一种视频流码率自适应调整算法  

An Algorithm of Video Stream Rate Adaptive Control

作　　者：彭锴[1] 

机构地区：[1]北方工业大学信息工程学院,北京市100041

出　　处：《中国电子商情（通信市场）》2014年第2期46-52,共7页

摘　　要：在基于3G网络的多媒体调度系统中,为了提高视频数据传输的实时性和可靠性,提出一种视频流码率自适应调整算法.通过改进Pathload算法,利用视频数据包的单向延时来估计网络有效带宽,根据网络有效带宽与视频发送速率之间的大小关系自适应地调整视频流码率.在多媒体调度系统上进行了实验验证,结果表明,该算法可以比较准确地估计网络有效带宽,有效地改善了视频数据传输的实时性并提高了接收端的视频数据解码质量.In multimedia scheduling system based on 3G networks, In order to improve the timeliness and reliability of video data transmission, Propose an algorithm of video stream rate adaptive control. Estimate the effective bandwidth of the network by one-way delay of video p -ackets, Adaptive control the video stream rate by compare effective bandwidth of network and video transmission rate. Experiment on multimedia scheduling system, Results show the algorithm could estimate effective bandwidth of network accurately, Improve the real-time of video data tra- nsmission effectively and Improve the quality of Decoded video data.

关 键 词：信号与信息处理 调度系统 自适应编码 网络带宽估计 

分 类 号：TN919.81[电子电信—通信与信息系统]