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

[Ackster]

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.  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.

-Ack

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.
>
> On 2/13/07, *Mark Chang* <mark.chang at gmail.com 
> <mailto:mark.chang at gmail.com>> wrote:
>
>     On 2/13/07, Eric Broszeit <eric.broszeit at gmail.com
>     <mailto:eric.broszeit at gmail.com>> wrote:
>     > I have Gnome, the back end, and the front end all on one box with a
>     > processor that will be more than enough, but the RAM is only
>     512. Might this
>     > be the problem? I am capturing via firewire 400mbps. That should
>     be plenty
>     > fast enough. I am getting about 1 second of video and audio then
>     it freezes
>     > for 2 seconds, 1 good second, freezes, etc.
>
>     FE/BE here with 512 and it is enough. There is something else wrong.
>
>     --
>     Mark L. Chang
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