[jitter] USB Cam not available through jit.qt.grab

Hi, 

I've bought these crappy usb webcams (Generic ZC0301P Webcam #0
) to experiment with, but I have some trouble to grab video in Jitter. 

- I've downloaded Maccam, and the videosignals are available in both Quicktime and HackTV ... but not in Max MSP Jitter. 

Firewire cams and DV cam works fine, but not my crappy usb cams. 

any suggestions, anyone?


best regards

cato