[mythtv-commits] Ticket #7873: Playback of HDTV streams jerky

[MythTV]

#7873: Playback of HDTV streams jerky
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 Reporter:  holger.hoehnemann@…           |       Owner:  janne  
     Type:  defect                        |      Status:  new    
 Priority:  blocker                       |   Milestone:  unknown
Component:  MythTV - Video Playback       |     Version:  head   
 Severity:  high                          |     Mlocked:  0      
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 For HDTV channels the player is jerking. In detail there is the effect
 that every 0,8 second one or more older frames are viewed. For a steady
 motion the objects are jumping into the past. The effect is visible on
 both computers in the same way. (one dual core AMD 3.2G+ + Nvidia VDPAU
 support, typical processor load around 20%, the other AMD Opteron + AMD
 graphic with standard XVMC driver, typical procesor load at 30%)

 2a) For the Playback of the recorded streams the same effect appears using
 mythtv. Using mplayer with VDPAU-support the playback is smooth but
 becomes asyncronous with audio. On the Opteron board the playback is
 smooth too using VLC player.

 2b) For standard playback (non-HD) often the actual frame seems to be
 switched during showing. On moving objects a horizontal cutline can be
 observed showing the object during two different stages of the move. this
 line appears at approx. one third of the screen from top side. Effect is
 visible on both hardware.

 Both computers are using onboard graphics chips sharing 512MB graphics
 memory. Video is displayed at 1920*1080 pixels using HDMI output on both
 machines.

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Ticket URL: <http://svn.mythtv.org/trac/ticket/7873>
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