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从MPGE-4系统的分层结构出发,介绍了场景描述、交互性、基本流和同步机制等关键技术问题。叙述了各层所涉及到的基本功能和一些常用的MPEG-4系统工具。最后展望了MPGE-4系统在IP上的发展。
Based on the hierarchical structure of MPGE-4 system, the key technical issues such as scene description, interactivity, basic flow and synchronization mechanism are introduced. Describes the basic functions involved in each layer and some common MPEG-4 system tools. Finally, the development of MPGE-4 system on IP is forecasted.