Tearing in PureVideo playback

[Mahoney]

Hi all,

I'm using VMR9, 3D acceleration on a GeForce 6150 motherboard with the latest nVidia drivers and PureVideo decoders. Deinterlacing set to "Smart" and "Pixel Adaptive".

I'm seeing tearing in playback, particularly in rapid motion. This is both in sport (so video) and DVD (film). The sport might be explicable due to it struggling to keep up; with FSE I get 50 FPS (PAL) most of the time but it does occasionally flicker down to 49 according to FRAPS. But I'm more confused about the DVDs; they are a solid 25, as you'd expect.

I tried turning on vsynch and triple buffering, but still get the tearing when a scene pans rapidly. The only thing I can think of is that I haven;t got 3:2 pulldown turned on; would that result in tearing? It looks like I'm getting half (or 1/3 or 1/4, at different times) of one frame and the rest of the next.

Anyone got any thoughts? I'm contemplating just getting a decent graphics card so that power ceases to be a factor, but I'd like to be confident that would actually solve the problem!

[autoboy]

What resolution? My 6150 would not handle 1080p for my Sony monitor so I upgraded to a 7300GS. You might try turning off pixel adaptive. Are you running your ram in dual channel?

[Mahoney]

I'm kicking out 1920x1080@50 resolution. I guess it could be as simple as that. Not sure about the RAM.

I'm wondering whether to get a cheap 8600 card to future proof for HD.

[bcjenkins]

Before upgrading the client, think about your use of the client machine.

Is it solely dedicated to SageTV? If so the HD extender may be a better upgrade path.

B

[Lucas]

I was having a similar issue with 7600GS card. I was getting something that looked like tearing on fast pans horizontally across the top of the picture. This was for all video SD and HD.

After switching Inverse Telecine off it reduced it quite a bit. I have since increased the clock of the 2D and 3D chips from 400 to 450MHz and I have yet to see the artifact.

[Mahoney]

The HD extender would not appear to have any facility to add a Blu Ray or HD-DVD player (in fact the only one that anyone's seen doesn't have a DVD player). You can't play games on it, either. I'm still seriously considering it, but at the moment I'm still on the client PC side.