Use the modelling tools
to define the source mesh so that it outlines the original shape
of the image in the front clip.
To define the source mesh for the original image:
Go to the first frame of the clip.
Click Front Source to define the source
mesh for the front clip.
Add a mesh over the area to warp and
modify its shape to match the original image.
If you are using a live-action or moving
clip, the source mesh must follow the movement of the image. You
can either modify the mesh manually throughout the clip, or use
the Stabilizer to track the movement in the clip. See
Modifying the Meshes for Live-Action Clips.
