Just got my motorola xoom and wanted to try out some of my high def movies on it. The original movies were 1080p mkv format but ive used a tool called mkv2vob to get them to stream to my ps3 (best thing ever).. so now my files are in mpeg format. ive used handbrake to convert the now mpeg files to mp4.. although the vidoe plays it is very choppy.. sound works fine but the video jumps 15 sec at a time.. are there any specific settings i should setup in handbrake i should use.. ive used qqplayer, rock player and even the stock cid player and have had similar issues.. any help would be appreciated...