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| | Tracking a Matte in Effect* |
 | | In my matte, since it was trees, I had to make holes inside the matte where you could see through, because the creature would need to cast a shadow onto the structure behind the trees, and because there were areas in the tree where you could see through it. |
 | | We will be using this 2d tracker to track the movement of the matte object (the tree) through the scene and use that data to move the matte appropriately. |
 | | For subsequent mattes (the 'holes' in your matte), set up a tracker to track position, but instead of tracking the matte, simply import the tracking data from the main matte, and the sub-mattes will move with the larger matte. |
| www.digitalproducer.com /pages/tracking_a_matte_in_effect.htm (1909 words) |
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