pyvideoinput is a wrapper of the C++ library for capturing video streams presented by Evgeny Pereguda on CodeProject:
http://www.codeproject.com/Articles/776058/Capturing-Live-video-from-Web-camera-on-Windows-an Repository: ssh://git@git.codeproject.com/evgeny-pereguda/videoinput
git clone http://github.com/pupil-labs/pyvideoinput
open command line and navigate to local git folder
run "setup.py install"
test.py
imports the module and runs it. Requires OpenCV.