After Effects includes the mocha for After Effects (mocha-AE) standalone motion tracking application from Imagineer Systems. This planar tracker handles motion-tracking jobs that would be difficult with the built-in After Effects motion tracker. So, whether you need to replace a billboard on a bus or the contents of a mobile phone screen, try mocha for After Effects.
You can download a free, fully functioning demo to try here: http://www.imagineersystems.com/products/mochaAE
