I used this today to put a couple of movies on the Playbook for my son. Worked great, no problems. I saved the files in a MP4 File Format (m4v extension) using the High profile
There are format settings for different devises, not all of them are on Handbrake so I'm using a setting that someone had set for the Galaxy Tab for now till someone has time to play with HandBrake and figure out the best setting for it ?