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Ticket #7630: backend crashes when making h264 previews

  

 
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mythtv at cvs

Nov 21, 2009, 2:00 PM

Post #1 of 11 (1070 views)
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Ticket #7630: backend crashes when making h264 previews
#7630: backend crashes when making h264 previews
------------------------------+---------------------------------------------
Reporter: kl@… | Owner: ijr
Type: defect | Status: new
Priority: critical | Milestone: unknown
Component: MythTV - General | Version: 0.22
Severity: high | Mlocked: 0
------------------------------+---------------------------------------------
I just setup mythtv 0.22+fixes from svn (from 20091118) on my qnap ts-119
backend.

It seems to work fine - execpt I noticed several shows wasn't recorded in
full, even though myth thought it was.

I noticed in the logs, that mythbackend had died at the time the
recordings had stopped - the text in the logs was this:
2009-11-20 23:40:14.626 [h264 @ 0x40e6b478]non-existing PPS referenced
2009-11-20 23:40:14.627 [h264 @ 0x40e6b478]non-existing SPS 23 referenced
in buffering period
2009-11-20 23:40:14.629 [h264 @ 0x40e6b478]non-existing PPS referenced
2009-11-20 23:40:14.630 [h264 @ 0x40e6b478]non-existing SPS 27 referenced
in buffering period
2009-11-20 23:40:14.632 [h264 @ 0x40e6b478]non-existing PPS referenced
2009-11-20 23:40:14.634 [h264 @ 0x40e6b478]non-existing SPS 7 referenced
in buffering period
2009-11-20 23:40:14.639 [h264 @ 0x40e6b478]non-existing PPS referenced
2009-11-20 23:40:14.645 [h264 @ 0x40e6b478]non-existing SPS 8 referenced
in buffering period
2009-11-20 23:40:14.646 [h264 @ 0x40e6b478]non-existing PPS referenced
2009-11-20 23:40:14.648 [h264 @ 0x40e6b478]non-existing SPS 9 referenced
in buffering period
2009-11-20 23:40:14.649 [h264 @ 0x40e6b478]non-existing PPS referenced
2009-11-20 23:40:14.651 [h264 @ 0x40e6b478]non-existing SPS 10 referenced
in buffering period
2009-11-20 23:40:14.653 [h264 @ 0x40e6b478]non-existing PPS referenced
2009-11-20 23:40:14.655 [h264 @ 0x40e6b478]non-existing SPS 11 referenced
in buffering period
2009-11-20 23:40:14.656 [h264 @ 0x40e6b478]non-existing PPS referenced
2009-11-20 23:40:14.658 [h264 @ 0x40e6b478]non-existing SPS 12 referenced
in buffering period
2009-11-20 23:40:14.659 [h264 @ 0x40e6b478]non-existing PPS referenced
2009-11-20 23:40:14.661 [h264 @ 0x40e6b478]non-existing SPS 13 referenced
in buffering period
2009-11-20 23:40:14.663 [h264 @ 0x40e6b478]non-existing PPS referenced
2009-11-20 23:40:14.678 [h264 @ 0x40e6b478]non-existing SPS 14 referenced
in buffering period
2009-11-20 23:40:14.680 [h264 @ 0x40e6b478]non-existing PPS referenced
2009-11-20 23:40:14.725 [h264 @ 0x40e6b478]number of reference frames
exceeds max (probably corrupt input), discarding one
2009-11-20 23:40:14.727 [h264 @ 0x40e6b478]number of reference frames
exceeds max (probably corrupt input), discarding one
2009-11-20 23:40:14.728 [h264 @ 0x40e6b478]number of reference frames
exceeds max (probably corrupt input), discarding one
2009-11-20 23:40:15.273 [h264 @ 0x40e6b478]number of reference frames
exceeds max (probably corrupt input), discarding one
2009-11-20 23:40:15.276 [h264 @ 0x40e6b478]number of reference frames
exceeds max (probably corrupt input), discarding one
2009-11-20 23:40:15.277 [h264 @ 0x40e6b478]number of reference frames
exceeds max (probably corrupt input), discarding one
2009-11-20 23:40:15.948 [h264 @ 0x40e6b478]number of reference frames
exceeds max (probably corrupt input), discarding one
2009-11-20 23:40:16.125 [h264 @ 0x40e6b478]number of reference frames
exceeds max (probably corrupt input), discarding one
2009-11-20 23:40:16.636 [h264 @ 0x40e6b478]mmco: unref short failure
2009-11-20 23:40:18.152 Preview: Grabbed preview
'/home/mythtv/storage/1006_20091120221500.mpg' 1280x720 [at] 64
2009-11-20 23:42:49.870 [mpeg2video @ 0x40e6b478]ac-tex damaged at 21 16
2009-11-20 23:42:49.875 [mpeg2video @ 0x40e6b478]Warning MVs not available
2009-11-20 23:42:52.652 myth_system('/usr/bin/mythbackend --generate-
preview 0x0 --chanid 1002 --starttime 20091120220500 '): Error: Can not
redirect /dev/null to standard input, failed to open.
eno: Bad file descriptor (9)
2009-11-20 23:42:54.045 mythbackend version: branches/release-0-22-fixes
[svn20091118] www.mythtv.org
2009-11-20 23:42:54.053 Using runtime prefix = /usr
...

