Thank you for your post.
I am able to replicate the issue on Mac OS X 10.7.3. It works as expected under Windows XP (SP3).
It appears the movie will insert at 100% size regardless of the zoom. Therefore, at 200% zoom, it will display at 50% size; the same size it would appear if the zoom was set at 100%.
Clicking the play button on the movie file will not play, but if you click the area in the Container field where the play button should appear, then it does play.
I have forwarded your post along with my findings to our Development and Testing departments for review. I will keep you posted as more information becomes available to me. In the mean time, only insert videos at 100%.