[MPlayer-dev-eng] Add support for vorbis.acm

[Zuxy Meng]

Hi,

2008/3/4, Roberto Togni <rxt at rtogni.it>:
> On Fri, 29 Feb 2008 16:24:59 +0800
> "Zuxy Meng" <zuxy.meng at gmail.com> wrote:
>
> > Hi,
> >
> > Quite a few people have problems like "Cannot find codec for audio
> > format 0x6771." Such avi files turn out to have been encoded with an
> > old codec whose binary and source can be found at
> > http://svn.xiph.org/tags/vorbis/vorbisacm_20020708/.
> >
> > The attached patch enables mplayer to play at least some of them, like
> > ftp://upload.mplayerhq.hu/MPlayer/samples/avi/ogg/mode2_ogg.avi. But
> > mode3_ogg.avi seems still broken.
> >
>
> mode2 works with your patch, mode3 and ogg.avi have garbled audio.
> The Coyote Ugly sample works with ffvorbis and libvorbis, same for
> mode1.
>
> Can you confirm that this works for anything else than mode2 files?
> Mode1 work without the patch (the avi demuxer takes care of that by
> chaining the ogg demuxer, the only way to use it with the acm is to
> force lavf demuxer so that the vorbis is not extracted from the ogg).
> Mode3 does not work.
> I have no samples for mode 1+, 2+ and 3+

I can confirm that mode3+ works. No samples for 1+ and 2+ either.

>
> Do you have any idea about how audio is stored in mode 2 and 3 (1 is
> just ogg in avi)? Maybe it's not too difficult to support them natively
> in the avi demuxer.

Sure now we have the source.

[...]
-- 
Zuxy
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