互联网的普及和多媒体技术在互联网上的应用，迫切要求能解决实时传送视频、音频、计算机动画等媒体文件的技术。在这种背景下，流式传输技术及流媒体应运而生。流媒体是指在Internet/Intranet中使用流式传输技术的连续时基媒体，与传统的单纯下载相比较，流媒体具有明显的优点 The popularization of the Internet and the application of multimedia technology on the Internet urgently require technologies that can solve media files transmitted in real time such as video, audio, computer animation and the like. In this context, streaming technology and streaming media came into being. Streaming media refers to the continuous time-based media using streaming technology in the Internet / Intranet. Streaming media has obvious advantages compared with traditional pure downloading