[mythtv-users] Playback/seeking strangeness

[Andy Foster]

Hi,

On 4/29/05, Cecil Watson <cwatson at linkline.com> wrote:
> Hello,
> 
> Andy Foster wrote:
> 
> >I understand there are currently some ongoing 0.17+ issues with
> >playback which may or may not be codec, hardware or performance
> >related, and just wanted to find out if this explains the rather
> >bizarre symptoms I'm getting. To summarise:
> >
> >1. During watching tv (no recording)
> > All is good. Seeking (timeshit) is fine, playback is fine.
> >
> >2. During live playback (when playing back a show that is currently
> >being recorded):
> > Seeking is fine.
> > Playback is substantially faster than recording. If I'm tailing the
> >live feed by about 10 seconds, it takes about 40 seconds for playback
> >to catch up, and then it stalls for a few seconds or exits to the
> >recordings interface telling me the recording has ended (it hasn't).
> >
> >3. During playback of shows where recording has completed:
> > The initial ffwd works (ie I can jump forwards 6 seconds). Then
> >seeking doesn't work. Trying to seek or jump causes sporadic pauses
> >and sometimes freezes.
> > In addition, the show duration changes wildly. Sometimes it sits near
> >what I imagine it should be and oscillates by 1 second. Othertimes it
> >just goes nuts. A few times I've had it go up to several hundred
> >hours. I can't actually seek there, of course
> > Playback skips forward by (I estimate) 2-4 seconds every now and
> >then, basically cutting slices out of the show.
> >
> >Anyway the end result is, unfortunately, a fairly useless pvr. I've
> >tried dabbling with libmpeg2, video timebase and extra audio buffering
> >options without luck. XvMC is constantly off. Mplayer plays and seeks
> >the recordings fine, although the 2-4 second skipping is still
> >present. I'm running a P4 2.4Ghz, GeForce4MX with VisionPlus DTV with
> >the current 0.18 release. It did work fine with 0.16.
> >
> >Are these common problems or is there something very unhealthy with my setup?
> >
> >thanks
> >
> >
> >
> Check your db for error.
> 
> Regards,
> 
> Cecil
> 
Do you mean for corruption or a logic error?

I have run mysqlcheck on the database, and occasionally I get
corruption in the recordedmarkup table. This is usually because
seeking sometimes causes the frontend to freeze (ie seeking problems
cause corruption not vice versa). Repairing it does not help.

thanks,
andy