I'm guessing there's a bug in the preview grabbing functionality for mpeg4
dvb-t streams somewhere.

I'm currently looking for a way to disable generating previews to see if
this fixes it.

Pls. advise how I can help with more debugging info.

--
Ticket URL: <http://svn.mythtv.org/trac/ticket/7630>
MythTV <http://www.mythtv.org/>
MythTV
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mythtv at cvs

Nov 21, 2009, 2:17 PM

Post #2 of 11 (1032 views)
Permalink
Re: Ticket #7630: backend crashes when making h264 previews [In reply to]
#7630: backend crashes when making h264 previews
------------------------------+---------------------------------------------
Reporter: kl@… | Owner: ijr
Type: defect | Status: new
Priority: critical | Milestone: unknown
Component: MythTV - General | Version: 0.22
Severity: high | Mlocked: 0
------------------------------+---------------------------------------------

Comment(by kl@…):

It happened again the next day (21/11) - also on an mpeg4 stream in HD
(don't know exactly what format - expect 720p). It only record 18 minutes
and 40 seconds, at least that's what's available when playing the
recording.

The log says this, exactly when the recording actually stopped (18 minutes
in) - and the recording is without sound this time (probably some other
bug?):
2009-11-21 07:30:03.782 Started recording: Hurlum Haj "(Shark Bait - the
reef) Amerikansk tegnefilm fra 2006.Den lille fisk Per kommer ud på sit
livs rejse, da hans
forældre bliver fa": channel 1004 on cardid 1, sourceid 1
....
2009-11-21 07:47:06.506 Current MythTV Schema Version (DBSchemaVer): 1244
2009-11-21 07:47:06.519 New DB connection, total: 2
2009-11-21 07:47:06.530 Connected to database 'mythconverg' at host:
localhost
2009-11-21 07:47:06.737 Filter dir '/usr/lib/mythtv/filters' doesn't
exist?
2009-11-21 07:47:06.992 [NULL @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:06.994 [NULL @ 0x40e6b478]non-existing PPS referenced
2009-11-21 07:47:07.081 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:07.082 [h264 @ 0x40e6b478]non-existing PPS 0 referenced
2009-11-21 07:47:07.084 [h264 @ 0x40e6b478]decode_slice_header error
2009-11-21 07:47:07.085 [h264 @ 0x40e6b478]no frame!
2009-11-21 07:47:07.087 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:07.088 [h264 @ 0x40e6b478]non-existing PPS referenced
2009-11-21 07:47:07.091 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:07.092 [h264 @ 0x40e6b478]B picture before any
references, skipping
2009-11-21 07:47:07.093 [h264 @ 0x40e6b478]decode_slice_header error
2009-11-21 07:47:07.094 [h264 @ 0x40e6b478]no frame!
2009-11-21 07:47:07.112 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:07.114 [h264 @ 0x40e6b478]non-existing PPS referenced
2009-11-21 07:47:07.117 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:07.118 [h264 @ 0x40e6b478]B picture before any
references, skipping
2009-11-21 07:47:07.119 [h264 @ 0x40e6b478]decode_slice_header error
2009-11-21 07:47:07.121 [h264 @ 0x40e6b478]no frame!
2009-11-21 07:47:07.125 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:07.126 [h264 @ 0x40e6b478]non-existing PPS referenced
2009-11-21 07:47:07.129 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:07.143 [h264 @ 0x40e6b478]non-existing PPS 0 referenced
2009-11-21 07:47:07.144 [h264 @ 0x40e6b478]decode_slice_header error
2009-11-21 07:47:07.145 [h264 @ 0x40e6b478]no frame!
2009-11-21 07:47:07.195 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:07.197 [h264 @ 0x40e6b478]non-existing PPS referenced
2009-11-21 07:47:07.200 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:07.201 [h264 @ 0x40e6b478]B picture before any
references, skipping
2009-11-21 07:47:07.202 [h264 @ 0x40e6b478]decode_slice_header error
2009-11-21 07:47:07.203 [h264 @ 0x40e6b478]no frame!
2009-11-21 07:47:07.209 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:07.210 [h264 @ 0x40e6b478]non-existing PPS referenced
2009-11-21 07:47:07.215 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:07.219 [h264 @ 0x40e6b478]B picture before any
references, skipping
2009-11-21 07:47:07.369 [h264 @ 0x40e6b478]decode_slice_header error
2009-11-21 07:47:07.440 [h264 @ 0x40e6b478]no frame!
