[FFmpeg-devel] [PATCH] doc: document amerge filter as an alternative for the -map_channel limitation.

[Clément Bœsch]

On Mon, Jan 23, 2012 at 03:13:29PM +0100, Nicolas George wrote:
> L'octidi 28 nivôse, an CCXX, Tim Nicholson a écrit :
> > OK so after further testing I propose this amendment to Clément's patch:-
> > 
> > was:-
> > + at example
> > +ffmpeg -i input.mkv -f lavfi -i "
> > +amovie=input.mkv:si=1 [a1];
> > +amovie=input.mkv:si=2 [a2];
> > +[a1][a2] amerge" -c:a pcm_s16le -c:v copy output.mkv
> > + at end example
> > +
> > 
> > becomes:-
> > + at example
> > +ffmpeg -i input.mkv -f lavfi -i "
> > +amovie=input.mkv:si=1 [a1];
> > +amovie=input.mkv:si=2 [a2];
> > +[a1][a2] amerge, aformat=s16:stereo:all" -c:a pcm_s16le -c:v copy output.mkv
> > + at end example
> > +
> > 
> > Thus forcing the stereo format in cases where the source bit depth may not be 16.
> 
> I have a mixed feeling about that: the aformat/s16 problem is not related to
> amerge, if we start adding it there, we should add it pretty anywhere, and
> it will make all examples muddy.
> 
> A dedicated section on troubleshooting would, IMHO, more appropriate.
> 

Sorry I almost forgot this patch. It seems there is still something to fix
with the current patch; do you expect me to change something concerning
the last version I sent or should I just push it?

[...]

-- 
Clément B.
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