[mythtv-users] Poor HD Playback
jayf0ster at sbcglobal.net
Mon Apr 20 23:55:37 UTC 2009
> > I switched from using ffmpeg to xvmc and have tried
> Bob2x. This has improved things, but it is still not
> smooth. 720P programs do seem better than 1080i, but even
> 720P isn't smooth. NBC and CBS programs seem to be the
> most twitchy, and NBC programs have periodic bad frames with
> Bob2x. These bad frames happen in the same place each time
> I play back the recording, so it is something about the
> encoding that Bob2x doesn't handle.
> > When I press 'M' and check the Video Scan setting, NBC
> programs (1080i) are being auto-detected as (P) progressive.
> I switch this to interlaced, but notice no difference.
> Other 1080i networks (PBS, CW) are properly detected as
> interlaced. Does this have anything to do with this?
> What actually happens with NBC (and CBS I believe) is that
> the auto
> detect is constantly switching from progressive to
> interlaced, as both
> NBC and CBS mix progressive frames into their interlaced
> You're probably just catching it when it's set to P.
> I posted a hack to lock it into interlaced for such video
> ...however you can easily find out if that's causing any of
> problems simply by going into video scan in the playback
> menu and
> setting it to interlaced (normal). In my case, this
> switching back
> and forth caused major issues with Paul's new
I have tried selecting Interlaced, but didn't notice any difference. I did not pause the playback first though. Would that make a difference?
Is there anyway I can tell if my myth distribution (mythbuntu 8.10 0.21-fixes) has the 2903 patch? I did a search for this on the mythbuntu forum, but came up with nothing. I figure someone on this list would probably know. The link you gave noted that it was recently committed to trunk and Jean-Yves indicated that it was in his repository.
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