Learn the basics about video compression: what delta frames and key frames are.
"A video (file types like AVI and MPEG) is a collection of several images being shown. Each image is called frames and the amount of images shown per second is called frames per second or simply FPS. The more frames per second your video has, the better, since more realistic the image will be. Videos are usually saved using at least TV quality settings, i.e. 30 frames per second. "
You can check out this guide over at Hardware Secrets.
The basics of video compression
Posted on Thursday, February 02 2006 @ 3:11 CET by Thomas De Maesschalck