[mythtv-users] Loseless Transcode Fails

Christopher Meredith chmeredith at gmail.com
Fri Jul 9 18:30:37 UTC 2010


On Sun, Nov 22, 2009 at 6:39 PM, pyther <pyther at pyther.net> wrote:
> I have a recording that is 6.5GB. I have cut points set and I would like to
> transcode this file loosely. When I attempt to do this, it fails.
>
> Full mythbackend.log: http://pastebin.ca/1682894
>
> 2009-11-22 17:53:33.875 Converting frame #10 from B to I
> 2009-11-22 17:53:33.925 Converting frame #11 from P to I
> QString::arg: Argument missing: Frame 14 > 5. Corruption likely at pos: 5,
> 3021906360
> 2009-11-22 17:53:34.917 Frame 14 > 5. Corruption likely at pos: 5
> 2009-11-22 17:53:35.018 Inserting 9 I-Frames after #5
> 2009-11-22 17:53:35.042 Warning: partial frame found!
> 2009-11-22 17:53:35.102 Inserting 9 I-Frames after #2
> 2009-11-22 17:53:35.167 Inserting 5 I-Frames after #14
> QString::arg: Argument missing: Frame 20 > 19. Corruption likely at pos: 19,
> 3022067100
> 2009-11-22 17:53:35.200 Frame 20 > 19. Corruption likely at pos: 19
> 2009-11-22 17:53:35.275 Inserting 2 I-Frames after #19
> 2009-11-22 17:53:35.495 Inserting 6 I-Frames after #27
> 2009-11-22 17:53:35.574 Inserting 9 I-Frames after #2
> 2009-11-22 17:53:35.605 Warning: partial frame found!
> 2009-11-22 17:53:35.711 Inserting 6 I-Frames after #5
> 2009-11-22 17:53:35.759 Increasing ringbuffer size by 1019680 to avoid
> deadlock
> 2009-11-22 17:53:35.789 expectedPTS != expectedDTS+ptsIncrement
> 2009-11-22 17:53:35.821 Transcoding /home/myth/tv/The Great Escape -
> 2009-11-15, 11-00 PM - Untitled.mpg failed
> 2009-11-22 17:53:35.851 Deleting /home/myth/tv/The Great Escape -
> 2009-11-15, 11-00 PM - Untitled.mpg.tmp
> 2009-11-22 17:53:36.236 JobQueue: Transcode Errored: The Great Escape: High
> Quality (exit status 247, job status was "Errored")
> 2009-11-22 17:53:57.209 UPnpMedia: BuildMediaMap - no VideoStartupDir set,
>  skipping scan.
> 2009-11-22 17:55:03.637 AutoExpire: CalcParams(): Max required Free Space:
> 1.0 GB w/freq: 15 min
>
> Any help would be appreciated!

This is a little old but I'm running into the same thing using r25281.
I ran the following command on a QAM mpeg2 recording:
mythtranscode --chanid 2432 --starttime 2010-07-08-19-29-00 --mpeg2
--honorcutlist -o /mnt/sdd/test.mpg

Got this:
2010-07-09 13:29:24.776 Using runtime prefix = /usr/local
2010-07-09 13:29:24.776 Using configuration directory = /home/theophile/.mythtv
2010-07-09 13:29:24.777 Empty LocalHostName.
2010-07-09 13:29:24.789 New DB connection, total: 1
2010-07-09 13:29:24.793 Closing DB connection named 'DBManager0'
2010-07-09 13:29:24.795 Enabled verbose msgs: important
2010-07-09 13:29:24.833 mpeg_decode_postinit() failure
2010-07-09 13:29:24.834 mpeg_decode_postinit() failure
2010-07-09 13:29:24.834 mpeg_decode_postinit() failure
2010-07-09 13:29:24.835 mpeg_decode_postinit() failure
2010-07-09 13:29:24.835 mpeg_decode_postinit() failure
2010-07-09 13:29:24.836 mpeg_decode_postinit() failure
2010-07-09 13:29:24.836 mpeg_decode_postinit() failure
2010-07-09 13:29:24.836 mpeg_decode_postinit() failure
2010-07-09 13:29:24.836 mpeg_decode_postinit() failure
2010-07-09 13:29:24.837 mpeg_decode_postinit() failure
2010-07-09 13:29:24.837 mpeg_decode_postinit() failure
2010-07-09 13:29:24.837 mpeg_decode_postinit() failure
2010-07-09 13:29:24.837 mpeg_decode_postinit() failure
2010-07-09 13:29:24.838 mpeg_decode_postinit() failure
Mux rate: 81.70 Mbit/s
2010-07-09 13:29:25.828 expectedPTS != expectedDTS+ptsIncrement

FWIW, I did not have the issue before upgrading from r24517


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