Apple macbook camera not working with flash

I'm using actionscript 3 to build a flash object which uses the camera for recording.

This works great on all platforms except Apple macbooks series.

Here is the code I'm using to use the camera:

cam =Camera.getCamera();
cam.setQuality(0,80);
cam.setMode(400,170,30,true);
cam.addEventListener(StatusEvent.STATUS, cameraStatusHandler);

And this is what it looks like on Apple macbooks series:

All help will be appreciated !

Thanks.