avio_close_dyn_buf(pb, &f->name);                              \
 +}
 +
 +int configure_output_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
 +{
 +    av_freep(&ofilter->name);
 +    DESCRIBE_FILTER_LINK(ofilter, out, 0);
 +
 +    if (!ofilter->ost) {
 +        av_log(NULL, AV_LOG_FATAL, "Filter %s has a unconnected output\n", ofilter->name);
 +        exit_program(1);
 +    }
 +
 +    switch (avfilter_pad_get_type(out->filter_ctx->output_pads, out->pad_idx)) {
 +    case AVMEDIA_TYPE_VIDEO: return configure_output_video_filter(fg, ofilter, out);
 +    case AVMEDIA_TYPE_AUDIO: return configure_output_audio_filter(fg, ofilter, out);
 +    default: av_assert0(0);
 +    }
 +}
 +
 +static int sub2video_prepare(InputStream *ist)
 +{
 +    AVFormatContext *avf = input_files[ist->file_index]->ctx;
 +    int i, w, h;
 +
 +    /* Compute the size of the canvas for the subtitles stream.
 +       If the subtitles codec has set a size, use it. Otherwise use the
 +       maximum dimensions of the video streams in the same file. */
 +    w = ist->dec_ctx->width;
 +    h = ist->dec_ctx->height;
 +    if (!(w && h)) {
 +        for (i = 0; i < avf->nb_streams; i++) {
 +            if (avf->streams[i]->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
 +                w = FFMAX(w, avf->streams[i]->codec->width);
 +                h = FFMAX(h, avf->streams[i]->codec->height);
 +            }
 +        }
 +        if (!(w && h)) {
 +            w = FFMAX(w, 720);
 +            h = FFMAX(h, 576);
 +        }
 +        av_log(avf, AV_LOG_INFO, "sub2video: using %dx%d canvas\n", w, h);
 +    }
 +    ist->sub2video.w = ist->dec_ctx->width  = ist->resample_width  = w;
 +    ist->sub2video.h = ist->dec_ctx->height = ist->resample_height = h;
 +
 +    /* rectangles are AV_PIX_FMT_PAL8, but we have no guarantee that the
 +       palettes for all rectangles are identical or compatible */
 +    ist->resample_pix_fmt = ist->dec_ctx->pix_fmt = AV_PIX_FMT_RGB32;
 +
 +    ist->sub2video.frame = av_frame_alloc();
 +    if (!ist->sub2video.frame)
 +        return AVERROR(ENOMEM);
 +    ist->sub2video.last_pts = INT64_MIN;
 +    return 0;
 +}
 +
 +static int configure_input_video_filter(FilterGraph *fg, InputFilter *ifilter,
 +                                        AVFilterInOut *in)
 +{
 +    AVFilterContext *last_filter;
 +    const AVFilter *buffer_filt = avfilter_get_by_name("buffer");
 +    InputStream *ist = ifilter->ist;
 +    InputFile     *f = input_files[ist->file_index];
 +    AVRational tb = ist->framerate.num ? av_inv_q(ist->framerate) :
 +                                         ist->st->time_base;
 +    AVRational fr = ist->framerate;
 +    AVRational sar;
 +    AVBPrint args;
 +    char name[255];
 +    int ret, pad_idx = 0;
 +    int64_t tsoffset = 0;
 +
 +    if (ist->dec_ctx->codec_type == AVMEDIA_TYPE_AUDIO) {
 +        av_log(NULL, AV_LOG_ERROR, "Cannot connect video filter to audio input\n");
 +        return AVERROR(EINVAL);
 +    }
 +
 +    if (!fr.num)
 +        fr = av_guess_frame_rate(input_files[ist->file_index]->ctx, ist->st, NULL);
 +
 +    if (ist->dec_ctx->codec_type == AVMEDIA_TYPE_SUBTITLE) {
 +        ret = sub2video_prepare(ist);
 +        if (ret < 0)
 +            return ret;
 +    }
 +
 +    sar = ist->st->sample_aspect_ratio.num ?
