How do they do the severed limb effect as seen in so many movies? I know how to do green screen compositing when everything is locked down and nothing is moving too much, but in the movies people are walking around and interacting with other characters etc. This is what I would like to be able to do for an upcoming short film we are planning where a guy lost both his legs and he is sitting in a wheel chair going from point A to B, similar to Lt. Dan in Forest Gump.
"I have not failed 700 times. I have succeeded in proving that those 700 ways will not work. When I have eliminated the ways that will not work, I will find the way that will work."
---THOMAS EDISON on inventing the light bulb.