[mythtv-users] 720p HD content from WPVI in Philly periodic a/v sync issues

Byron Poland wpoland at gmail.com
Fri Dec 11 03:20:56 UTC 2009

for the past couple of months anything I record from WPVI in Philadelphia
(delivered via clear qam from Verizon FIOS in Wilmington, DE), has had
playback problems where the video and audio fall out of sync, and myth then
speeds up the video and/or drops frames for a second or 2 to catch up.  I've
read the list and seen other threads describing a similar phenomenon,
including being isolated to one channel.  All other 720p and 1080 recordings
are playing back fine.  I've yet to find a solution though, and don't have
much hair left to pull out.

I have 2 front-ends (with a remote backend) and I'm experiencing the same
thing on both.  I've tried forcing the recording with both my pci-tuner, and
my HD Homerun, but no difference.

I put a small piece of log from -v playback up on pastebin:

Any pointers or suggestions... thanks!
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