[PD] Win 2000 pix_video
heisters at 0x09.com
Wed Mar 30 07:06:32 CEST 2005
Thanks for the response.
I've upgraded every driver under the sun and DirectX. It's good to hear
you recommend that because I was considering downgrading it. Upgrading
the Radeon driver helped a touch.
Unfortunately, the Matrox's new drivers only run on Windows XP; it looks
like Matrox /withdrew/ support for Win 2k or something!?!
I also wasn't aware that it was possible to reduce the capture
resolution before it got to Pd, I'll look into that.
For the time being I'm going to try to use a G4 laptop. What you say
about the optimization is interesting. I was amazed at how easily the
video software Isadora plays with full res DV, despite its rather heavy
GUI. Isadora's author basically said he did Altivec optimizations, but I
didn't think that that would account for the impressive performance. A
Mac pecularity would help to explain it. Does anyone have info on this?
Thoralf Schulze wrote:
> Hi Ian,
> I've been working with pix_video on Win2k, and it
> worked quite well in general. However, I found that
> capturing from a DV source in full resolution
> (720x576) didn't leave a lot of CPU cycles for other
> purposes on my box (P4, 2.6gig) - lowering the
> capturing resolution might help in your case, too. If
> you don't have an adequate utility for your matrox
> capture card, you might want to try amcap.exe or
> graphedit to change the settings of the WDM video
> capture filter.
> It seems like the mac code for grabbing pixes is a lot
> more optimized: someone stated recently that handling
> hd video (1080i) posed no problem on recent macs ...
> Another hint would be upgrading DirectX and/or the
> capture drivers on that machine. I couldn't manage to
> get GEM to render any textures with the version of
> directx that shipped with win2k on my laptop.
> Hope this helps (although I'm merely stating the
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