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

Wed Nov 10 18:36:53 UTC 2010

On 11/10/2010 03:25 AM, Douglas Peale wrote:
> "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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>
You didn't post the specs of your machine,but looking at your log,it 
appears you are using commercial detection at the same time as you are 
recording... There was a person a few weeks ago that had the same 
problem..I suggested turning off commercial detection until the program 
is recorded...That solved his problem... It don't cost anything to give 
it a try..