[MPlayer-dev-eng] [BUG] Audio jittery after pausing when using AC3 passthrough

[Zoltan Hidvegi]

> An update to this bug: after I pause audio becomes jittery, but if I
> seek in the AVI, it becomes stable again.
> 
> I'm afraid I don't know enough about this to fix it, but I'm happy to
> provide more info or look into it myself with a bit of direction.
> 
> Thanks,
> Jason.
> 
> On Sun, 2003-10-12 at 12:24, Jason Tackaberry wrote:
> > CVS mplayer is exhibiting a bug where when you play a movie with AC3
> > passthrough (using alsa in my case), the audio is fine until you pause
> > it, and after you resume, it is jittery/skippy.
> > 
> > MPlayer 0.90rc5 does not have this problem.
> > 
> > I am calling mplayer this way:
> > 
> >    mplayer file-with-ac3-sound.avi -ao alsa9 -ac hwac3
> > 
> > Again it plays fine only until I pause it.

I am using alsa9 with hwac3 and it works fine for me.  You may try to
use -cache, sometimes that can fix jitter problems.  I can play HDTV
mpeg-ts streams as well as well as avi's with ac3 without problems
using nVidia nForce2 audio (Asus A7N8X deluxe) optical SPDIF output.
Sometimes I get a sharp click noise after unpausing, which is probably
caused by some partial ac3 packet that my reciever cannot decipher.
But after that single click, audio is fine.  I used the 9/20 CVS as
well as the 10/12 CVS, both are fine.  I tried 192kbit and 384kbit 2
channel AC3 files.

Zoli