ffmpeg_filter: refuse to configure input without a decoder.
authorNicolas George <george@nsup.org>
Fri, 18 Jul 2014 08:34:39 +0000 (10:34 +0200)
committerNicolas George <george@nsup.org>
Wed, 30 Jul 2014 12:40:45 +0000 (14:40 +0200)
commit91244073fd8b983e7cd1f97da83daf956fbbddc6
treed4675355588799c91ff395935d1bff24208f1989
parentff9a154157ecca30f585c5eb97f1cd600f500213
ffmpeg_filter: refuse to configure input without a decoder.

The decoder is necessary in order to filter frames.
This makes the error message clearer in this case:
currently, it will usually fail because the pixel or sample
format is not defined and is converted into "(null)"
(non-portable).

Enhance trac ticket #3779.
ffmpeg_filter.c