It is extremely easy to run your own videos as screensaver. All you have to do is:
a) Put your video into a seperate folder – I have only tested videos with .wmv filetype – e.g. as produced by Windows Movie Maker. But other filetypes like .mp4 may work too.
b) Right click on the desktop and go to Personalize > Screen Saver
c) Follow the steps on the picture below
