[mythtv-users] Prebuffering pause with HD

Jeff Piazza jeff at jeffpiazza.org
Thu Dec 21 15:25:42 UTC 2006


>  One quick follow up to my previous post:
>
> I went to an nforce4 SLI motherboard, and a PCI-e Video card from an 
> AGP one.
>
> On 12/15/06, john sturgeon <john.sturgeon+mythtv[at]gmail.com> wrote:
> > We recently had a power outage and I lost the motherboard in my
> > frontend. Since it was getting a bit old, I decided to get a new
> > frontend box. I replaced my video card with a GeForce 7600GT. The
> > problem is that I'm now getting (again) the dreaded 'NVP: 
> Prebuffering
> > Pause' error playing back HD content.
> >
> > Here is my setup in a nutshell:
> >
> > CPU: AMD 4200+ Duo
> > Video Card: GeForce 7600GT
> > RAM: 3Gig
> > MythTV 0.20 (mythtv-frontend-0.20-148.fc5.at)
> >
> > My backend is on a separate machine and the video partition is NFS
> > mounted to my frontend so the file's are opened via NFS for playback.
> >
> > I *really* thought that when I went to the AMD 4200 that my playback
> > issues would be gone. Certainly that is enough CPU horsepower, the
> > real problem now is how do I troubleshoot what's going on?
> >
> > Any help would be greatly appreciated.
> >
> > --
> > John Sturgeon <><
> >
>
I, too, just switched from an AGP-based card (ASUS A8V Deluxe) to an 
nforce4 PCI-e motherboard (MSI K8N Neo4) and graphics card (BioStar 
GeForce 6600LE), and am now experiencing this problem (prebuffering 
pauses, 98% CPU usage), where previously HD playback was fine.  (This 
is for a combined front end/back end machine with SATA raid-0.)

Interestingly, mplayer can play the same HD mpg file with only 40-60% 
CPU, using the default video codec.  Lots of audio stutter with this, 
but much less than mythfrontend.

/JEP



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