Hey guys, I need a little help setting up a matte in AE. I know how to make a matte, but I can't seem to figure out how to keyframe it so it moves with the subject. I'm matting out a small portion of the background behind an actor, and he's not holding still so the matte needs to move also. Hopefully someone will be able to help me. Thanks a lot!

This message has been edited. Last edited by: Heliotrope,

could youpost a refernece pic? It could help explaining

Ah I see, so you want to mask it?
Well, go in the layerdrop menu and go to masks, the click the keyframe button next to Mask Shape. Then press page down(next frame) and change the mask. repeat that(make sure the mask shape keyframebutton is pressed, or else you will just move it and not animate)

thanks a lot!