[mythtv-commits] Ticket #2512: Live tv studders little bit

MythTV mythtv at cvs.mythtv.org
Sun Oct 1 23:05:26 UTC 2006

#2512: Live tv studders little bit
 Reporter:  chris at christophm.de  |       Owner:  ijr    
     Type:  defect               |      Status:  new    
 Priority:  minor                |   Milestone:  unknown
Component:  mythtv               |     Version:  0.20   
 Severity:  medium               |  
 After the update from 0.19 to 0.20 live tv startet to studder a little
 bit. You see it good, while watching a news channel with this scrolling
 texts. I changed nothing else, only updated mythtv to 0.20 rev 11281. The
 mythtv playback settings, the nvidia driver settings are all the same. The
 studder can be stopped, if live tv is paused for a few seconds.

 In my frontend.log, there are the following messages again and again, that
 could have something to do with that studder:

  * NVP: Waiting for prebuffer.. 0 AAAAAAAAAAaAALAAAuAAAAAAAAAAAAA[[BR]]
  * WriteAudio: buffer underrun[[BR]]
  * AO: dropping back audio_buffer_unused[[BR]]

 I attach the complete frontend.log.

 Some system info:

  * Mythtv: 0.20 rev 11281. Playback settings: OpenGL Sync=on, Deint: Bob,
 UseVideoAsTimebase=on, big audio buffer=on, decoder=Default[[BR]]
  * OS: Gentoo Linux (the whole system 64bit compiled)[[BR]]
  * Processor: AMD Athlon 64 3500[[BR]]
  * Ram: 1GB Kingston HyperX[[BR]]
  * Video source: 2x DVB-S (Hauppauge Nova-S plus)[[BR]]
  * Graphic card: Nvidia GF 6600. Driver version: 1.0.8762-r1, Special
 driver settings: SyncToVBlank=on, XVideoTextureSyncToVBlank=off,

Ticket URL: <http://svn.mythtv.org/trac/ticket/2512>
MythTV <http://www.mythtv.org/>

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