I've been developing a short FAQ on Halo 3 Saved Films.
Q: How do you change the view perspective on a saved film? I would like to see how my opponents played.
A: you cannot.
Remarks:
Oh. Well. That helps, at least. Thanks.
...That will be included in the final game but not now. Right now all you can do is see what changes you can make in your play style.
Halo 3 Saved Films FAQ
Halo 3 Topics