[mythtv-commits] Ticket #9801: mythtranscode produces unusable output when transcoding mpeg4->mpeg4 with cutlists

MythTV noreply at mythtv.org
Thu Jul 28 22:42:18 UTC 2011


#9801: mythtranscode produces unusable output when transcoding mpeg4->mpeg4 with
cutlists
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 Reporter:  mythtv@…                |          Owner:
     Type:  Bug Report - General    |         Status:  closed
 Priority:  minor                   |      Milestone:  unknown
Component:  MythTV - Mythtranscode  |        Version:  0.24-fixes
 Severity:  medium                  |     Resolution:  Duplicate
 Keywords:  mythtranscode cutlist   |  Ticket locked:  0
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Comment (by mythtv@…):

 Not sure why you classify this as a duplicate of #8864 since the context
 and symptoms seem quite different -- the only thing in common seems to be
 an issue with transcoding NUV->NUV.

 #8864 says:
 "When running mythtranscode on a HD recording using the "Low Quality"
 profile and MPEG4, I have had a number of corrupted recordings. The output
 file sizes are approximately 1/3 of their normal size for typical
 recordings. The audio appears fine, however all but a few sporadic frames
 of video are gone/corrupted."

 This bug report is *specific* to cutlists and generates files with
 *neither* audio nor video -- the entire file length is about 150KB which
 is nothing like 1/3 the file length.

 I suspect that the bugs are different and am not sure why one would think
 that they are the same except at the highest possible level of there being
 various issues with mythtranscode when transcoding NUV->NUV.

 Again to be clear, #8864 is about data corruption/loss with transcoding,
 this bug #9801 is about cutlists causing transcoding to abort without
 doing any transcoding -- I have not encountered *any* issues with pure
 NUV->NUV transcoding with no cutlist.

 Please either unmark this as a duplicate or generalize #8864 to include
 these very different additional symptoms. Otherwise, I fear that one may
 fix #8864 and have no clue about this issue with cutlists.

-- 
Ticket URL: <http://code.mythtv.org/trac/ticket/9801#comment:12>
MythTV <http://code.mythtv.org/trac>
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