You can play many types of videos on the screen, using mplayer you don't even need to run X and you can script the movies to play using Python. We'll show you how to just play one video for now.
To demo, we'll use an mp4 of Big Buck Bunny for 320 pixel wide screens. Below we show you how to create/resize videos, but to make it easy, just download our version with:
If you don't have mplayer yet, run
sudo apt-get update
sudo apt-get install mplayer
to install it. It may take a few minutes to complete
OK now you just have to run:
sudo SDL_VIDEODRIVER=fbcon SDL_FBDEV=/dev/fb1 mplayer -vo sdl -framedrop bigbuckbunny320p.mp4
If your video is not sized for 320 wide, you may need to add a
-framedrop so that it will resize - note that this is quite taxing for the Pi, so it may result in a choppy or mis-synced video!
You can download it from the link above, we'll be using the 720p AVI version.