[mythtv-users] Graphics card recomendation

[Dylan Semler]

On 8/24/06, Michael T. Dean <mtdean at thirdcontact.com> wrote:
>
> On 08/24/2006 12:11 PM, Dylan Semler wrote:
>
> > According to the Nvidia driver's readme, the GeForce4 Ti models' XvMC
> > don't support "IDCT," only "motion-compensation."  While I'm not sure
> > what either of those terms mean, I believe that mine is a Ti model and
> > am hoping that IDCT is an integral part of processing HD streams.  So
> > I'm eyeing a 256MB 5200 for under $50.
>
>
> Both Motion Compensation (MC) and inverse Discrete Cosine Transform
> (iDCT) must occur when decoding an MPEG-2 video stream.  So, if you're
> using XvMC and your card doesn't support iDCT, your CPU does it.


Hey that's great to hear!


So I realize that the cpu consumption results that I previously gave were a
bit biased, as mythtv was deinterlacing while mplayer was not.  So I just
tested it again with mythtv not deinterlacing.  At 1x, processor usage is
still peaked around 95%-99%, however if I slow it down to 0.5x, and only at
0.5x, it finally plays smoothly and cpu percentage is in the high 80s, low
90s.  Going up to 0.55x will produce a prebuffering pause once every maybe 7
- 10 seconds.

I just tried running myth with XvMC and cpu is about 94% - 97% at 1.0x I
can't do much testing because the computer usually hangs after a few seconds
and requires a hard reboot.

Anyways thanks for the help


Cheers,
Dylan
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