2009-11-21 07:47:07.443 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:07.445 [h264 @ 0x40e6b478]non-existing PPS referenced
2009-11-21 07:47:07.449 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:07.451 [h264 @ 0x40e6b478]non-existing PPS 0 referenced
2009-11-21 07:47:07.454 [h264 @ 0x40e6b478]decode_slice_header error
2009-11-21 07:47:07.470 [h264 @ 0x40e6b478]no frame!
2009-11-21 07:47:07.501 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:07.504 [h264 @ 0x40e6b478]non-existing PPS referenced
2009-11-21 07:47:07.511 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:07.513 [h264 @ 0x40e6b478]B picture before any
references, skipping
2009-11-21 07:47:07.514 [h264 @ 0x40e6b478]decode_slice_header error
2009-11-21 07:47:07.515 [h264 @ 0x40e6b478]no frame!
2009-11-21 07:47:07.533 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:07.554 [h264 @ 0x40e6b478]non-existing PPS referenced
2009-11-21 07:47:07.558 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:07.559 [h264 @ 0x40e6b478]B picture before any
references, skipping
2009-11-21 07:47:07.562 [h264 @ 0x40e6b478]decode_slice_header error
2009-11-21 07:47:07.563 [h264 @ 0x40e6b478]no frame!
2009-11-21 07:47:07.568 [h264 @ 0x40e6b478]non-existing SPS 1 referenced
in buffering period
2009-11-21 07:47:07.571 [h264 @ 0x40e6b478]non-existing SPS 1 referenced
in buffering period
2009-11-21 07:47:07.778 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:07.785 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:07.801 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:07.822 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:07.829 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:07.846 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:07.851 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:07.858 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:07.890 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:07.894 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:07.901 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:08.031 AFD: Opened codec 0x1f9d50, id(H264) type(Video)
2009-11-21 07:47:08.033 AFD: codec AAC/LATM has 2 channels
2009-11-21 07:47:08.035 AFD: Opened codec 0x1fa2d0, id(AAC/LATM)
type(Audio)
2009-11-21 07:47:08.337 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:08.339 [h264 @ 0x40e6b478]non-existing PPS referenced
2009-11-21 07:47:08.344 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:08.354 [h264 @ 0x40e6b478]non-existing PPS referenced
2009-11-21 07:47:08.356 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:08.358 [h264 @ 0x40e6b478]non-existing PPS referenced
2009-11-21 07:47:08.366 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:08.367 [h264 @ 0x40e6b478]non-existing PPS referenced
2009-11-21 07:47:08.368 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:08.377 [h264 @ 0x40e6b478]non-existing PPS referenced
2009-11-21 07:47:08.388 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:08.391 [h264 @ 0x40e6b478]non-existing PPS referenced
2009-11-21 07:47:08.393 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:08.409 [h264 @ 0x40e6b478]non-existing PPS referenced
2009-11-21 07:47:08.411 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:08.413 [h264 @ 0x40e6b478]non-existing PPS referenced
2009-11-21 07:47:08.415 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:08.416 [h264 @ 0x40e6b478]non-existing PPS referenced
2009-11-21 07:47:08.418 [h264 @ 0x40e6b478]non-existing SPS 1 referenced
in buffering period
2009-11-21 07:47:08.541 [h264 @ 0x40e6b478]non-existing SPS 1 referenced
in buffering period
2009-11-21 07:47:08.795 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:08.799 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:08.811 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:08.813 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:08.815 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:08.818 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:08.819 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:08.821 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:08.823 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:08.826 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:08.828 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:08.843 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:08.845 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:08.848 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:08.851 [h264 @ 0x40e6b478]non-existing SPS 1 referenced
