RealPix: The SMIL Graphics Format: Tutorial on RealPix, that allows graphics to be streamed over web as part of Synchronized Multimedia Integration Language (SMIL).
SMIL - Builder.com: Information on Synchronized Multimedia Integration Language(SMIL) and its importance.
Tutorial: RealSystem G2 & SMIL: This tutorial from developer.com's Scott Clark gives a step by step guide of what it takes to create a SMIL presentation that can be viewed in RealPlayer.