[mythtv] XvMC VLD Decoding stuttering problems on some videos

Kristian Kalweit kalweit at exorpro.de
Wed Oct 11 08:54:24 UTC 2006


Terry Barnaby schrieb:
>
> I think it would be worth making the decoder thread a higher priority 
> than base system processes as well however, especially using XvMC as 
> there are limited output buffers to use and so little leeway in time 
> available. If some other system processes get started it is not easy for 
> the decoder thread to keep up with the real-time display thread. (Note 
> my simple nice(-10) patch will also set the RingBuffer::ReadAheadThread 
> and AudioOutputBase::OutputAudioLoop's to -10 when watching liveTv. 
> Maybe these should be left alone, if so this would need improving).
>
>   

Where do make the nice(-10) for the AudioOutput? If I only make the 
nice(-10) for the decoder (see your posted patch) I get heavy sound lags 
at prebuffering pauses.

Kristian.


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