In the Effect Controls panel, select Motion again.In the Effect Controls panel, drag the playhead forward in time.Click the stopwatch next to Position to add a keyframe, visible in the Effect Controls panel.In the Program Monitor, drag the track matte clip to its starting position.Open the Effect Controls panel, and select the Motion effect heading.Select the track matte clip in the Timeline (the clip on V3), and position the playhead at the beginning of the clip.(If using a title or a graphic that contains an Alpha channel, you can choose Composite Using: Matte Alpha.) The light areas from the clip on V3 reveal the clip on V2, while the dark areas from the clip on V3 reveal the clip on V1.Ī matte containing motion is called a traveling matte or moving matte. You can create this effect by animating the position off the reference clip.
This clip will be revealed by the track matte.