Repost of more Webcam motion detection examples
Just in case you could not view it last time. Move your hands around instead of just up and down. Works much better with a stationary bg.
Here’s the demo video 
~betaruce/flash8/webcam_handControl_2_demo.swf
and here’s the real thing. have your webcam ready~
Go to my Flash 8 page for fla and other experiments.