The Track Points behavior, a member of the Shape behavior subcategory, allows you to do either of the following:
Track the control points of a shape, paint stroke, or mask to reference features on a source clip. For example, you can draw a mask around a car in a clip and then track the control points of the mask to the moving car, cutting the car out of the background. You can then apply effects to the isolated car, and the surrounding image is not affected.
Apply existing tracking data recorded by the Analyze Motion, Match Move, or Stabilize tracking behaviors to the control points of a shape or mask.
Note: The Track Points behavior can be applied only to shapes (including paint strokes) and masks.