3 Replies Latest reply on Jul 7, 2016 3:14 AM by Roei Tzoref

    Using multiple trackers

    jeffjeffjeffjeff

      How do you use multiple motion trackers to stabilize a movie?

       

      For example, I want to use tracker 1 to anchor the position.

      I want to use trackers 2 and 3 for rotation and scale, depending which is better for that particular segment of film.

        • 2. Re: Using multiple trackers
          jeffjeffjeffjeff Level 1

          Thanks for the tip! I read this already, and it doesn't help me use multiple trackers.

           

          Depending on the segment of the film, there are different trackpoints that are visible. So I created multiple trackers. I want to use a different one, depending on the segment of the film.

          Screen Shot 2016-07-06 at 8.11.26 PM.png

          • 3. Re: Using multiple trackers
            Roei Tzoref Adobe Community Professional

            1. Offset Attach Point: maybe your problem could be solved by offsetting the track point instead of creating a new Tracker? you could track everything with the same tracker and track points and if the problem is that the feature region is obscured or goes off screen you could change the feature and search region and keep the attach point by pressing Alt as you drag. this way you don't need to use different Trackers. more about this method below.

             

            2. Nulls: if the problem is that one motion track continues another there is always the option to set one motion data to a null and the other motion data to another null and attach one null to the other so the motion continues seamlessly

             

            3. TrackerViz: if you still need to combine different track points that were tracked separately  there is this script for averaging trackers.

             

             

            about offsetting the attach point this is from the link I sent you.:

            Tracking and stabilization motion workflows in After Effects

            Set the attach point offset

            The attach point is where the target layer or effect control point will be placed. The default attach point position is in the center of the feature region. You can move the attach point to offset the position of the target relative to the position of the tracked feature by dragging the attach point in the Layer panel before tracking.

            For example, to animate a cloud above a person’s head, position the feature region on the head and move the attach point above the head. If you left the attach point centered in the feature region, the cloud would be attached to that point and would obscure the head.

             

            Attach point centered in feature region

            Attach point centered in feature region

             


            Attach point offset from feature region

            Attach point offset from feature region

             

            I will also recommend this course:

            After Effects Compositing 06: Tracking and Stabilization | Lynda.com