[mythtv-users] VDPAU deinterlacers in trunk

[David Knight]

> For me, the symptoms are not consistent.  After a fresh reboot,
> Advanced 2x will often work fine.  Once it starts to stutter, though,
> it will continue to stutter until another reboot.  The lines you list
> above are displayed even when it works, so I think the pertinent
> information is elsewhere.
>
> If you do:
>
> export VDPAU_NVIDIA_DEBUG=3
>
> and then run mythfrontend with "-v playback", some useful information
> my be produced in the log.

Hi John/others,

   I enabled the logging and this seems to coincide with the stutter issue:

2008-12-10 22:00:20.583 NVP: prebuffering pause
2008-12-10 22:00:20.584 NVP: Waiting for prebuffer.. 0 AAAAAAAAaAALLAAAA
2008-12-10 22:00:21.089 NVP: Video is 3.23102 frames behind audio (too
slow), dropping frame to catch up.
2008-12-10 22:00:21.090 NVP: Video is 3.3045 frames behind audio (too
slow), dropping frame to catch up.
2008-12-10 22:00:21.090 NVP: Video is 3.10963 frames behind audio (too
slow), dropping frame to catch up.
2008-12-10 22:00:21.388 NVP: Video is 3.49123 frames behind audio (too
slow), dropping frame to catch up.
2008-12-10 22:00:21.389 NVP: Video is 3.6184 frames behind audio (too
slow), dropping frame to catch up.
2008-12-10 22:00:21.389 NVP: Video is 3.4638 frames behind audio (too
slow), dropping frame to catch up.
2008-12-10 22:00:21.389 NVP: Video is 3.09785 frames behind audio (too
slow), dropping frame to catch up.
2008-12-10 22:00:21.660 NVP: Video is 3.26257 frames behind audio (too
slow), dropping frame to catch up.
2008-12-10 22:00:21.664 NVP: Video is 3.41567 frames behind audio (too
slow), dropping frame to catch up.
2008-12-10 22:00:21.665 NVP: 2400 interlaced frames seen.

Interestingly this wiki article describes the error and seems to suggest
that the wrong deinterlacer is being used ?!?! (Bottom of page "Note about
deinterlacers").

http://www.mythtv.org/wiki/index.php/Playback_profiles

My setup has been stuttering ever since now and reboot does not cure it :(
changing to Basic 1x hw or None for deinterlacer gets rid of the stutter
but not the flickering vertical bars.

Cheers

Dave