Showing off your rice with a webm, the easy way.
If you don't have root and don't want to mess with ADB commands then all you need are these two programs

1. Screen recorder, no root needed, just a usb cable and a computer
http://www.skipser.com/i/2/files/general/AndroidScreenRecorder.zip
2. A way to convert an mp4 to webm (will require FFMPEG)
https://github.com/Wsheerio/webmConverter

These work for windows, I have not tried on linux or mac.