I've recently discovered a website that adds effects to your webcam photos,
and I came through an interesting effect, the FIRE effect.
It basically detects movement and adds a little bit of distortion and fire colors.
Go see for yourself : http://webcamtoy.com/
(Click on the left arrow until you see the Fire effect, that's in between the Underwater and Snow effects, of just click on the image and a list of the effects will show up)
And I immediately thought of recreating this effect in After Effects.
So I wondered if you guys could help me out !
(Notice there is no rotoscoping in the website, maybe just some motion blur detector or somethin')
Also, found this video, that's close to the same effect :