 +          ist->st->sample_aspect_ratio :
 +          ist->dec_ctx->sample_aspect_ratio;
 +    if(!sar.den)
 +        sar = (AVRational){0,1};
 +    av_bprint_init(&args, 0, 1);
 +    av_bprintf(&args,
 +             "video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:"
 +             "pixel_aspect=%d/%d:sws_param=flags=%d", ist->resample_width,
 +             ist->resample_height,
 +             ist->hwaccel_retrieve_data ? ist->hwaccel_retrieved_pix_fmt : ist->resample_pix_fmt,
 +             tb.num, tb.den, sar.num, sar.den,
++             SWS_BILINEAR + ((ist->dec_ctx->flags&AV_CODEC_FLAG_BITEXACT) ? SWS_BITEXACT:0));
 +    if (fr.num && fr.den)
 +        av_bprintf(&args, ":frame_rate=%d/%d", fr.num, fr.den);
 +    snprintf(name, sizeof(name), "graph %d input from stream %d:%d", fg->index,
 +             ist->file_index, ist->st->index);
 +
 +    if ((ret = avfilter_graph_create_filter(&ifilter->filter, buffer_filt, name,
 +                                            args.str, NULL, fg->graph)) < 0)
 +        return ret;
 +    last_filter = ifilter->filter;
 +
 +    if (ist->autorotate) {
 +        double theta = get_rotation(ist->st);
 +
 +        if (fabs(theta - 90) < 1.0) {
 +            ret = insert_filter(&last_filter, &pad_idx, "transpose", "clock");
 +        } else if (fabs(theta - 180) < 1.0) {
 +            ret = insert_filter(&last_filter, &pad_idx, "hflip", NULL);
 +            if (ret < 0)
 +                return ret;
 +            ret = insert_filter(&last_filter, &pad_idx, "vflip", NULL);
 +        } else if (fabs(theta - 270) < 1.0) {
 +            ret = insert_filter(&last_filter, &pad_idx, "transpose", "cclock");
 +        } else if (fabs(theta) > 1.0) {
 +            char rotate_buf[64];
 +            snprintf(rotate_buf, sizeof(rotate_buf), "%f*PI/180", theta);
 +            ret = insert_filter(&last_filter, &pad_idx, "rotate", rotate_buf);
 +        }
 +        if (ret < 0)
 +            return ret;
 +    }
 +
 +    if (ist->framerate.num) {
 +        AVFilterContext *setpts;
 +
 +        snprintf(name, sizeof(name), "force CFR for input from stream %d:%d",
 +                 ist->file_index, ist->st->index);
 +        if ((ret = avfilter_graph_create_filter(&setpts,
 +                                                avfilter_get_by_name("setpts"),
 +                                                name, "N", NULL,
 +                                                fg->graph)) < 0)
 +            return ret;
 +
 +        if ((ret = avfilter_link(last_filter, 0, setpts, 0)) < 0)
 +            return ret;
 +
 +        last_filter = setpts;
 +    }
 +
 +    if (do_deinterlace) {
 +        AVFilterContext *yadif;
 +
 +        snprintf(name, sizeof(name), "deinterlace input from stream %d:%d",
 +                 ist->file_index, ist->st->index);
 +        if ((ret = avfilter_graph_create_filter(&yadif,
 +                                                avfilter_get_by_name("yadif"),
 +                                                name, "", NULL,
 +                                                fg->graph)) < 0)
 +            return ret;
 +
 +        if ((ret = avfilter_link(last_filter, 0, yadif, 0)) < 0)
 +            return ret;
 +
 +        last_filter = yadif;
 +    }
 +
 +    snprintf(name, sizeof(name), "trim for input stream %d:%d",
 +             ist->file_index, ist->st->index);
 +    if (copy_ts) {
 +        tsoffset = f->start_time == AV_NOPTS_VALUE ? 0 : f->start_time;
 +        if (!start_at_zero && f->ctx->start_time != AV_NOPTS_VALUE)
 +            tsoffset += f->ctx->start_time;
 +    }
 +    ret = insert_trim(((f->start_time == AV_NOPTS_VALUE) || !f->accurate_seek) ?
