[mythtv-users] Corrupted recording, need help with diagnosis...

Douglas Peale Douglas_Peale at comcast.net
Wed Nov 10 08:25:55 UTC 2010


"House" was corrupted yesterday, not just a little bit, but continuously interrupted by pixelation, sound glitches and skipped
time. So bad it was unwatchable.
This was recorded on an HDHomeRun on a clear QAM channel.

I have included an excerpt from the backend log that shows the beginning of the recording, and a representative sample of the
errors reported. Those errors continued at a nearly constant rate for the whole hour and 20 minutes of the recording.

What gets odd about this is that "The Event" recorded without problems. It started recording 20 minutes before the "house"
recording ended, and it is on the same frequency ID as the house recording.
"The Event" used the other tuner in the HDHomeRun box though.

The HDHomeRun Config reports 99-100% signal strength, a signal quality hovering around 97-100%, and a symbol quality at 100% for
both tuners on this station.

This is the second time I have had a recording corrupted in this way. The first was a recording of "The Mentalist", so the
problem is not tied to FOX. Most of my recordings are on FOX or CBS, so a sample of 2 does not tie the problem to this frequency
ID though so far it has only happened on this frequency ID.
Most recordings from channels on this frequency ID are clean.
I'm not even sure I can tie the problem to the tuner as most recordings are done with the tuner where the problem occurred.

I would appreciate it if someone could translate the error messages into something comprehensible so I have a clue where I
should be looking for the problem.

