You can use any paint software that you want. That could be Photoshop, GIMP or any number of other applications. The important bit is to create a clean frame (a cleanplate) for Mocha to work with.
Hi, very useful that video...but I follow the steps to remove a permanent logo or letters and this process not working when the object is fixed for 30 seconds and the image is in moving. Have you got some tutorial about it?