You can define how the foreground image of a multilayer effect moves across the background video by building a motion path, or string of keyframes.

You can define a motion path on multilayer video effects, such as Picture-in-Picture effects. Use the wire-frame preview feature when you want to see the path an image takes on the screen.

When you are creating a motion path that moves beyond the viewing screen, you can use the Reduce button to view an outline of the image at a reduced scale. The reduced scale view shows the area outside the background image and allows you to extend the motion path into that area. The Enlarge button returns the screen to full view.