[mythtv-users] Xvmc and nVidia cards

[Tom Lichti]

nospam312 wrote:
>> I did this and it my CPU utilization went down to about 40% on HD
>> streams.  The video actually looks really great in high action.
>> Unfortunately, the sound has a break / hick-up / studder every 1.5 to
>> 2 seconds.  (When you're watching American Idol, this can be a bit
>> annoying.)  The studder only occurs while XvMC is on.  If I turn XvMC
>> off, the sound problem goes away but my CPU goes back up and action
>> has some problems.
>>     
>
> I get a similar problem on certain channels but not on the majority.
> For me it is stuttering audio virtually all of the time.  If I swap to
> the audio description audio track video is fine again but obviously
> the normal sound is not there.
>
> As soon as I switch back to the Standard option instead of XvMC
> everything goes back to normal.  I suspect it is either the fact there
> are multiple audio tracks, high bitrate or some wierd audio/video
> encoding that is affecting XvMC or a combination of them all.
>   
I find that SD content with XvMC stutters, but HD content with XvMC is 
perfect. So I enabled the database option to use XvMC on HD
content only, and it works great, playing SD without XvMC, and HD with XvMC.

Tom