[mythtv-users] Video studder XvMC w/OSD

[Kevin Kuphal]

On Mon, Mar 31, 2008 at 4:10 PM, Richard Shaw <hobbes1069 at gmail.com> wrote:

> On Mon, Mar 31, 2008 at 1:46 PM, Calvin Harrigan
> <charrig_mythtv at bellsouth.net> wrote:
> [snip]
> >  > Seems like there are lots of performance problems with HD on 0.21
> >  > Hmmm... Maybe I should postpone building that dedicated Myth system
> >  > until this issue gets solved.
> >  >
> >
> >  I cannot cosign on that.  I run HD on an XP 1800+ processor frontend
> >  using XVMC that scales HD down to SD.  It's able to stream the data
> over
> >  the network and play it fine.  There is a slight hiccup when the stream
> >  first starts but that last for like 2 seconds and then it's fine after
> >  that.  Best part is that I only have to use XVMC for HD content, 0.21
> >  allow me to set it to automatically switch decoders depending on source
> >  resolution.
>
> The biggest factor I've discovered (both on the list and from personal
> experience) is display resolution. As I've said on a previous post, my
> system is a Sempron 64 (running F8/x86_64) 3000+ (1.8GHz) and it is
> barely able to play HD content at 720x480. I have problems using the
> EPG 720p (slow to respond to remote) and I can only use up to the
> Linear deinterlacer for 1080i content.
>
> In contrast, my desktop Althlon 3000+ using Mplayer can not playback
> 720p content at full resolution.


That may be. I also am driving my screen at 1024x768 using a VGA to NTSC
converter playing HD scaled down to that resolution.  I feel I'm at the very
edge of what I can do on this processor as not using XvMC studders.  I have
a feeling that if I ever go to an HDTV, I'm going to factor in an upgrade to
a CPU that can simply just chew through HD.

Kevin
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