[Ffmpeg-devel] [PATCH] audio channel extraction

Baptiste Coudurier baptiste.coudurier
Fri Sep 15 14:21:13 CEST 2006

Michael Niedermayer wrote:
> Hi
> On Fri, Sep 15, 2006 at 12:47:20PM +0200, Baptiste Coudurier wrote:
>> Hi
>> This patch adds feature to extract specific channels from audio track.
>> My main goal was to split 4 channels tracks to 2 stereos tracks.
> what about a more generic system which could mix chanels together into
> other channels? so that there would be a AxB matrix of coefficients to
> mix A input channels into B output channels?
> [...]

That would be a nice idea indeed, and would that be usefull for ac3/aac
downmixing also ? I might lack theory and good design skills to do that
though :/
Could you point me papers, or design ideas ?

Is the patch still acceptable for now ?

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