For a school project I have to create a small animation movie using Blender. The idea was that one person shoots a soccerball, the ball transforms into a puck, and the second person shoots that one away. For this I masked the original ball and puck, and put the cam straight on the background movie - untill the ball gets out of screen, at that moment the cam moves to the next movie.
I added these background movies using the properties menu (background images).
The problem is that I have no idea how to render these background movies. I found a few tutorials on google, but none for multiple background movies and with a moving cam. Can anyone help me out please?