 +                      AV_NOPTS_VALUE : tsoffset, f->recording_time,
 +                      &last_filter, &pad_idx, name);
 +    if (ret < 0)
 +        return ret;
 +
 +    if ((ret = avfilter_link(last_filter, 0, in->filter_ctx, in->pad_idx)) < 0)
 +        return ret;
 +    return 0;
 +}
 +
 +static int configure_input_audio_filter(FilterGraph *fg, InputFilter *ifilter,
 +                                        AVFilterInOut *in)
 +{
 +    AVFilterContext *last_filter;
 +    const AVFilter *abuffer_filt = avfilter_get_by_name("abuffer");
 +    InputStream *ist = ifilter->ist;
 +    InputFile     *f = input_files[ist->file_index];
 +    AVBPrint args;
 +    char name[255];
 +    int ret, pad_idx = 0;
 +    int64_t tsoffset = 0;
 +
 +    if (ist->dec_ctx->codec_type != AVMEDIA_TYPE_AUDIO) {
 +        av_log(NULL, AV_LOG_ERROR, "Cannot connect audio filter to non audio input\n");
 +        return AVERROR(EINVAL);
 +    }
 +
 +    av_bprint_init(&args, 0, AV_BPRINT_SIZE_AUTOMATIC);
 +    av_bprintf(&args, "time_base=%d/%d:sample_rate=%d:sample_fmt=%s",
 +             1, ist->dec_ctx->sample_rate,
 +             ist->dec_ctx->sample_rate,
 +             av_get_sample_fmt_name(ist->dec_ctx->sample_fmt));
 +    if (ist->dec_ctx->channel_layout)
 +        av_bprintf(&args, ":channel_layout=0x%"PRIx64,
 +                   ist->dec_ctx->channel_layout);
 +    else
 +        av_bprintf(&args, ":channels=%d", ist->dec_ctx->channels);
 +    snprintf(name, sizeof(name), "graph %d input from stream %d:%d", fg->index,
 +             ist->file_index, ist->st->index);
 +
 +    if ((ret = avfilter_graph_create_filter(&ifilter->filter, abuffer_filt,
 +                                            name, args.str, NULL,
 +                                            fg->graph)) < 0)
 +        return ret;
 +    last_filter = ifilter->filter;
 +
 +#define AUTO_INSERT_FILTER_INPUT(opt_name, filter_name, arg) do {                 \
 +    AVFilterContext *filt_ctx;                                              \
 +                                                                            \
 +    av_log(NULL, AV_LOG_INFO, opt_name " is forwarded to lavfi "            \
 +           "similarly to -af " filter_name "=%s.\n", arg);                  \
 +                                                                            \
 +    snprintf(name, sizeof(name), "graph %d %s for input stream %d:%d",      \
 +                fg->index, filter_name, ist->file_index, ist->st->index);   \
 +    ret = avfilter_graph_create_filter(&filt_ctx,                           \
 +                                       avfilter_get_by_name(filter_name),   \
 +                                       name, arg, NULL, fg->graph);         \
 +    if (ret < 0)                                                            \
 +        return ret;                                                         \
 +                                                                            \
 +    ret = avfilter_link(last_filter, 0, filt_ctx, 0);                       \
 +    if (ret < 0)                                                            \
 +        return ret;                                                         \
 +                                                                            \
 +    last_filter = filt_ctx;                                                 \
 +} while (0)
 +
 +    if (audio_sync_method > 0) {
 +        char args[256] = {0};
 +
 +        av_strlcatf(args, sizeof(args), "async=%d", audio_sync_method);
 +        if (audio_drift_threshold != 0.1)
 +            av_strlcatf(args, sizeof(args), ":min_hard_comp=%f", audio_drift_threshold);
 +        if (!fg->reconfiguration)
 +            av_strlcatf(args, sizeof(args), ":first_pts=0");
 +        AUTO_INSERT_FILTER_INPUT("-async", "aresample", args);
 +    }
 +
 +//     if (ost->audio_channels_mapped) {
 +//         int i;
 +//         AVBPrint pan_buf;
 +//         av_bprint_init(&pan_buf, 256, 8192);
 +//         av_bprintf(&pan_buf, "0x%"PRIx64,
 +//                    av_get_default_channel_layout(ost->audio_channels_mapped));
 +//         for (i = 0; i < ost->audio_channels_mapped; i++)
 +//             if (ost->audio_channels_map[i] != -1)
 +//                 av_bprintf(&pan_buf, ":c%d=c%d", i, ost->audio_channels_map[i]);
 +//         AUTO_INSERT_FILTER_INPUT("-map_channel", "pan", pan_buf.str);
 +//         av_bprint_finalize(&pan_buf, NULL);
 +//     }
 +
 +    if (audio_volume != 256) {
 +        char args[256];
 +
 +        av_log(NULL, AV_LOG_WARNING, "-vol has been deprecated. Use the volume "
 +               "audio filter instead.\n");
 +
 +        snprintf(args, sizeof(args), "%f", audio_volume / 256.);
 +        AUTO_INSERT_FILTER_INPUT("-vol", "volume", args);
 +    }
 +
 +    snprintf(name, sizeof(name), "trim for input stream %d:%d",
 +             ist->file_index, ist->st->index);
 +    if (copy_ts) {
 +        tsoffset = f->start_time == AV_NOPTS_VALUE ? 0 : f->start_time;
 +        if (!start_at_zero && f->ctx->start_time != AV_NOPTS_VALUE)
 +            tsoffset += f->ctx->start_time;
 +    }
 +    ret = insert_trim(((f->start_time == AV_NOPTS_VALUE) || !f->accurate_seek) ?
