Microsoft developed the Windows DreamScene, a utility that uses GPU instead of CPU to allow videos and .gif and other optimized animations to be used as desktop wallpapers; additionally.AVI files can also be played by altering the file extension.
One of the purported advantages of DreamScene over previous methods of desktop animation is that it makes use of the GPU for display instead of the CPU, leaving the latter free to perform user tasks. Windows DreamScene is a utility that allows videos and .gif and other optimized animations to be used as desktop wallpapers. In addition, AVI files can be played by altering the file extension. 
