[MPlayer-users] Strange problem with videos having mixed stereo and 5.1 sound - slow playback

[Reimar Döffinger]

On Wed, Jul 14, 2010 at 08:25:25PM +0000, Carl Eugen Hoyos wrote:
> Reimar Döffinger <Reimar.Doeffinger <at> gmx.de> writes:
> 
> > On Wed, Jul 14, 2010 at 06:22:18PM +0000, Carl Eugen Hoyos wrote:
> > > Florian Schröck <floschroeck <at> googlemail.com> writes:
> > > 
> > > > Some MKV files, which have been recorded from an HDTV broadcast TV
> > > > shows, seem to have a AC3 audio track which is mixed stereo and 5.1. It
> > > > is always the same issue: At the beginning of the file are scenes from
> > > > the previous episode in stereo and right when the "real" episode begins,
> > > > the sound switches to 5.1 and the playback gets really slow, like slow
> > > > motion, the picture and the audio, too.
> > > 
> > > The problem is known
> > 
> > Not to me. I'd expect the channel change is not detected and/or the filter
> > chain not proper reinitialized.
> 
> It is a kind of regression, since it's not reproducible with liba52 (but with
> old mplayer and -ac ffac3).

The way we use it I think liba52 does not change channels.

> I uploaded ac3channelchange.ts to incoming

Doesn't look like it, at least it's not there.