[mythtv-commits] Ticket #3001: MPEG-4 decode errors as of [12645]
MythTV
mythtv at cvs.mythtv.org
Tue Jan 30 00:04:10 UTC 2007
#3001: MPEG-4 decode errors as of [12645]
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Reporter: bjm | Owner: janne
Type: defect | Status: new
Priority: major | Milestone: unknown
Component: mythtv | Version: head
Severity: medium | Resolution:
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Comment (by bjm):
janne, could you address this or get ijr's help? Else this ffmpeg update
will need to be reverted.
danielk, this 1 minute was a broad scale rather than an avg arrival rate.
I neglected to mention that the amount of motion affected the frequency. I
don't use any of the four checkbox encoding options.
I first saw this on a basketball game where this would happen 2 or more
times per minute sometimes in clusters of several in a few seconds.
Stationary scenes rarely has these errors but it dose seem to happen.
The error in decoding a frame seems to be consistent. When a flash appears
or a message is logged, you can pause, "<" to go back by seconds before
the bad frame then "->" (right arrow) to frame advance to the broken
frame. The message will repeat each time the frame is drawn and the same
artifacts will appear.
In a test right now, I had a case where the error message appeared but
there were no visible artifacts that I could find. However, other frames,
usually during high motion, can be spectacularly broken.
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Ticket URL: <http://svn.mythtv.org/trac/ticket/3001#comment:3>
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