Thanks for responding..
I already have the footage, and its footage of someone walking towards the camera. I am trying to loop that scene so that at a certain point it looks like he is walking in place. I am assuming the best way would be to set the footage to loop so that it can achieve the effect.
Ideally if it does work, I can put it on a track and then have other things on other tracks, like moving text,etc.
Let me know if I can be clearer.