I'm absolutely new to AE, trying to insert a funny pic of a friend into the first 8 seconds of Nickelback's Photograph and have the picture move with the video. It turned out not so easy and I'm stuck.
I've managed to track the part where he pulls up and holds the picture. However, the tracking points are still there well before the picture is held up and well into the start of the video. Same goes for after the shot is changed to a closeup of his face and well into the end of the vid. How do I set start and end points to the tracker? I can't seem to find the option. Nor can I seem to remove the tracker from specific frames.