First part describes the principle and structure of Streaming System which includes Streaming Server, Network Integration Node and streaming protocol like RTP, RTCP and RTSP.

• 本文共分为4部分，第一部分首先介绍了国内外流媒体系统的原理和组成包括流媒体播放器（Steraming Server)和 网络集成服务器(Network Integration Node，NIN)。