I’ve just checked in some code to add support for live capture from webcams - please have a go and let me know what you think!
It’s disabled by default because to build it on windows requires some bodges to the win32 headers (…you can read my comment about this in juce_win32_NativeIncludes.h), but you can enable it with the JUCE_USE_CAMERA config, and I’ve added a new page to the demo app to let you play with it. Enjoy!