Hi, the patches you mentioned were by Max Neupert - one of the organizer of the recent PdCon! :)
You can find them here: http://www.uni-weimar.de/medien/wiki/Bewegungsmelder
M
I am soliciting examples for entry level GEM patches that work on linux/windows and OSX that show how to mix a video or react to sound. I recall a set of them called Begenswelder?