[mythtv] 'WriteAudio: buffer underrun' during playback caused bythe scheduler
tom at redpepperracing.com
Thu Sep 14 14:59:24 UTC 2006
William Prochazka wrote:
> So I am reading this thread I found through Google that sounds just
> like my issue, come to find out it is an active thread and I just had
> not check the Dev grou pin a few days ;). Ok, so I have a P4 3.0HT w/
> 1GB of ram and an NVidia FX5200. I( am trying to output the HD using
> DVI and the audio passthrough to my receiver. Like Jan, I am getting
> no great results. I have tried using XvMC, but I see a 87-90% CPU
> usage yet the audio and video are very skippy. The receiver detects
> the audio as 3/2 which is fine. As far as skipping, though, I hear .5
> sec of audio and the .5 of silence and the video is skipping in-time.
> Without XvMC, I am getting 99% CPU utilization but only occasional
> skipping (ie, when there is lots of motion). Of course if I dare to
> add in any type of deintelace it gets worse. I have tried disabling
> HT thinking it might be a CPU task switching issue (plus HT doesn't
> really DO that much), real-time priority, and any other tweak I can
> think of.
If you have 'OpenGL Vsync' enabled in the playback settings, try
disabling it and see what happens.
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