计算机科学 ›› 2011, Vol. 38 ›› Issue (7): 100-102.
• 计算机网络与信息安全 • 上一篇 下一篇
王正君,王友钊
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基金资助:
WANG Zheng-jun,WANG You-zhao
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摘要： 网络监控系统中的实时视频质量容易受网络带宽影响。针对此问题，提出了一种基于RCTP控制报文的闭环码率调控策略，即通过分析RTCP接收者报包(Receiver Report, RR)的反馈信息，调整编码器码率，以自适应网络承载能力;又进一步针对H. 264码流传输的高突发性，提出了码流流量整形策略，用以抑制数据突发，从而避免因突发引起的瞬时网络阻塞，减小网络丢包。实验结果表明，本策略有效地降低了码流的传输丢包率，提高了实时视频质量。
关键词: 网络监控，RTCP，码率调控，流量整形，实时视频质量
Abstract: The quality of real-time video in network monitoring system can be easily affected by network bandwidth.This paper introduced a Closed-Loop rate control strategy based on RTCP. This strategy analyzes the feedback of the receiver report(RR) in RTCP,adjusts the bit rate of encoding,adaptive network carrying capacity. This paper also proposed a stream traffic shaping policy to solve the problem of the data burst of H. 264 stream by inhibiting data burst,thus avoiding sudden transient network congestion and reducing packet loss. Experimental results show that the strategy effectively reduces the transmission stream packet loss rate and improves the quality of real-time video.
Key words: Network monitoring, RhCP, Rate control, Traffic shaping, Quality of real-time video
王正君,王友钊. 基于RTCP的闭环码率调控和流量整形策略[J]. 计算机科学, 2011, 38(7): 100-102. https://doi.org/
WANG Zheng-jun,WANG You-zhao. Strategy of Closed-loop Rate Control and Traffic Shaping Based on RTCP[J]. Computer Science, 2011, 38(7): 100-102. https://doi.org/
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