[mythtv] VDPAU stuttering in trunk

[Jim Stichnoth]

I'm seeing a problem in recent trunk (r23306) with OTA recordings from
NBC using the VDPAU Normal profile on an ION frontend.  There is
constant stuttering with continual log output like this:

2010-01-26 06:59:43.956 NVP(2): Video is 5.59171 frames ahead of audio,
                        doubling video frame interval to slow down.
2010-01-26 06:59:44.006 NVP(2): Video is 5.3776 frames ahead of audio,
                        doubling video frame interval to slow down.
2010-01-26 06:59:44.056 NVP(2): Video is 5.08964 frames ahead of audio,
                        doubling video frame interval to slow down.

The stuttering goes away if I use the Slim profile or if I lock the
video scan to Progressive.  My previous version where playback worked
properly was r23233.  This stuttering is present in all the Heroes
episodes shown in January (but not the episodes from November), which
I still have around.

Is anyone else seeing this?

Jim