In the previous two installments in this series (Editors Guild Magazine MAR-APR 10, MAY-JUN 10), I covered time-tested and traditional techniques for rotoscoping footage using After Effects and Photoshop. These techniques, involving animated mask shapes or exporting frames to Photoshop, while fundamental and effective, require the user to determine the edge of the roto matte manually, and don’t really rely on the computer to assist with in-betweening matte shapes from frame-to-frame.
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