[mythtv-users] FrameSync Area on Perfectly good system

Paulin paulin at spextreme.com
Tue Mar 24 00:03:04 UTC 2009


Hello all,
I've had a myth system setup for a while now.  I'm using Trunk 19992.  It's
been running very well and in fact over this weekend was the first time I
had to reboot it in 14 days.

Anyway tonight my wife went to start watching something and it was
responding very slowly.  So I logged in and checked it out.

On the frontend she was in the screen to select a show to watch.  Top
command showed the backend pegging the CPU at 100%.  Frontend wouldn't
respond.  I looked in the frontend log file and saw it spitting out the
Frame Sync Error as below

2009-03-23 19:42:59.801 [ac3 @ 0xb7040770]frame sync error



This continued.  The log right before the frame sync is

2009-03-23 19:42:59.592 AFD: Opened codec 0x9fc6ba0, id(MPEG2VIDEO)
type(Video)
2009-03-23 19:42:59.592 AFD: codec AC3 has 6 channels
2009-03-23 19:42:59.593 AFD: Opened codec 0x9fc7290, id(AC3) type(Audio)
2009-03-23 19:42:59.698 [mpeg2video @ 0xb7040770]skipped MB in I frame at 22
0
2009-03-23 19:42:59.698 [mpeg2video @ 0xb7040770]skipped MB in I frame at 5
6
2009-03-23 19:42:59.698 [mpeg2video @ 0xb7040770]skipped MB in I frame at 27
13
2009-03-23 19:42:59.698 [mpeg2video @ 0xb7040770]invalid mb type in I Frame
at 22 15
2009-03-23 19:42:59.698 [mpeg2video @ 0xb7040770]skipped MB in I frame at 42
16
2009-03-23 19:42:59.698 [mpeg2video @ 0xb7040770]skipped MB in I frame at 3
23
2009-03-23 19:42:59.699 [mpeg2video @ 0xb7040770]skipped MB in I frame at 16
30
2009-03-23 19:42:59.699 [mpeg2video @ 0xb7040770]skipped MB in I frame at 4
39
2009-03-23 19:42:59.699 [mpeg2video @ 0xb7040770]invalid mb type in I Frame
at 40 39
2009-03-23 19:42:59.699 [mpeg2video @ 0xb7040770]skipped MB in I frame at 5
40
2009-03-23 19:42:59.699 [mpeg2video @ 0xb7040770]skipped MB in I frame at 41
40
2009-03-23 19:42:59.699 [mpeg2video @ 0xb7040770]skipped MB in I frame at 1
41
2009-03-23 19:42:59.699 [mpeg2video @ 0xb7040770]ac-tex damaged at 42 41
2009-03-23 19:42:59.699 [mpeg2video @ 0xb7040770]invalid mb type in I Frame
at 2 42
2009-03-23 19:42:59.699 [mpeg2video @ 0xb7040770]invalid mb type in I Frame
at 40 42
2009-03-23 19:42:59.699 [mpeg2video @ 0xb7040770]invalid mb type in I Frame
at 40 43
2009-03-23 19:42:59.699 [mpeg2video @ 0xb7040770]skipped MB in I frame at 1
44
2009-03-23 19:42:59.699 [mpeg2video @ 0xb7040770]skipped MB in I frame at 41
44
2009-03-23 19:42:59.699 [mpeg2video @ 0xb7040770]Warning MVs not available
2009-03-23 19:42:59.793 [mpeg2video @ 0xb7040770]ac-tex damaged at 4 8
2009-03-23 19:42:59.793 [mpeg2video @ 0xb7040770]slice mismatch
2009-03-23 19:42:59.796 [mpeg2video @ 0xb7040770]Warning MVs not available
2009-03-23 19:42:59.801 [ac3 @ 0xb7040770]frame sync error


Any ideas what happened.  Like I said its been working fine for over a
month.  No updates or anything were done other then a reboot 3 days ago.
 Could this be a corrupted video file or bad hard disk?  Machine is only 6
months old.

Thoughts.  How can I fix this or where should I look?

Thanks
steve
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