2010-11-08 19:50:01.801 Started recording: House:"Office Politics": channel 1021 on cardid 2, sourceid 1
2010-11-08 19:50:01.973 ProgramInfo(1021_20101108195000.mpg), Error: GetPlaybackURL: '1021_20101108195000.mpg' should be local,
but it can not be found.
2010-11-08 19:50:02.080 ProgramInfo(1021_20101108195000.mpg), Error: GetPlaybackURL: '1021_20101108195000.mpg' should be local,
but it can not be found.
2010-11-08 19:50:02.091 ProgramInfo(1021_20101108195000.mpg), Error: GetPlaybackURL: '1021_20101108195000.mpg' should be local,
but it can not be found.
2010-11-08 19:50:02.512 Updating status for House:"Office Politics" on cardid 2 (Tuning => Recording)
2010-11-08 19:50:02.568 TVRec(2): rec->GetPathname(): '/var/lib/mythtv/recordings/1021_20101108195000.mpg'
2010-11-08 19:50:05.851 JobQueue: Commercial Detection Starting for House:"Office Politics" recorded from channel 1021 at
2010-11-08T19:50:00
2010-11-08 19:50:05.956 Using runtime prefix = /usr
2010-11-08 19:50:05.966 Using configuration directory = /home/mythtv/.mythtv
2010-11-08 19:50:05.977 Empty LocalHostName.
2010-11-08 19:50:05.987 Using localhost value of Compromise
2010-11-08 19:50:06.021 New DB connection, total: 1
2010-11-08 19:50:06.041 Connected to database 'mythconverg' at host: localhost
2010-11-08 19:50:06.061 Closing DB connection named 'DBManager0'
2010-11-08 19:50:06.069 Connected to database 'mythconverg' at host: localhost
2010-11-08 19:50:06.088 Current locale en_US
2010-11-08 19:50:06.108 Reading locale defaults from /usr/share/mythtv//locales/en_us.xml
2010-11-08 19:50:06.132 Loading en_us translation for module mythfrontend
2010-11-08 19:50:06.172 MythCoreContext: Connecting to backend server: 192.168.63.3:6543 (try 1 of 1)
2010-11-08 19:50:06.180 Using protocol version 63
2010-11-08 19:50:06.188 MainServer::ANN Playback
2010-11-08 19:50:06.208 adding: Compromise as a client (events: 0)
2010-11-08 19:50:06.220 MainServer::ANN Monitor
2010-11-08 19:50:06.220 MainServer::ANN Monitor
2010-11-08 19:50:06.268 adding: Compromise as a client (events: 1)
2010-11-08 19:50:06.288 adding: Compromise as a client (events: 1)
2010-11-08 19:50:30.633 AFD: Opened codec 0x7effe000bfe0, id(MPEG2VIDEO) type(Video)
2010-11-08 19:50:30.637 AFD: codec AC3 has 6 channels
2010-11-08 19:50:30.646 AFD: Opened codec 0x7effe0007950, id(AC3) type(Audio)
2010-11-08 19:50:30.656 AFD: codec AC3 has 2 channels
2010-11-08 19:50:30.677 AFD: Opened codec 0x7effe0008190, id(AC3) type(Audio)
2010-11-08 19:50:30.698 MythCoreContext: Connecting to backend server: 192.168.63.3:6543 (try 1 of 1)
2010-11-08 19:50:30.716 Using protocol version 63
2010-11-08 19:50:30.728 MainServer::ANN Playback
2010-11-08 19:50:30.746 adding: Compromise as a client (events: 0)
2010-11-08 19:50:30.770 RecBase(2:2): GetKeyframePositions(556,9223372036854775807,#12) out of 97
2010-11-08 19:53:07.281 AutoExpire: CalcParams(): Max required Free Space: 3.0 GB w/freq: 14 min
2010-11-08 20:07:07.331 AutoExpire: CalcParams(): Max required Free Space: 3.0 GB w/freq: 14 min
2010-11-08 20:07:16.497 UPnpMedia: BuildMediaMap VIDEO scan starting in :/var/lib/mythtv/videos:
2010-11-08 20:07:16.518 UPnpMedia: BuildMediaMap Done. Found 0 objects
2010-11-08 20:10:55.264 [mpeg2video @ 0x7efff7c285c0]invalid cbp at 61 27
2010-11-08 20:10:55.286 [mpeg2video @ 0x7efff7c285c0]ac-tex damaged at 15 32
2010-11-08 20:10:55.307 [mpeg2video @ 0x7efff7c285c0]Warning MVs not available
2010-11-08 20:10:55.340 RecBase(2:2): GetKeyframePositions(599,9223372036854775807,#6759) out of 6856
2010-11-08 20:10:55.395 [mpeg2video @ 0x7efff7c285c0]invalid mb type in I Frame at 2 1
2010-11-08 20:10:55.408 [mpeg2video @ 0x7efff7c285c0]ac-tex damaged at 41 5
2010-11-08 20:10:55.427 [mpeg2video @ 0x7efff7c285c0]Warning MVs not available
2010-11-08 20:10:55.476 [mpeg2video @ 0x7efff7c285c0]skipped MB in I frame at 38 8
2010-11-08 20:10:55.488 [mpeg2video @ 0x7efff7c285c0]Warning MVs not available
2010-11-08 20:10:55.518 [mpeg2video @ 0x7efff7c285c0]invalid mb type in B Frame at 70 44
2010-11-08 20:10:55.529 [mpeg2video @ 0x7efff7c285c0]slice mismatch
2010-11-08 20:10:55.547 [mpeg2video @ 0x7efff7c285c0]slice mismatch
2010-11-08 20:10:55.579 [mpeg2video @ 0x7efff7c285c0]mb incr damaged
2010-11-08 20:10:55.587 [mpeg2video @ 0x7efff7c285c0]slice mismatch
