- Track the surface as usual like tracking an area.
- Turn on planar tracking and draw and track the planes.
- Switch to the AdjustTracker tab in Mocha to work on the planar plane, this would create keyframes like the usual motion tracking. (See video below)
- When all the motion tracking, and planar plane tracking is close and correct, save and close Mocha.
- Back in AE, create a new composition of the same shape as the current video composition. So if it’s a wide-screen 1920×1080 video (parent comp), then create a new comp of 1920×1080 (surface comp).
- Add the picture to overlay in the surface comp, you can distort the shape to fill up the whole comp.
- Now add the surface comp into parent comp.
- Select the layer/surface you tracked in Step 1.
- In the Mocha effect, select Tracking data > Export Option > Corner Pin (support motion blur)
- Select the “surface comp” layer, in “Layer Export to”, and hit “Apply Export”
That’s it!
See: