Cooperated Control Of RTP Video Stream Transfer

Because of the specialty of stream media application, the delay, jitter and the control of bandwidth of stream media data have high requirement, and that's called QoS. Stream media technology is one of the key technology of computer supported cooperated work. As the development and popularization of Internet, data stream, its transfer and control of the internet application data stream is becoming the focus of industry and its research field.The information of P2P and multicast video transfer, management, delay and jitter control, bandwidth distribution could been get from timestamp and sequence number included in Real-time Transport Protocol data packets. So, it has some meaning and practical value of the research of how to assure and enhance the QoS of stream media by CSCW based on RTP over Internet.This thesis designs one video transfer and video surveillance system on jrtplib after some detailed discussion about RTP/RTCP and synergetics. There is some normal functions such like preview, record, window selection and control, plan and plit control, and there is some special functions with CSCW characteristic like transfer based RTP, buffer control, TFRC congestion control, link choose. At last, the test of the functions of the system was done, it is working properly, suffice the anticipate desire.