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ＭＰＥＧ－４把对象当作帧的最小可访问单位，这使基于内容的具有灵活性和交互性的应用成为可能．本文在介绍ＭＰＥＧ－４系统的基本概念后讨论了使用ＭＰＥＧ－４系统创建应用的过程，并给出一个视频点播应用的原型，它运用对象建模技术使用对象图和状态图来描述．
MPEG-4 treats objects as the smallest accessible unit of a frame, making content-based, flexible and interactive applications possible. After introducing the basic concepts of the MPEG-4 system, this paper discusses the process of creating an application using the MPEG-4 system and presents a prototype of a video-on-demand application using object modeling techniques using object diagrams and state diagrams.