 +                      AV_NOPTS_VALUE : tsoffset, f->recording_time,
 +                      &last_filter, &pad_idx, name);
 +    if (ret < 0)
 +        return ret;
 +
 +    if ((ret = avfilter_link(last_filter, 0, in->filter_ctx, in->pad_idx)) < 0)
 +        return ret;
 +
 +    return 0;
 +}
 +
 +static int configure_input_filter(FilterGraph *fg, InputFilter *ifilter,
 +                                  AVFilterInOut *in)
 +{
 +    av_freep(&ifilter->name);
 +    DESCRIBE_FILTER_LINK(ifilter, in, 1);
 +
 +    if (!ifilter->ist->dec) {
 +        av_log(NULL, AV_LOG_ERROR,
 +               "No decoder for stream #%d:%d, filtering impossible\n",
 +               ifilter->ist->file_index, ifilter->ist->st->index);
 +        return AVERROR_DECODER_NOT_FOUND;
 +    }
 +    switch (avfilter_pad_get_type(in->filter_ctx->input_pads, in->pad_idx)) {
 +    case AVMEDIA_TYPE_VIDEO: return configure_input_video_filter(fg, ifilter, in);
 +    case AVMEDIA_TYPE_AUDIO: return configure_input_audio_filter(fg, ifilter, in);
 +    default: av_assert0(0);
 +    }
 +}
 +
 +int configure_filtergraph(FilterGraph *fg)
 +{
 +    AVFilterInOut *inputs, *outputs, *cur;
 +    int ret, i, simple = !fg->graph_desc;
 +    const char *graph_desc = simple ? fg->outputs[0]->ost->avfilter :
 +                                      fg->graph_desc;
 +
 +    avfilter_graph_free(&fg->graph);
 +    if (!(fg->graph = avfilter_graph_alloc()))
 +        return AVERROR(ENOMEM);
 +
 +    if (simple) {
 +        OutputStream *ost = fg->outputs[0]->ost;
 +        char args[512];
 +        AVDictionaryEntry *e = NULL;
 +
 +        snprintf(args, sizeof(args), "flags=0x%X", (unsigned)ost->sws_flags);
 +        fg->graph->scale_sws_opts = av_strdup(args);
 +
 +        args[0] = 0;
 +        while ((e = av_dict_get(ost->swr_opts, "", e,
 +                                AV_DICT_IGNORE_SUFFIX))) {
 +            av_strlcatf(args, sizeof(args), "%s=%s:", e->key, e->value);
 +        }
 +        if (strlen(args))
 +            args[strlen(args)-1] = 0;
 +        av_opt_set(fg->graph, "aresample_swr_opts", args, 0);
 +
 +        args[0] = '\0';
 +        while ((e = av_dict_get(fg->outputs[0]->ost->resample_opts, "", e,
 +                                AV_DICT_IGNORE_SUFFIX))) {
 +            av_strlcatf(args, sizeof(args), "%s=%s:", e->key, e->value);
 +        }
 +        if (strlen(args))
 +            args[strlen(args) - 1] = '\0';
 +        fg->graph->resample_lavr_opts = av_strdup(args);
 +
 +        e = av_dict_get(ost->encoder_opts, "threads", NULL, 0);
 +        if (e)
 +            av_opt_set(fg->graph, "threads", e->value, 0);
 +    }
 +
 +    if ((ret = avfilter_graph_parse2(fg->graph, graph_desc, &inputs, &outputs)) < 0)
 +        return ret;
 +
 +    if (simple && (!inputs || inputs->next || !outputs || outputs->next)) {
 +        const char *num_inputs;
 +        const char *num_outputs;
 +        if (!outputs) {
 +            num_outputs = "0";
 +        } else if (outputs->next) {
 +            num_outputs = ">1";
 +        } else {
 +            num_outputs = "1";
 +        }
 +        if (!inputs) {
 +            num_inputs = "0";
 +        } else if (inputs->next) {
 +            num_inputs = ">1";
 +        } else {
 +            num_inputs = "1";
 +        }
 +        av_log(NULL, AV_LOG_ERROR, "Simple filtergraph '%s' was expected "
 +               "to have exactly 1 input and 1 output."
