Controlling video - zoom, start, stop

I am evaluating Prezi and I reallly want it to work.
The challenge is inserting video as part of the path in such a way that;

1) One can control the zoom level (i dont want it to fill the screen)
2) The video automatically starts when the presentation reaches that portion of the path.
3) The presentation advances when the video finishes OR the presentation advances after a set period of time and the video continues until it is finished

So far I have been unable to achieve any of these.
To manage the zoom, yes I have tried frames, but the video wont start.
I did find an interesting video on youTube that described a methodology that used SWF files and I tried it. Unfortunately, the swf starts playing immediately upon load and disappears once its finished never to be seen again.

I am really hoping that someone can tell me if this can be done - my alternative is a full on video production (PremierPro/AfterEffects) so i am rooting for Prezi!!!!

(yes I have tried all methods for both online and desktop)

Many thanks

   Philip . . .