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Computes the movement of maskshapes based on the movement of trackpoints. It is easy and flexible to use. In particular you don’t need one trackpoint for each maskpoint.

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Tracker2Mask This script will run in After Effects 7This script will run in After Effects CS3This script will run in After Effects CS4

Version: 2.1   Sign up to be notified by email when a new version of this script is posted

Tracker2Mask is an After Effects script that computes the movement of mask shapes based on the movement of trackpoints. It is easy and flexible to use. In particular you don’t need one trackpoint for each maskpoint.

    The workflow is as follows:

  1. track a few points (something between one and four points is reasonable, even for complex mask shapes) that represent the basic movement of the object which you want to draw a mask around
  2. keyframe the mask by hand in the first and last frame
  3. use the script to predict keyframes in between (the script uses the tracker information for this prediction which is hence much better than the simple interpolation done by after effects itself)

Step 3) can be interleaved with manual corrections which leads to a quite fast, assisted rotoscoping workflow.

Tutorial 1

In this first tutorial I show how to rotoscope the shape of a moving car based on only four trackpoints, for simpler shapes often one trackpoint is sufficient.

Tracker2Mask Tutorial 1

Tutorial 2

In the second tutorial I describe some new features of Tracker2Mask that allow local modifications of masks.

Tracker2Mask Tutorial 2

Last updated August 25th, 2009
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About the author

I started compositing and working with After Effects back in 2007 as a free time activity. As a computer scientist I am used to a formal, mathematical way of thinking which allows me to push the limits of After Effects. Therefore, I started developing scripts that let people perform complex tasks via easy and intuitive interfaces.

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