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by devolve 5239 days ago
I found a screensaver a couple of years ago that did basically the same thing (http://i.document.m05.de/?page_id=438), and I improved on it some (quadrupled the outputs).

Shameless plug: I don't know if it still works, but if you have a Mac you could try: http://lost-found.se/projects/surveillance-saver-quad/