[FFmpeg-devel] [PATCH]Warn the user when trying to mux ac3 in mpeg-1 stream

Carl Eugen Hoyos cehoyos at ag.or.at
Thu Nov 21 14:23:55 CET 2013

Michael Niedermayer <michaelni <at> gmx.at> writes:

> > +            av_log(NULL, AV_LOG_WARNING,
> > +                   "ac3 in MPEG-1 system streams is not widely 
> > supported, "
> > +                   "consider using -f vob or -f dvd to force 
> > MPEG-2 program stream.\n");
> shouldnt this be printed by the mpeg muxer instead of just 1
> application  (ffmpeg) ?

The patch is incomplete because I wanted to only print the 
warning if the user hasn't requested the mpeg muxer and the 
muxer doesn't know if the user specified a muxer or not.

I am assuming that ac3 in MPEG-1 system stream is defined 
and that MPlayer and WMP just don't support it.
If this is not correct, the patch makes no sense imo.

Carl Eugen

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