I've loaded a swf with a video inside of it. I don't have the original FLA for this swf, so I am trying to target the video object with action script

I have traced the object as an AVM1Movie, using:

Code:
videoSwf.getChildAt(0).getChildAt(0));
What I want to do is, improve the video by enabling smoothing and deblocking, but adding .smoothing = true; throws up errors

Is there a way of achieving this?