[mythtv-commits] Ticket #868: [8350] breaks mpeg2 decoding during frame advance

[MythTV]

#868: [8350] breaks mpeg2 decoding during frame advance
--------------------------------+-------------------------------------------
 Reporter:  bjm <bjm at lvcm.com>  |       Owner:  danielk
     Type:  defect              |      Status:  new    
 Priority:  minor               |   Milestone:  0.19   
Component:  mythtv              |     Version:  head   
 Severity:  medium              |  
--------------------------------+-------------------------------------------
 To reproduce:

 - Install SVN [8350] or later

 - Record a file, or view a live buffer, with an ivtv hardward encoder
 card.

 - Begin playback and find a scene with some continous motion.

 - Press Pause.

 - Press ">" to advance one frame at a time.

 The first advance appears to jump back several frames. Keypresses after
 that
 apply fragments of images and decode errors to the initial image. The
 frontend prints messages like this:
 {{{
 [mpeg2video @ 0xb75c0270]Warning MVs not available
 [mpeg2video @ 0xb75c0270]00 motion_type at 13 11
 [mpeg2video @ 0xb75c0270]00 motion_type at 28 12
 [mpeg2video @ 0xb75c0270]00 motion_type at 10 13
 [mpeg2video @ 0xb75c0270]00 motion_type at 4 15
 [mpeg2video @ 0xb75c0270]00 motion_type at 10 15
 [mpeg2video @ 0xb75c0270]00 motion_type at 2 16
 [mpeg2video @ 0xb75c0270]00 motion_type at 7 17
 [mpeg2video @ 0xb75c0270]mb incr damaged
 [mpeg2video @ 0xb75c0270]00 motion_type at 23 19
 }}}

 Mpeg4 software encoded files advance one frame at a time properly as do
 mpeg2 files played back with mythfrontend version [8349] or earlier.

-- 
Ticket URL: <http://cvs.mythtv.org/trac/ticket/868>
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