Update from the introwerks Rutt Etra Emulator for Processing. Now you can use it with your PC camera or external cameras. Also, you can send video via Spout. It's also sound reactive.
For using the sketch with a DSLR or another external camera, you can use SparkoCam as a virtual camera.
To export the sketch as a video, install the Video Export librarie and FFmpeg. Then you can run the sketch (I'm testing thins function so please notify any error!)
Pierre Puentes, aka DRLZTN, 2016
(Currently working on a MaxMSP patch to connect other audio inputs to processing via OSC)