[David Downie]

https://library.creativecow.net/articles/rabinowitz_aharon/Mocha_Tut_1.php

In this Tutorial, Creative Cow Leader Aharon Rabinowitz shows you a complete workflow for using Imagineer Systems Mocha with Adobe After Effects to create a perspective corner pin effect – an effect typically used for sign replacement or compositing video on a computer or television screen. Even if you’re not using After Effects as your compositing application, you will still find the lesson extremely useful, as it focuses almost entirely on the use of Mocha’s powerful 2.5D planar tracking system. After Effects users not using Mocha will also find some of the compositing tips at the end very helpful as well.