Forum Thread: How Do You Reformat a Video Stream?

Try Plex Media Server. It also has a client that can run on the Nexus 7.

Here is a link to their site:

http://www.plexapp.com/

Try a program that converts video files to other formats. My choice is Handbrake. There's versions for both PC and Mac. It's also very easy to use. In most cases, convert your file to MP4.