[David Cohen]

i am trying to add shadows to a keyed piece of footage. unfortunately the character moves around mostly forward and back. which creates a problem when i try to add shadows. i am currently using a rendered footage with alpha of the keyed footage and bringing the contrast down and orientating in 3d unfortunately i have to hand animate the shadow when he moves which looks choppy. i would prefer to have something more consistent like 3d shadows but the footage only moves in a 2d environment therefor adding 3d shadows only works before he moves. please help!