摘要
为了达到监控系统视频的实时性和流畅性要求,针对现有拥塞控制算法对实时视频流控制的不足,提出了一种新的基于RTCP反馈的拥塞控制算法。该算法通过客户端反馈的RTCP包得到关键参数,估计回环时间和丢包率,预测网络带宽,进而调整服务器端视频流的编码码率。实验证明,该算法能根据网络状况动态调整实时视频流的编码码率,使客户端观察到实时流畅的画面。
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.
出处
《计算机科学》
CSCD
北大核心
2010年第4期296-298,共3页
Computer Science
