[mythtv] FFmpeg sync

Paul Kendall paul at kcbbs.gen.nz
Tue Sep 16 06:21:28 UTC 2008

On Tuesday 16 September 2008 12:45:25 Janne Grunau wrote:
> Hi,
> It's FFmpeg sync time. I made patches and my git mirror[1] of mythtv's
> svn repository available to testers in the #mythtv irc channel on
> freenode.
> I think the sync is pretty stable and I'm only aware of
> one "regression". The volume of FFmpeg's native AC3 decoder after
> downmixing 5.1 audio to stereo. I've compared the implementation with
> the specs and I'm pretty sure that the implemantion is correct.
> Previously we amplified the audio during downmixing but I don't think it
> belongs there. It looks as if the code correct and more importly the
> AC3 can use now a SIMD implemation of the downmixing function.

Woot! Once this is in trunk I will update my patch for LATM/AAC support and 
provide a ticket so it can (hopefully) be included as well.

> Janne


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