Oliver's simple video and canvas demo

A very simple demo of using the the HTML5 canvas element to process video. Simply performs per pixel edge detection as quickly as it can as HTML5 doesn't provide per-frame updates.
This is a very simple demo that originally just started out as a testcase, but it shows that video filtering is possible in JS.
The region being filtered can be controlled by dragging the mouse around in the filtered output.
Framerate: 0