Problem with flv and actionscript 3

I’m trying to turn off the full screen default for flv video in as3, and have written the following code on frame 1 of my Fla.

stage.displayState = StageDisplayState.FULL_SCREEN;
import flash.system.fscommand;
fscommand(“allowscale”, “false”);
video1.fullScreenTakeOver = false

This achieves what I want on opening my exported projector - the flv on frame 1 displays correctly.

However when I click to move to another keyframe, and then return to the flv keyframe - the video reverts to fullscreen. It seems to ignore the ‘fullScreenTakeOver = false’ when you start moving around the timeline.

Has anyone got any ideas on how to remedy this? Perhaps some kind of global flv listener - wouldn’t know where to start coding this in as3 though.