[mythtv-users] SVN 15166: playback profiles - Deinterlacers [SOLVED]

Phill Wiggin alamar at gmail.com
Wed Jan 16 23:52:59 UTC 2008

On Jan 14, 2008 10:33 PM, Phill Wiggin <alamar at gmail.com> wrote:
> And that's where I'm stuck. xvmc-opengl isn't available, and falls
> back to opengl-blit. I've tried all the other renderers, the audio's
> fine, but the video is like watching a flip-book. Bob2x makes the
> picture look nice, but I get prebuffering pauses.  With xvmc, One
> Field fixes the prebuffering pauses, but introduces nasty combing
> effects.
> Libavcodec apparently has issues (as seen above), but this same FE box
> ran HD (pre-Profiles) flawlessly.
> The only thing I can really think of is a driver issue. Is there a
> specific nvidia driver I should use?  Currently, I'm at 100.14.19.
> Any help is greatly appreciated.
> Thanks,
> --Phill

For what it's worth, I solved my problem.  At the risk of displaying
my own ignorance/silliness, I'll close this out by explaining.

I downgraded my video drivers to nvidia-drivers-96.43.01.  This didn't
help, regardless of the Profile settings.

Then, I found http://www.mythtv.org/docs/mythtv-HOWTO-5.html .  Using
the "Enabling real-time scheduling of the display thread" instructions
for PAM, I enabled real-time priority.  Then, made sure that real-time
priority was enabled in the Mythfrontend's settings.

Once again, I have a working HD frontend!  It still gets prebuffering
pauses after commercial skips, but that's no big deal.

Oh, and a couple of last notes:
 - This box is an Athlon 64 3200+ (not a Sempron 2600+).
 - I'd adamantly asserted this was working prior to Profiles.  I'm
pretty sure I previously had this working using the SUID route, but
somewhere along the way during a recompile/install (around the
introduction of Profiles), that got blown away and real-time priority
went away.

Thanks for your suggestions,


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