[mythtv-commits] Ticket #5749: Internal player stutters on 720p content

[MythTV]

#5749: Internal player stutters on 720p content
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 Reporter:  zgeggy2k at yahoo.com  |        Owner:  janne     
     Type:  defect              |       Status:  assigned  
 Priority:  major               |    Milestone:  unknown   
Component:  Video Playback      |      Version:  0.21-fixes
 Severity:  medium              |   Resolution:            
  Mlocked:  0                   |  
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Changes (by janne):

  * owner:  ijr => janne
  * status:  new => assigned


Comment:

 The patch just increases the buffer size. it's very unlikely that it fixes
 a problem itself.

 I can't reproduce the stuttering with unpatched trunk. both good.mpg and
 bad.mpg play perfectly fine here.

 So I suspect that your processor is not fast enough to handle spikes of
 cpu usage during decoding. More buffered frames give obviously more time
 to catch up and fixes the problem.

 Increasing the buffer size for everyone is obviously not the right
 solution. Since this seems to be a common problem with 720p (60 real
 frames per second) video it might make sense to make buffer time constant
 and not frame constant.

 Does the increasing the number of video buffers alone fixes the problem,
 i.e. only applying the libs/libmythtv/videoout_xv.cpp hunk?

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Ticket URL: <http://svn.mythtv.org/trac/ticket/5749#comment:9>
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