[mythtv-users] Playing ripped videos: out-of-sync audio at times

James Gutshall Jr warchildx at gmail.com
Tue Nov 20 21:52:42 UTC 2007

ok, to clarify, my issue was mplayer was trying to use the x11 driver
instead of the xv driver when playing back over my pvr-350 card.  did not
effect mpeg recordings, but that was because the recorded videos use a
different player than the mythvideo was using.  Also I was using xvid
compressed avi files. YMMV.  I now, however have fixed the driver issue with
my pvr-350, and am able to play via the internal player, so this no longer
effects me.  thus my memory may be off, but maybe this can at least help you
narrow down some possibilities or spark a thought with other users who may
have encountered something similar.

On Nov 20, 2007 4:48 PM, James Gutshall Jr <warchildx at gmail.com> wrote:

> Though not specific with xine, but I had a similar issue with mplayer.
> i had to specify the vo option (video out to make it use the proper xv
> driver, otherwise it was burning up cpu, and jacking up my audio.  also the
> longer the video was playing, the farther out of sync it would get.  I
> verified it was not the file by doing a "back/rewind" which would skip back
> about 5 seconds, then resume playing.  that would immediately resync the
> audio, then a little bit later it would become out of sync again.
> 1) I would verify cpu usage during playback. (remote ssh using top, etc).
> See if cpu usage is high.
> 2) see if xine has a video out you can specify. (options are in database,
> or configured via mythweb, or via frontend - specific to each frontend).
> -James
> On Nov 20, 2007 2:00 PM, lanas <lanas at securenet.net> wrote:
> > Folks,
> >
> >  When playing videos ripped by MythTV, sometimes the audio is way out
> > of sync.  Terminating mythfrontend and immediately mounting the iso
> > file and launching xine on it ('xine dvd:/mnt/disk') does not show this
> > problem.
> >
> >  Going back to mythfrontend, and trying it again, the audio of the
> > playing video is still out of whack.  Trying to play a short mpeg clip
> > does not show this problem.  After several tries, and then going back
> > to the orignal video with the problem, the sound is suddenly in sync and
> > everything is fine.
> >
> >  Myth was configured to play videos with 'xine -f --no-splash %s' but
> > I changed it to 'Internal'.  Both ways the problem was there.
> >
> >  This might look like some other process ran by mythfrontend might
> > interfere with playing videos. Mobo is brand new AMD X2 with 2GB of
> > RAM, DMA and 32 bit access are enabled on the IDE hard disk.  IDE bus is
> >
> > shared with a DVD drive.
> >
> > Is there any optimization that can be done so that the audio is always
> > in sync ?
> >
> > Thanks,
> >
> > Al
> > _______________________________________________
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> > mythtv-users at mythtv.org
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> >
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