In this first article of a new series on the IBM developerWorks site introduces you to their method for creating your own "on-demand video website" with PHP:
In Part 1 of a three-part series on creating an on-demand video site with PHP, we begin by looking at the different flavors of digital video and their particular nuances. When creating video for the Web, the overarching issue you need to keep in mind is whether you want your video to be small and easy to download or whether you want it to be the best quality possible.
They'll also show you how to convert the video into the Flash Video format to make it easy to pull into an in-page Flash player. You'll need to register or log in to get to the article.