in buffering period
2009-11-21 07:47:08.854 [h264 @ 0x40e6b478]non-existing SPS 1 referenced
in buffering period
2009-11-21 07:47:08.855 [h264 @ 0x40e6b478]number of reference frames
exceeds max (probably corrupt input), discarding one
2009-11-21 07:47:08.857 [h264 @ 0x40e6b478]number of reference frames
exceeds max (probably corrupt input), discarding one
2009-11-21 07:47:08.858 [h264 @ 0x40e6b478]number of reference frames
exceeds max (probably corrupt input), discarding one
2009-11-21 07:47:08.860 [h264 @ 0x40e6b478]number of reference frames
exceeds max (probably corrupt input), discarding one
2009-11-21 07:47:09.042 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:09.043 [h264 @ 0x40e6b478]non-existing PPS referenced
2009-11-21 07:47:09.044 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:09.046 [h264 @ 0x40e6b478]B picture before any
references, skipping
2009-11-21 07:47:09.048 [h264 @ 0x40e6b478]decode_slice_header error
2009-11-21 07:47:09.049 [h264 @ 0x40e6b478]no frame!
2009-11-21 07:47:09.050 AFD Error: Unknown decoding error
2009-11-21 07:47:09.069 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:09.087 [h264 @ 0x40e6b478]non-existing PPS referenced
2009-11-21 07:47:09.089 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:09.090 [h264 @ 0x40e6b478]B picture before any
references, skipping
2009-11-21 07:47:09.091 [h264 @ 0x40e6b478]decode_slice_header error
2009-11-21 07:47:09.093 [h264 @ 0x40e6b478]no frame!
2009-11-21 07:47:09.094 AFD Error: Unknown decoding error
2009-11-21 07:47:09.096 [h264 @ 0x40e6b478]non-existing SPS 1 referenced
in buffering period
2009-11-21 07:47:09.100 [h264 @ 0x40e6b478]non-existing SPS 1 referenced
in buffering period
2009-11-21 07:47:09.266 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:09.268 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:09.446 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:09.448 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:09.614 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:09.681 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:09.864 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:09.867 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:10.048 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:10.049 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:10.339 [h264 @ 0x40e6b478]non-existing SPS 1 referenced
in buffering period
2009-11-21 07:47:10.342 [h264 @ 0x40e6b478]non-existing SPS 1 referenced
in buffering period
2009-11-21 07:47:10.525 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:10.528 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:10.686 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:10.781 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:10.962 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:10.963 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:11.165 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:11.169 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:11.327 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:11.328 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:11.487 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:11.489 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:11.741 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:11.743 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:11.929 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:11.931 [h264 @ 0x40e6b478]non-existing SPS 31 referenced
in buffering period
2009-11-21 07:47:12.146 Preview: Grabbed preview
'/home/mythtv/storage/1004_20091121073000.mpg' 704x576 [at] 64
2009-11-21 07:54:33.087 UPnpMedia: BuildMediaMap - no VideoStartupDir set,
skipping scan.
2009-11-21 07:55:43.788 AutoExpire: CalcParams(): Max required Free Space:
3.0 GB w/freq: 15 min
2009-11-21 07:56:08.622 Reschedule requested for id -1.

