[FFmpeg-devel] [PATCH] dca: map xxch side channels to AV_CH_SIDE_LEFT/RIGHT instead of REAR.

Michael Niedermayer michaelni at gmx.at
Wed Jul 11 01:25:24 CEST 2012

On Tue, Jul 10, 2012 at 10:34:49PM +0100, Nick Brereton wrote:
> On 2012-07-09 11:04, Hendrik Leppkes wrote:
> >On Mon, Jul 9, 2012 at 11:44 AM, Benjamin Larsson
> ><benjamin at southpole.se>wrote:
> >
> >>OK MvH Benjamin Larsson
> >
> >I talked to Nick directly, and he'll be looking at the code as
> >soon as
> >he
> >finds the time to diagnose the other issues i reported, maybe we
> >should
> >hold this until then.
> >
> >- Hendrik
> >_______________________________________________
> >ffmpeg-devel mailing list
> >ffmpeg-devel at ffmpeg.org
> >http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
> In re the first problem, DTS seem to have a greater variety of
> flavours than ffmpeg does; the net result is that I've had to
> compress some of the positions. In this case
> DCA_XXCH_SIDE_REAR_LEFT/RIGHT (which are reserved for the core
> channels only) are not used and are replaced with
> DCA_XXCH_SIDE_SURROUND_LEFT/RIGHT which I had guessed (wrongly) were
> I think your fix is a reasonable solution in this case; you should
> also make the av_log message on line 2282 an error message.
> Are there a proscribed set of allowable speaker configurations for
> XXCH? If there are it might help to clean this up somewhat.
> The code that undoes the embedded down-mix is a bit fragile as
> you've noted & in this case gets the wrong channels to remove the
> down-mix from (it winds up eliminating itself instead). I'll try a
> different solution over the weekend.

should i apply the patch or wait?
if wait, do you have some git clone of ffmpeg from where i can after
you have found a solution just pull all needed changes ?


Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

The misfortune of the wise is better than the prosperity of the fool.
-- Epicurus
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