A Live Streaming Media Technology-based Video Conferencing System

As a brand-new multimedia communication means, videoconference is popular with many enterprise customers gradually because of its economy, convenience and distance-free, which becomes a hot issue recently. Standard protocols for videoconference mainly are H.320 and H.323 framework protocols published by ITU-T, these two protocols contributed to the standardization of videoconference and the development of videoconference technology.Meanwhile, traditional videoconference based on H.320 and H.323 protocols limit the scale of the meetings greatly with the influence of protocol mechanism, which couldn't implement the content distribution in large scale, and then couldn't meet the needs of watching the videoconference in large scale.Streaming Media is a kind of new technique for network media. It is a kind of media transmitted by stream on Internet or Intranet, which usually adopts protocols like RTP, RTCP and RTSP as real-time Video/Audio synchronization and flow control to implement data flow control, real-time broadcasting and watching on demand.In order to help more authorized users watch videoconference in real-time, the thesis presents a new method of combination with Streaming Media and videoconference to implement meeting content distribution in large scale. This method utilizes the good accessibility, and expansibility of stream media, the high efficiency of bandwidth, and the combination between multicast and unicast to implement Live broadcast of videoconference in real-time. The method can meets the needs of watching the meeting content in large scale. It can expand the scale of videoconference greatly.The thesis imports the technology and mechanism like digital rights management, identity verification and customer authorization to guarantee the security of content of meeting and implement the management to customers.The combination of streaming media and videoconference proposed by the thesis implements the distribution of meeting content in large scale to enlarge the scale of meeting, and can meet the needs of watching real-time videoconference in large scale to expand the application scope of videoconference.