[mythtv-commits] Ticket #4653: Allow Enable/Disable of deblocking loopfilter for h.264 ffmpeg (BBC HD support)

[MythTV]

#4653: Allow Enable/Disable of deblocking loopfilter for h.264 ffmpeg (BBC HD
support)
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 Reporter:  reidjr_at_lineone_net  |        Owner:  janne   
     Type:  enhancement            |       Status:  accepted
 Priority:  minor                  |    Milestone:  0.23    
Component:  mythtv                 |      Version:  head    
 Severity:  medium                 |   Resolution:          
  Mlocked:  0                      |  
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Comment(by janne):

 Replying to [comment:6 reidjr_at_lineone_net]:
 >
 > There is a strange thing I am seing though. Without the patch,
 multithreading h264
 > doesnt work, whatever you set max CPUs to. With the patch Setting the
 loopfilter
 > option to off, doesnt save any overall cpu load, but does allow
 multithreading to
 > work. Looks like either ffmpeg or underlying code has changed.

 The deblocking loop filter can prevent the slice paralell decoding. It's a
 known limitation of ffmpeg's slice level multithreaded decoding.

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Ticket URL: <http://svn.mythtv.org/trac/ticket/4653#comment:7>
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