2010-11-08 20:10:55.606 [mpeg2video @ 0x7efff7c285c0]mb incr damaged
2010-11-08 20:10:55.627 [mpeg2video @ 0x7efff7c285c0]mb incr damaged
2010-11-08 20:10:55.666 [mpeg2video @ 0x7efff7c285c0]mb incr damaged
2010-11-08 20:10:55.687 [mpeg2video @ 0x7efff7c285c0]slice mismatch
2010-11-08 20:10:55.707 [mpeg2video @ 0x7efff7c285c0]slice mismatch
2010-11-08 20:10:55.730 [mpeg2video @ 0x7efff7c285c0]skipped MB in I frame at 8 24
2010-11-08 20:10:55.748 [mpeg2video @ 0x7efff7c285c0]ac-tex damaged at 17 27
2010-11-08 20:10:55.770 [mpeg2video @ 0x7efff7c285c0]skipped MB in I frame at 38 8
2010-11-08 20:10:55.793 [mpeg2video @ 0x7efff7c285c0]ac-tex damaged at 26 16
2010-11-08 20:10:55.809 [mpeg2video @ 0x7efff7c285c0]ac-tex damaged at 26 16
2010-11-08 20:10:55.823 [mpeg2video @ 0x7efff7c285c0]invalid cbp at 12 26
2010-11-08 20:10:55.870 [mpeg2video @ 0x7efff7c285c0]ac-tex damaged at 26 16
2010-11-08 20:10:55.879 [mpeg2video @ 0x7efff7c285c0]invalid cbp at 12 26
2010-11-08 20:10:55.925 [mpeg2video @ 0x7efff7c285c0]invalid mb type in I Frame at 2 15
2010-11-08 20:10:55.964 [mpeg2video @ 0x7efff7c285c0]invalid mb type in I Frame at 2 25
2010-11-08 20:10:55.977 [mpeg2video @ 0x7efff7c285c0]skipped MB in I frame at 1 26
2010-11-08 20:10:56.017 [mpeg2video @ 0x7efff7c285c0]invalid mb type in B Frame at 35 26
2010-11-08 20:10:56.026 [mpeg2video @ 0x7efff7c285c0]ac-tex damaged at 35 17
2010-11-08 20:10:56.037 [mpeg2video @ 0x7efff7c285c0]ac-tex damaged at 24 21
2010-11-08 20:10:56.074 [mpeg2video @ 0x7efff7c285c0]ac-tex damaged at 2 28
2010-11-08 20:10:56.088 [mpeg2video @ 0x7efff7c285c0]skipped MB in I frame at 60 19
2010-11-08 20:10:56.149 [mpeg2video @ 0x7efff7c285c0]ac-tex damaged at 69 42
2010-11-08 20:10:56.163 [mpeg2video @ 0x7efff7c285c0]invalid cbp at 0 44
2010-11-08 20:10:56.171 [mpeg2video @ 0x7efff7c285c0]ac-tex damaged at 40 1
2010-11-08 20:10:56.205 [mpeg2video @ 0x7efff7c285c0]invalid mb type in I Frame at 55 8
2010-11-08 20:10:56.235 [mpeg2video @ 0x7efff7c285c0]invalid mb type in I Frame at 2 9
2010-11-08 20:10:56.353 [mpeg2video @ 0x7efff7c285c0]slice mismatch
2010-11-08 20:10:56.359 [mpeg2video @ 0x7efff7c285c0]ac-tex damaged at 2 42
2010-11-08 20:10:56.393 [mpeg2video @ 0x7efff7c285c0]ac-tex damaged at 41 35
2010-11-08 20:10:56.446 [mpeg2video @ 0x7efff7c285c0]ac-tex damaged at 42 12
2010-11-08 20:10:56.488 [mpeg2video @ 0x7efff7c285c0]end mismatch left=368 4A8137
2010-11-08 20:10:56.533 AFD: Audio stream changed
2010-11-08 20:10:56.542 [mpeg2video @ 0x7efff7c285c0]ac-tex damaged at 62 44
2010-11-08 20:10:56.553 [mpeg2video @ 0x7efff7c285c0]skipped MB in I frame at 44 10
2010-11-08 20:10:56.613 [mpeg2video @ 0x7efff7c285c0]ac-tex damaged at 53 36
2010-11-08 20:10:56.617 [mpeg2video @ 0x7efff7c285c0]skipped MB in I frame at 68 38
2010-11-08 20:10:56.627 [mpeg2video @ 0x7efff7c285c0]ac-tex damaged at 66 43
2010-11-08 20:10:56.661 [mpeg2video @ 0x7efff7c285c0]ac-tex damaged at 7 39
2010-11-08 20:10:56.676 [mpeg2video @ 0x7efff7c285c0]invalid mb type in I Frame at 48 41
2010-11-08 20:10:56.758 [mpeg2video @ 0x7efff7c285c0]ac-tex damaged at 17 38
2010-11-08 20:10:56.766 [mpeg2video @ 0x7efff7c285c0]invalid cbp at 40 33
2010-11-08 20:10:56.807 [mpeg2video @ 0x7efff7c285c0]ac-tex damaged at 4 23
2010-11-08 20:10:56.817 [mpeg2video @ 0x7efff7c285c0]skipped MB in I frame at 66 18
2010-11-08 20:10:56.842 [mpeg2video @ 0x7efff7c285c0]skipped MB in I frame at 57 41
2010-11-08 20:10:56.847 [mpeg2video @ 0x7efff7c285c0]invalid mb type in I Frame at 1 2
2010-11-08 20:10:56.866 [mpeg2video @ 0x7efff7c285c0]ac-tex damaged at 71 44
2010-11-08 20:10:56.921 [mpeg2video @ 0x7efff7c285c0]invalid mb type in I Frame at 2 4
2010-11-08 20:10:56.928 [mpeg2video @ 0x7efff7c285c0]invalid mb type in I Frame at 10 8
2010-11-08 20:10:56.998 [mpeg2video @ 0x7efff7c285c0]ac-tex damaged at 5 17
2010-11-08 20:10:57.079 [mpeg2video @ 0x7efff7c285c0]invalid cbp at 1 1
2010-11-08 20:10:57.102 [mpeg2video @ 0x7efff7c285c0]skipped MB in I frame at 59 3
2010-11-08 20:10:57.108 [mpeg2video @ 0x7efff7c285c0]ac-tex damaged at 9 8
2010-11-08 20:10:57.138 [mpeg2video @ 0x7efff7c285c0]skipped MB in I frame at 55 34
2010-11-08 20:10:57.153 [mpeg2video @ 0x7efff7c285c0]skipped MB in I frame at 59 3
2010-11-08 20:10:57.156 [mpeg2video @ 0x7efff7c285c0]ac-tex damaged at 9 8


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