[Ffmpeg-devel] [PATCH] DTS multichannel

Michael Niedermayer michaelni
Fri Apr 27 21:52:03 CEST 2007


Hi

On Thu, Apr 26, 2007 at 06:17:14AM +0300, Kostya wrote:
> On Wed, Apr 25, 2007 at 04:25:18PM -0400, Justin Ruggles wrote:
> > Hi,
> > 
> > Here is a patch to add multichannel support to the native DTS decoder.
> > It also utilizes the downmixing coeffients, which is not done currently.
> >  The default coefficients are based on the comments at the bottom of
> > dtsdata.h.
> > 
> > downmix 5.1 to stereo:
> > ffmpeg -f dts -i stream.dts -acodec pcm_s16le -ac 2 stream-stereo.wav
> > 
> > copy 5.1 direct to wav:
> > ffmpeg -f dts -i stream.dts -acodec pcm_s16le -ac 6 stream-5p1.wav
> > 
> > Note that channel reordering is not done yet, so the multichannel output
> > would be in MPEG-2/4 channel order (C,L,R,LS,RS,LFE).
> > 
> > -Justin
> 
> Looks ok except minor nitpick: 

maybe you should add yourself to dts in MAINTAINERS? it seems theres no
official maintainer for dts in ffmpeg

[...]
-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

1. write clean, simple and working code
2. high level optimizations
3. low level optimizations
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