[mythtv-commits] Ticket #8864: Trunk unable to playback MPEG4 files created by mythtranscode
MythTV
mythtv at cvs.mythtv.org
Mon Sep 13 02:33:45 UTC 2010
#8864: Trunk unable to playback MPEG4 files created by mythtranscode
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Reporter: nate <svndotmythtvdotorg1@…> | Owner: janne
Type: defect | Status: infoneeded
Priority: major | Milestone: 0.24
Component: MythTV - Video Playback | Version: Unspecified
Severity: medium | Resolution:
Keywords: | Ticket locked: 0
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Comment (by nate <svndotmythtvdotorg1@…>):
Hi Kenni,
I can confirm that the corrupted recordings do not play in mplayer, and
the corruption issue appears to be specific to transcoding the same
recording using 'Low Quality / MPEG4' twice. I enabled the 'save original
recording when transcoding option' and manually scheduled a new, good
recording tonight for transcode to MPEG4. The first transcode worked
correctly. I then scheduled the same recording for transcoding to MPEG4
once again. After the second transcoding, the resulting recording is
corrupted and there is explicit evidence for data loss judging by the
output filesize. So we can update the description to express that this is
specific to transcoding twice.
But you are correct, in that these two issues might be related. If the
MPEG4 decoding routines are common for both playback and transcoding, then
it makes sense that if playback is affected then transcoding will be
incorrect as well.
This might sound strange that one would transcode the same recording
twice.. This situation arose because I currently have to manually schedule
transcoding and I sometimes mistakenly do a recording twice in error.
When I have previously done this by accident, the resulting transcode was
fine (however the filesize obviously didn't change).
Thanks for your help.
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Ticket URL: <http://svn.mythtv.org/trac/ticket/8864#comment:7>
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