[FFmpeg-cvslog] avfilter: Dont partially merge lists

[Michael Niedermayer]

On Mon, Aug 05, 2013 at 06:42:15PM +0000, Carl Eugen Hoyos wrote:
> Michael Niedermayer <git <at> videolan.org> writes:
> 
> > ffmpeg | branch: master | Michael Niedermayer | 
> > Mon Jul 22 02:31:04 2013 +0200|
> > [fe328f0807687ab5d418ff164b389f953102912f] | 
> > committer: Michael Niedermayer
> > 
> > avfilter: Dont partially merge lists
> 
> This patch changes the output of the following command:
> $ ffmpeg -i 5.1.ac3 -af aformat=channel_layouts=stereo out.wav
> A user believes that this is a bug:
> ffmpeg-user: "Preserving perceived loudness when downmixing 
> audio from 5.1 AC3 to stereo AAC"

when downmixing to s16 how could you preserve the loudness without
risking cliping ?
mix 2 channels out[i] = in0[i] + in1[i]
assume in is +-32767

if you as user know it wont clip you can use  -rematrix_maxval 9999999
or something like that

[...]

-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

When the tyrant has disposed of foreign enemies by conquest or treaty, and
there is nothing more to fear from them, then he is always stirring up
some war or other, in order that the people may require a leader. -- Plato
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