CaptureMJPEG works on Linux, OS X and Windows.
Tested with Processing 1.0.4
Due to issue
#4 CaptureMJPEG 1.0 works only on Processing < 1.0 except in OS X 10.5.
Please update to CaptureMJPEG 1.0.1
Please follow Getting Started instructions.
CaptureMJPEG is released under the LGPLv3 license.