Nvidia video capture software?

I'm just curios what software do you guys use to capture from an nvidia cards video in? In the past I have used amcap and it used to work great but now for some reason I can't get it to capture anything. I can view the video in on the screen using either amcap or virtualdub but niether of the two aps seem to actually be able to capture the video stream for me and i've no clue why. So if anyone happens to have video capture software that works with the video in on a Geforce 4 please let me know because I would really like to find some.

 

Check your WDM devices in device manager and make sure that none of them have errors.The attached image is from windows xp device manager. As far as programs I use cyberlinks Power Producer for video capture.Also check the front page of MG as there are alot of programs there and it helps support the site