For an OpenCV (Open Computer Vision) project I need to be able to capture frames from a camera in real-time.
Only the composite output of the camera is available for me.
I want to connect the camera via a composite to usb device and use a library or OpenCV code to capture the frames directly.
There are a lot of devices on the market but I am not sure whether they will work. Any help or suggestions are extremely welcome!

FYI: I am using Ubuntu 10.04, OpenCV latest SVN and Qt/C++ on an ASUS X52J.

Thank you very much!

Cheers, Erik