[mythtv-users] Upgrade from 0.21-fixes 18314 to 20500: frames behind audio problems?

Tom Dexter digitalaudiorock at gmail.com
Thu May 7 17:05:16 UTC 2009


I've been running a custom Gentoo ebuild of 0.21-fixes 18314 for some
time now.  Today I made my self an ebuild to upgrade to rev 20500 out
of SVN 0.21-fixes.

I ended up having to downgrade back to 18314.  On any LiveTV 1080i
broadcasts I got hammered with these errors:

2009-05-07 11:55:00.011 NVP: Video is 3.0149 frames behind audio (too
slow), dropping frame to catch up.
2009-05-07 11:55:00.221 NVP: Video is 3.23074 frames behind audio (too
slow), dropping frame to catch up.
2009-05-07 11:55:00.226 NVP: Video is 3.10487 frames behind audio (too
slow), dropping frame to catch up.
2009-05-07 11:55:00.339 NVP: Video is 3.00147 frames behind audio (too
slow), dropping frame to catch up.
2009-05-07 11:55:00.438 NVP: Video is 3.22619 frames behind audio (too
slow), dropping frame to catch up.
2009-05-07 11:55:00.445 NVP: Video is 3.22883 frames behind audio (too
slow), dropping frame to catch up.
2009-05-07 11:55:00.556 NVP: Video is 3.20982 frames behind audio (too
slow), dropping frame to catch up.
2009-05-07 11:55:00.559 NVP: Video is 3.08919 frames behind audio (too
slow), dropping frame to catch up.
2009-05-07 11:55:00.705 NVP: Video is 3.13379 frames behind audio (too
slow), dropping frame to catch up.
2009-05-07 11:55:00.808 NVP: Video is 3.20506 frames behind audio (too
slow), dropping frame to catch up.
2009-05-07 11:55:00.812 NVP: Video is 3.1081 frames behind audio (too
slow), dropping frame to catch up.
2009-05-07 11:55:00.923 NVP: Video is 3.02017 frames behind audio (too
slow), dropping frame to catch up.
2009-05-07 11:55:01.022 NVP: Video is 3.24981 frames behind audio (too
slow), dropping frame to catch up.
2009-05-07 11:55:01.026 NVP: Video is 3.23905 frames behind audio (too
slow), dropping frame to catch up

...and the video was jerky and had unwatchable tearing.  Oddly enough
1080i pre-recorded shows were just fine.  I'm currently using the new
fieldorder deinterlacer, but I got the same results when switching to
Bob x2, which has worked fine for me for years.

Luckily I had no problem downgrading back to 18314, and LiveTV is fine
now....maybe in about a week my heart will slow down a bit :D.

Unfortunately I couldn't leave it that way long enough to do much
debugging, as I really needed to have a working system.

Anyone have any ideas as to what change between those revs might have
caused that?

Tom


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