[mythtv-users] HD Is Choppy. More RAM?

[Eric Broszeit]

Well, Doom 3 runs fine on Windows. I should have mentioned that. Tell me of
these binary drivers you speak of.

I suppose a sample file at that res would be a good thing to try as well.
That way I would know if it is the playback or something else.

I will check the top when I get home.

On 2/13/07, Jarod Wilson <lists at wilsonet.com> wrote:
>
> Ackster wrote:
> > I use a 6600GT w/ a Athlon64 3400+ and I get occasional chop @ 1920x1080
> > with Nvidia crappy driver, so you certainly will.  It traced it back to
> > the sync settings of the driver.  Watch your 'top' when you get choppy
> > playback, you should see it spiking to 100% and back down to mid point
> > and back up again when the chop occurs again.   If it does, fire up
> > nvidia-settings applet and toggle off a v-sync or something (I forget
> > honestly) and test your CPU load again. One of those settings makes a
> > dramatic difference on the load.  Search this forum, I posted about the
> > setting before.
>
> Wait, are you still getting chop w/those hardware specs? If so,
> something is screwy in your setup. I've got an Athlon 64 3500+ w/a
> GeForce 6200TC card, and cpu usage never goes over 35% playing back
> 1080i content, never over 30% for 720p, and definitely no chop.
>
>
> > As for Doom 3 being ok, it uses shaders to speed up
> > video output, but your HDTV playback won't as there's no geometry to
> > work with (it's straight video, not mathematical modeling), so that's
> > not a fair comparison.
>
> Definitely not a relevant comparison.
>
>
> > Eric Broszeit wrote:
> >> I have a 3.8Ghz Celeron D. My video card is a GeForce 5700 128MB. It
> >> is enough for Doom 3. Seeing as how I am going through firewire, I
> >> figured that the video card would be less relevant.
>
> The video card is EXTREMELY relevant. The firewire side of things does
> nothing more than dump an mpeg2 file to disk. It has approximately zero
> relevance to your system's ability to play back said file. However, you
> certainly should have an ample amount of cpu power and a capable enough
> video card. My first guess would be that you're not using the binary
> nvidia drivers, but that seems unlikely since you say doom 3 runs fine...
>
> --
> Jarod Wilson
> jarod at wilsonet.com
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>



-- 
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Eric B
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