I'm looking for a cross-platform video capture library, for webcam access. One that wraps V4L/V4L2 on Linux, DirectShow on Windows, and QuickTime on the Mac.
C or C++ is preferred, but I can work in Java or Python if those have better options for libraries.
Openframeworks has a video grabbing component which is meant to be cross platform, perhaps you could just use the framework for that piece :)