[mythtv-commits] Ticket #2252: mythtranscode --honorcutlist --mpeg2 creates av sync problems

[MythTV]

#2252: mythtranscode --honorcutlist --mpeg2 creates av sync problems
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 Reporter:  drescherjm at gmail.com  |        Owner:  paulh
     Type:  defect                |       Status:  new  
 Priority:  minor                 |    Milestone:  0.20 
Component:  mythtv                |      Version:  head 
 Severity:  medium                |   Resolution:       
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Changes (by paulh):

  * owner:  ijr => paulh
  * version:  => head
  * milestone:  => 0.20

Comment:

 John, I never got a reply from Geoff so I thought I'd take a look myself.
 I decided the easiest way to fix it was to change mythreplex to detect the
 audio inconsistencies and add or delete audio frames to the demuxed output
 as required.

 Could you try the patch attached to this ticket. It's still a work in
 progress but fixes the sync on the two test files I've been using to debug
 this one from a DVB-t recording and the other from  a PVR250. Currently it
 wont fix negative PTS inconsistencies or work with recordings with AC3
 audio tracks.

 The fix is a bit of a hack at the moment, it just inserts copies of the
 current audio frame which does give a slight audio glitch where the cut
 points are. If I get some positive feedback I'll look at how to encode a
 blank audio frame and insert that which should be less noticeable.

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Ticket URL: <http://cvs.mythtv.org/trac/ticket/2252#comment:1>
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