[mythtv-users] HD on SDTV playback question

Christian Burger christian.burger at abtg.net
Tue Mar 6 20:44:02 UTC 2007

> -----Original Message-----
> From: Brian Wood [mailto:beww at beww.org]
> Sent: Tuesday, March 06, 2007 2:35 PM
> To: christian.burger at abtg.net; Discussion about mythtv
> Subject: Re: [mythtv-users] HD on SDTV playback question
> On Mar 6, 2007, at 1:25 PM, Christian Burger wrote:
> >
> > You would think that, but on my AMD 64 4200+ X2 939 w/ 2 gigs of
> > memory if I
> > don't use XVMC on my Nvidia 5200 it's unwatchable.  It doesn't
> > utilize all
> > the CPU but you can tell it's dropping frames.  With XVMC it's
> > beautiful and
> > perfect ~ 20% cpu utilization.
> Wow, something is seriously wrong. Just one of those cores should
> handle the job with ease.
> Are you running any other CPU-hungry apps? If not perhaps your video
> driver setup isn't optimum, assuming that's an AGP video card.
> Are you sure you're clocking the CPU where it should be? Frequency
> scaling might be set up wrong, or the mobo settings?
> I'd try and figure out what's going on because even if it's working
> OK for you something isn't right and it may bite you when you least
> expect it.

Top reports nothing else utilizing any significant amount of cpu, even xine
or mythtv doesn't utilize 100% but still drops frames.  I have performance
governor set which keeps me 2.2Ghz all the time.  It's a FE/BE box, but BE
uses perhaps a max of 7-8% if recording off of multiple tuners.  The box
performs as it should except when it comes to HD.  I thought maybe the 5200
wasn't up to par but I see a lot of people using them successfully so I
figured it must be something on my end.  

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