Looking at the code from the video, it looks like they're just putting out an FXG file (http://en.wikipedia.org/wiki/FXG http://en.wikipedia.org/wiki/FXG) and h

Looking at the code from the video, it looks like they're just putting out an FXG file (http://en.wikipedia.org/wiki/FXG http://en.wikipedia.org/wiki/FXG) and have a JS library to read that format and execute it on the canvas. This is actually very interesting because then the Flash plugin is really just boiled down to a Javascript library (which some folks have already done before with the SWF format). Combined with HTML5 <video> and <audio> elements, there's really only webcam and cursor access that I can think of missing in this kind of implementation. Cool!