[mythtv-users] How to minimize CPU usage

Jerry Rubinow jerrymr at gmail.com
Mon Jan 30 19:47:25 UTC 2006


On 1/30/06, Boleslaw Ciesielski <bolek-mythtv at curl.com> wrote:
> Jerry Rubinow wrote:
> > PVRs have existed for a while, but not HD-resolution PVRs - they're
> > pretty recent.  If X is in a 24-bit depth mode, then I don't see where
> > my numbers are off - 24 (bit depth) * 1280 * 720 (screen res) * 30
> > (fps) = 630+ Mbits/sec.
>
> 720p is (usually) 60fps.
>
> Bolek

That's what I thought, but that would mean 24 * 1280 * 720 * 60 = 1260
Mbits/second going to the video card.  There'd be no way that would
work over PCI - it'd be dropping every other frame (not to mention
that X reports 32 bpp, so 24 seems low), but it seemd like there was
much less dropage than that.  So there's something I'm not accounting
for, but I don't know what (this is without XvMC).

-Jerry


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