--
Ticket URL: <http://svn.mythtv.org/trac/ticket/7630#comment:1>
MythTV <http://www.mythtv.org/>
MythTV
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mythtv at cvs

Nov 21, 2009, 3:05 PM

Post #3 of 11 (1010 views)
Permalink
Re: Ticket #7630: backend crashes when making h264 previews [In reply to]
#7630: backend crashes when making h264 previews
------------------------------+---------------------------------------------
Reporter: kl@… | Owner: ijr
Type: defect | Status: infoneeded_new
Priority: trivial | Milestone: unknown
Component: MythTV - General | Version: 0.22
Severity: low | Mlocked: 0
------------------------------+---------------------------------------------
Changes (by danielk):

* priority: critical => trivial
* status: new => infoneeded_new
* severity: high => low


Comment:

Please provide a short sample which causes the preview generator to crash
along with a backtrace as per the TicketHowTo

--
Ticket URL: <http://svn.mythtv.org/trac/ticket/7630#comment:2>
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mythtv at cvs

Nov 21, 2009, 10:31 PM

Post #4 of 11 (997 views)
Permalink
Re: Ticket #7630: backend crashes when making h264 previews [In reply to]
#7630: backend crashes when making h264 previews
------------------------------+---------------------------------------------
Reporter: kl@… | Owner: ijr
Type: defect | Status: infoneeded_new
Priority: trivial | Milestone: unknown
Component: MythTV - General | Version: 0.22
Severity: low | Mlocked: 0
------------------------------+---------------------------------------------

Comment(by kl@…):

Attached "Hej Haj" - first 10M.

This is also the video which the player can't play sound from - mplayer(on
same client where mythfrontend won't play sound) plays sound just fine and
says this about sound:
Opening audio decoder: [faad] AAC (MPEG2/4 Advanced Audio Coding)
FAAD: compressed input bitrate missing, assuming 128kbit/s!
AUDIO: 48000 Hz, 2 ch, s16le, 128.0 kbit/8.33% (ratio: 16000->192000)
Selected audio codec: [faad] afm: faad (FAAD AAC (MPEG-2/MPEG-4 Audio))

The package on the frontend is from debian-multimedia - experimental
branch (also v0.22 with fixes)

hmm. can't see the attach file option.. I'll try to figure out why.

--
Ticket URL: <http://svn.mythtv.org/trac/ticket/7630#comment:3>
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mythtv at cvs

Nov 21, 2009, 10:45 PM

Post #5 of 11 (1002 views)
Permalink
Re: Ticket #7630: backend crashes when making h264 previews [In reply to]
#7630: backend crashes when making h264 previews
------------------------------+---------------------------------------------
Reporter: kl@… | Owner: ijr
Type: defect | Status: infoneeded_new
Priority: trivial | Milestone: unknown
Component: MythTV - General | Version: 0.22
Severity: low | Mlocked: 0
------------------------------+---------------------------------------------

Comment(by Klavs Klavsen <kl@…>):

trac only allows attaching files of 500K or less - so this sample may not
be enough.
I can put a larger sample on my own server for download if you like.

