[Ffmpeg-devel] dts decoding broken?

Uoti Urpala uoti.urpala
Fri Feb 16 21:48:34 CET 2007

On Fri, 2007-02-09 at 19:19 +0200, Uoti Urpala wrote:
> On Fri, 2007-02-09 at 17:52 +0100, mail at kraymer.de wrote:
> > same with 5.1 dts. Now, I only get 2 out of 6 channels without downmix,
> > even with -channels 2 and/or -af channels=2. What I get is mainly music
> > and background sounds, voices are missing.
> > I did some regression testing and it turned out that a change in ffmpeg,
> > namely commit -r 7839, introduced that behavior. Using recent mplayer svn
> That commit changes the decoder to output the full number of channels by
> default. Unfortunately it also seems to completely remove the ability to
> use the libdts downmixing functionality.
> The rest of the channels are there and you can access them by explicitly
> specifying some conversion to 2 channels with "-af pan" for example.
> However having a way to use the libdts downmixing would be better.

Does anyone intend to restore support for the downmixing functionality?
Can anything sanely use the current 6-channel output? Is the channel
order even documented anywhere in FFmpeg (outside libdts)?

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