HELP: Converting Movieclip Animation to Bitmap animation

So I’ve been trying to figure this out for the last few days and am now going insane.

I have an idea for an intense web user interface, but I"m stuck at a single as3 problem:
I’m trying to use the Displacement filter to add a distorted effect to an underlying animation.

I’ve figured out most of the displacement. But I can’t figure out how to displace the lower animation. I know that I need to convert the vector into a bitmap so I can use BitmapData then call it into the Displacer movieclip, but I am lost on how to convert the movieclips animation into a Bitmap animation.

Does anybody know how to do this?