First, you have to encode your video into the RealVideo format. If you don't have a program to encode into this format, you can get the basic version of RealProducer from their site . To learn a bit more about producing video for use with RealPlayer, I recommend visiting their producing video section for more information. Once you have encoded the video and uploaded it to your server, all you have to do is point to it in your SMIL file. Here's a simple SMIL script with audio and video playing together.
Text Let's sink our teeth in a little more and add in some text.
When using SMIL to control your RealPlayer presentation, you'll begin by writing a RealText script. Think of this as streaming text. Not only can you add links for Web sites, email, or other audio links, but you can add in links to jump to various parts of the audio stream. Let's say you've got a tune with a great chorus but a slow lead into it. In my demonstration I chose the background color, a standard text display, and incorporated Web links, audio links, and a chance to email me.