I just found how to make a backtrace, and will do so if need be.

I may very well be wrong with how or why myth-backend stopped recording.

I've put the full backend log file for the periode here:
http://vsen.dk/files/mythbackend.log

I hope you can help me identify a pattern from the logfile and the below
details of what recordings went fine, and which stopped.

These recordings was stopped at some point:
2009-11-20 23:00:03.379 Started recording: Stigmata "Amerikansk thriller
fra 1999.Da den helt almindelige unge pige Frankie viser foruroligende
tegn på stigmata, Jesu sår, sender Va": channel 1003 on cardid 2, sourceid
1

2009-11-20 23:28:51.303 Started recording: The Manchurian Candidate:
channel 1002 on cardid 7, sourceid 1
2009-11-21 07:30:03.782 Started recording: Hurlum Haj "(Shark Bait - the
reef) Amerikansk tegnefilm fra 2006.Den lille fisk Per kommer ud på sit
livs rejse, da hans forældre bliver fa": channel 1004 on cardid 1,
sourceid 1

Stopped 18 minutes and 40 seconds in.

2009-11-21 10:40:04.408 Started recording: Troldspejlet: channel 1001 on
cardid 1, sourceid 1
Stopped approx. 2 minutes in.

Unfortunately I deleted the rest - so I can't say exactly how long it
recorded. I'll keep recording and when it happens again I'll gladly
provide whatever info you mean can help with identifying the problem.

These recordings where fine:
2009-11-20 22:15:03.154 Started recording: Just Like Heaven "Amerikansk
romantisk komedie fra 2005.Arkitekten David bliver temmelig overrasket, da
han opdager, at hans nye lejlighed allered": channel 1006 on cardid 1,
sourceid 1
2009-11-21 07:27:55.963 Started recording: Hello Kitty: channel 1002 on
cardid 2, sourceid 1

Thank you for your time and a GREAT piece of software

--
Ticket URL: <http://svn.mythtv.org/trac/ticket/7630#comment:4>
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mythtv at cvs

Nov 21, 2009, 10:50 PM

Post #6 of 11 (1000 views)
Permalink
Re: Ticket #7630: backend crashes when making h264 previews [In reply to]
#7630: backend crashes when making h264 previews
------------------------------+---------------------------------------------
Reporter: kl@… | Owner: ijr
Type: defect | Status: infoneeded_new
Priority: trivial | Milestone: unknown
Component: MythTV - General | Version: 0.22
Severity: low | Mlocked: 0
------------------------------+---------------------------------------------

Comment(by Klavs Klavsen <kl@…>):

btw. Troldspejlet died 2 and ~20 seconds minutes after start and there's
no entries around that time in the logfile - and no one asking for
previews - so that one was not caused by that.

I'll record it next time as well - and if it stops again - I'll run
mythbackend with gdb when it records again.

Is this an ok approach?

--
Ticket URL: <http://svn.mythtv.org/trac/ticket/7630#comment:5>
MythTV <http://www.mythtv.org/>
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mythtv at cvs

Nov 24, 2009, 11:30 AM

Post #7 of 11 (956 views)
Permalink
Re: Ticket #7630: backend crashes when making h264 previews [In reply to]
#7630: backend crashes when making h264 previews
------------------------------+---------------------------------------------
Reporter: kl@… | Owner: ijr
Type: defect | Status: infoneeded_new
Priority: trivial | Milestone: unknown
Component: MythTV - General | Version: 0.22
Severity: low | Mlocked: 0
------------------------------+---------------------------------------------

Comment(by Klavs Klavsen <kl@…>):

It happened again :(

I was recording two shows from tv2 and dr simultanious - and the load was
0.8, and the wa (in vmstat output) was ~17 (with system having one 1200mhz
cpu that doesn't seem bad.

