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

[MythTV]

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

 I am running using the atrpms version (0.24-272) of MythTV under
 Fedora.

 The attached log above shows all the verbose log information and should
 capture
 any of the messaged errors (though there don't seem to be any related
 to this bug).

 Note that the behavior can be replicated by running mythtranscode
 directly from the CLI (see the original post). I did not however check
 the shell exit code at the time. If that would be helpful, I could run
 it again and check it.

 Regarding your mention of MythTV checking exit codes before
 overwriting the original, one suggestion for future versions of the
 code may be to also sanity check the file size to avoid obvious
 destructive overwriting of original recordings. For example, if the
 output size is less than a few megabytes then either don't overwrite
 (and signal an error) or overwrite but rename original rather than
 deleting it.

 Note such an added sanity check would have caught this bug where the
 output files are 100-150KB. It also would have caught rare unexplained
 cases I have observed in the past (unrelated to this bug) where the
 output file is zero length.

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Ticket URL: <http://code.mythtv.org/trac/ticket/9801#comment:9>
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