[mythtv-users] X2 5000 enough to play HD?

Phil Bridges gravityhammer at gmail.com
Wed Aug 27 17:30:54 UTC 2008


On Wed, Aug 27, 2008 at 1:24 PM, kanetse at gmail.com <kane.tse at gmail.com> wrote:
> I have recently built myself a new MythTV system, which will
> eventually become a master backend/frontend.  However, for now, I'm
> testing it in frontend only mode.  I seem to be unable to play HD on
> it without either stuttering or severe audio-sync issues.
>
> The system is a:
>
> AMD Athlon 64 X2 5000
> Gigabyte GA-MA78GM-S2H (AMD 780G)
> 2 GB RAM
> CentOS 5.2
>
> MythTV-0.21 (from ATrpms)
>
> I was originally running it with ATI's proprietary drivers (Catalyst
> 8.8); however, there were other issues with, which I attribute to the
> quality of the driver itself.  Recently, I popped in a nVidia GeForce
> 6600 (PCI-E), and set up XvMC.
>
> XvMC is, by all accounts, working properly (for example, I see a B&W
> OSD).  However, HD playback is very poor.  If closed captions are on,
> the audio stutters and movement is not smooth.  Skipping ahead or back
> (using the arrow keys) causes audio to get severely out of sync with
> the video.  All the while, CPU utilization is around 50% on one of the
> cores only; the other is nearly idle.  SD seems to play fine.
>
> Could it be an issue of streaming the HD streams over the network?
> Maybe the master backend can't supply data fast enough?
>
> There don't appear to be any error messages in the mythfrontend.log,
> except a lot of NVP: Prebuffering pause message.
>
> My config should be able to handle HDTV even without XvMC, right?
>

Sounds like you either aren't using the nvidia driver instead of the
nv, or you don't have "Use events=true" in your config.


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