Studies on Dynamic Adjustment Mechanism of Real-time Video Streaming on Surveillance System

In order to design a real-time and fluent video surveillance system,this paper presented a new RTCP-based feedback congestion control algorithms to make up for the deficiencies of current way using the congestion control algorithms.In the algorithm,utilizing the key parameters in the feedback TCP packet received from the client,we can estimate the circle time and packet loss rate,forecast the network bandwidth to adjust the encoding bit rate of server-side video stream.Experiments show that the algorithm can adjust the video stream encoding bit rate dynamically according to network conditions so that the client can get the smooth real-time video stream.