 +               " However, it had %s input(s) and %s output(s)."
 +               " Please adjust, or use a complex filtergraph (-filter_complex) instead.\n",
 +               graph_desc, num_inputs, num_outputs);
 +        return AVERROR(EINVAL);
 +    }
 +
 +    for (cur = inputs, i = 0; cur; cur = cur->next, i++)
 +        if ((ret = configure_input_filter(fg, fg->inputs[i], cur)) < 0) {
 +            avfilter_inout_free(&inputs);
 +            avfilter_inout_free(&outputs);
 +            return ret;
 +        }
 +    avfilter_inout_free(&inputs);
 +
 +    for (cur = outputs, i = 0; cur; cur = cur->next, i++)
 +        configure_output_filter(fg, fg->outputs[i], cur);
 +    avfilter_inout_free(&outputs);
 +
 +    if ((ret = avfilter_graph_config(fg->graph, NULL)) < 0)
 +        return ret;
 +
 +    fg->reconfiguration = 1;
 +
 +    for (i = 0; i < fg->nb_outputs; i++) {
 +        OutputStream *ost = fg->outputs[i]->ost;
 +        if (ost &&
 +            ost->enc->type == AVMEDIA_TYPE_AUDIO &&
 +            !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
 +            av_buffersink_set_frame_size(ost->filter->filter,
 +                                         ost->enc_ctx->frame_size);
 +    }
 +
 +    return 0;
 +}
 +
 +int ist_in_filtergraph(FilterGraph *fg, InputStream *ist)
 +{
 +    int i;
 +    for (i = 0; i < fg->nb_inputs; i++)
 +        if (fg->inputs[i]->ist == ist)
 +            return 1;
 +    return 0;
 +}
 +
diff --cc ffmpeg_opt.c
index ceebcfe,0000000..3c9f98a
mode 100644,000000..100644
--- /dev/null
@@@ -1,3313 -1,0 +1,3313 @@@
-         ost->enc_ctx->flags |= CODEC_FLAG_QSCALE;
 +/*
 + * ffmpeg option parsing
 + *
 + * This file is part of FFmpeg.
 + *
 + * FFmpeg is free software; you can redistribute it and/or
 + * modify it under the terms of the GNU Lesser General Public
 + * License as published by the Free Software Foundation; either
 + * version 2.1 of the License, or (at your option) any later version.
 + *
 + * FFmpeg is distributed in the hope that it will be useful,
 + * but WITHOUT ANY WARRANTY; without even the implied warranty of
 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 + * Lesser General Public License for more details.
 + *
 + * You should have received a copy of the GNU Lesser General Public
 + * License along with FFmpeg; if not, write to the Free Software
 + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 + */
 +
 +#include <stdint.h>
 +
 +#include "ffmpeg.h"
 +#include "cmdutils.h"
 +
 +#include "libavformat/avformat.h"
 +
 +#include "libavcodec/avcodec.h"
 +
 +#include "libavfilter/avfilter.h"
 +