Use your favorite video as an animated background in Ubuntu | Howto

This is a gallery where you will find nature and landscape dreamscene loops, like animated Waterfalles, Mountains, Beaches, Cities and more, you can also use your favorite video`s. so, What about using videos as animated background in your ubuntu? (Videos are in .wmv format , to use them as a background first convert them to .avi or mpg format using ffmpeg)