I'm currently working on some very interesting VFX shots. One of them includes a scene where a person spontaneously combusts. In other words, they explode for no apparent reason. This would be relatively easy to do if it were a locked off shot, but it's done handheld. So basically, I've been killing myself trying to track it in AE and trying to find a way to fill in the background after I've removed the actor with some basic rotoscoping..
The shot is like this: actor walks around a bit in the frame. He 'explodes' and then quickly runs out of the frame. Then there is a few seconds of a handheld 'cleanplate' which doesn't do much for me because it's a moving shot. Oh, and bonus points, because I can't cut to a point when the actor is already gone because he throws all of the things he was carrying in an explosive fashion.
I heard that mocha or something similar can help, but I'm not sure. Anyone know how I can accomplish this?