Here are some vidoes I will refer to in lectures. A lot of the clips are on you tube but many others are uploaded separately and you must download them to play them. They are mainly background and serve to illustrate points
First of all, you should download VLC media http://www.videolan.org/vlc/
and make it your default player. It saves all the codec decodec problems. You will not be able to play some of these without it.
http://www.sotonsom/vids/