You can create animations, insets, and split screens
by manipulating a clip directly in the Program Monitor and setting
keyframes for the Motion effect. By adjusting a clip’s position
and scale in the Program Monitor, you reveal clips in the tracks
below it and can create interesting compositions.
When you animate a clip’s position, the clip’s motion is represented
by a motion path in the Program Monitor. Small white Xs represent
keyframed positions, dotted lines represent positions at interpolated
frames, and the circular clip anchor point symbol represents a spot
in the clip, its center by default, at the current frame. The spacing
between dots indicates the speed between keyframes: wide spacing
shows fast motion, while tightly spaced dots show slower motion.