lavu/dict: add more tests
[ffmpeg.git] / ffmpeg_opt.c
index 39c5f49..15eee0b 100644 (file)
@@ -110,6 +110,7 @@ static int no_file_overwrite  = 0;
 static int do_psnr            = 0;
 static int input_sync;
 static int override_ffserver  = 0;
+static int input_stream_potentially_available = 0;
 
 static void uninit_options(OptionsContext *o)
 {
@@ -1008,6 +1009,8 @@ static int open_input_file(OptionsContext *o, const char *filename)
         av_dict_free(&opts[i]);
     av_freep(&opts);
 
+    input_stream_potentially_available = 1;
+
     return 0;
 }
 
@@ -2104,6 +2107,12 @@ loop_end:
         }
     }
 
+    if (!(oc->oformat->flags & AVFMT_NOSTREAMS) && !input_stream_potentially_available) {
+        av_log(NULL, AV_LOG_ERROR,
+               "No input streams but output needs an input stream\n");
+        exit_program(1);
+    }
+
     if (!(oc->oformat->flags & AVFMT_NOFILE)) {
         /* test if it already exists to avoid losing precious files */
         assert_file_overwrite(filename);
@@ -2608,6 +2617,9 @@ static int opt_filter_complex(void *optctx, const char *opt, const char *arg)
     filtergraphs[nb_filtergraphs - 1]->graph_desc = av_strdup(arg);
     if (!filtergraphs[nb_filtergraphs - 1]->graph_desc)
         return AVERROR(ENOMEM);
+
+    input_stream_potentially_available = 1;
+
     return 0;
 }
 
@@ -2622,6 +2634,9 @@ static int opt_filter_complex_script(void *optctx, const char *opt, const char *
         return AVERROR(ENOMEM);
     filtergraphs[nb_filtergraphs - 1]->index      = nb_filtergraphs - 1;
     filtergraphs[nb_filtergraphs - 1]->graph_desc = graph_desc;
+
+    input_stream_potentially_available = 1;
+
     return 0;
 }
 
@@ -3025,7 +3040,7 @@ const OptionDef options[] = {
                       OPT_INPUT | OPT_OUTPUT,                                    { .off = OFFSET(top_field_first) },
         "top=1/bottom=0/auto=-1 field first", "" },
     { "vtag",         OPT_VIDEO | HAS_ARG | OPT_EXPERT  | OPT_PERFILE |
-                      OPT_OUTPUT,                                                { .func_arg = opt_old2new },
+                      OPT_INPUT | OPT_OUTPUT,                                    { .func_arg = opt_old2new },
         "force video tag/fourcc", "fourcc/tag" },
     { "qphist",       OPT_VIDEO | OPT_BOOL | OPT_EXPERT ,                        { &qp_hist },
         "show QP histogram" },