--
Ticket URL: <http://svn.mythtv.org/trac/ticket/7630#comment:6>
MythTV <http://www.mythtv.org/>
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mythtv at cvs

Nov 24, 2009, 11:33 AM

Post #8 of 11 (961 views)
Permalink
Re: Ticket #7630: backend crashes when making h264 previews [In reply to]
#7630: backend crashes when making h264 previews
------------------------------+---------------------------------------------
Reporter: kl@… | Owner: ijr
Type: defect | Status: infoneeded_new
Priority: trivial | Milestone: unknown
Component: MythTV - General | Version: 0.22
Severity: low | Mlocked: 0
------------------------------+---------------------------------------------

Comment(by Klavs Klavsen <kl@…>):

I can't change the status away from infoneeded_new - even though I think
it should be changed :(

If you're missing anything, pls. advise.

I'll gladly modify source (or switch to another branch - or just compile a
newer version of 0.22+fixes branch - with debug options enabled (if any
exist) - to help with hunting this down.

DR and TV2 is standard mpeg2 channels - so there should be nothing special
about those.

--
Ticket URL: <http://svn.mythtv.org/trac/ticket/7630#comment:7>
MythTV <http://www.mythtv.org/>
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mythtv at cvs

Nov 24, 2009, 2:02 PM

Post #9 of 11 (946 views)
Permalink
Re: Ticket #7630: backend crashes when making h264 previews [In reply to]
#7630: backend crashes when making h264 previews
------------------------------+---------------------------------------------
Reporter: kl@… | Owner: ijr
Type: defect | Status: infoneeded_new
Priority: trivial | Milestone: unknown
Component: MythTV - General | Version: 0.22
Severity: low | Mlocked: 0
------------------------------+---------------------------------------------

Comment(by Dibblah):

We still need a backtrace.

You also need to make sure that you're not running out of RAM + swap -
dmesg will tell you this.

--
Ticket URL: <http://svn.mythtv.org/trac/ticket/7630#comment:8>
MythTV <http://www.mythtv.org/>
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mythtv at cvs

Nov 27, 2009, 12:08 AM

Post #10 of 11 (890 views)
Permalink
Re: Ticket #7630: backend crashes when making h264 previews [In reply to]
#7630: backend crashes when making h264 previews
------------------------------+---------------------------------------------
Reporter: kl@… | Owner: ijr
Type: defect | Status: infoneeded_new
Priority: trivial | Milestone: unknown
Component: MythTV - General | Version: 0.22
Severity: low | Mlocked: 0
------------------------------+---------------------------------------------

Comment(by Klavs Klavsen <kl@…>):

I havne't been able to reproduce the crashing, while generating previews
of shows from an mpeg4 channel - so it's most likely that it was just a
bad guess on my part.

I have made mythbackend crash (ie. run and not record or be contactable) -
but I have another bug report for that problem #7647 - so pls. mark this
invalid.

p.s. I tried to make a backtrace when it crashed.. but apperantly gdb
doesn't like me or something. Pressing ctrl+c finished gdb - instead of
only disconnecting it from mythbackend :(

I'll try again :)

--
Ticket URL: <http://svn.mythtv.org/trac/ticket/7630#comment:9>
MythTV <http://www.mythtv.org/>
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mythtv at cvs

Nov 27, 2009, 1:23 AM

Post #11 of 11 (895 views)
Permalink
Re: Ticket #7630: backend crashes when making h264 previews [In reply to]
#7630: backend crashes when making h264 previews
------------------------------+---------------------------------------------
Reporter: kl@… | Owner: ijr
Type: defect | Status: closed
Priority: trivial | Milestone: unknown
Component: MythTV - General | Version: 0.22
Severity: low | Resolution: invalid
Mlocked: 0 |
------------------------------+---------------------------------------------
Changes (by stuartm):

* status: infoneeded_new => closed
* resolution: => invalid


--
Ticket URL: <http://svn.mythtv.org/trac/ticket/7630#comment:10>
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