基于H.264可伸缩视频流的自适应媒体播放算法

doi:10.3724/SP.J.1087.2011.01956

计算机应用 ›› 2011, Vol. 31 ›› Issue (07): 1956-1958.DOI: 10.3724/SP.J.1087.2011.01956

基于H.264可伸缩视频流的自适应媒体播放算法

李晓峰,刘洪盛,任通菊

电子科技大学通信与信息工程学院，成都 611731

收稿日期:2011-01-28 修回日期:2011-02-21 发布日期:2011-07-01 出版日期:2011-07-01
通讯作者: 李晓峰
作者简介:李晓峰(1963-), 男, 四川成都人,教授, 主要研究方向：多媒体图像传输、无线通信系统;刘洪盛(1966-), 男,吉林吉林人,博士,主要研究方向：通信信号处理、多媒体传输;任通菊(1964-), 女,四川成都人, 硕士, 主要研究方向：通信技术。

Adaptive media playout algorithm for H.264 scalable video streaming

Xiao-Feng LI¹,Hong-sheng LIU²,Tong-ju RENG²

1.
2. School of Communication and Information Engineering, University of Electronic Science and Technology of China, Chengdu Sichuan 611731,China

Received:2011-01-28 Revised:2011-02-21 Online:2011-07-01 Published:2011-07-01
Contact: Xiao-Feng LI

摘要/Abstract

摘要： 为了应对H.264可伸缩视频编码（SVC）应用中网络特性的波动，提出了一种预测播放中断与缓冲区溢出风险进行及早调节的自适应媒体播放(AMP)算法。该算法估算网络流量与视频图像组（GOP）结构中各帧长度用于风险预测，通过K步调节过程实现良好的调节平滑性与速度，并利用SVC的可伸缩性尽量减少溢出带来的质量损失。仿真结果表明，该算法在抑制播放中断、处理缓冲区溢出与抖动性能等方面，优于现行的平滑AMP与常规AMP算法。

关键词: 自适应媒体播放, 可伸缩视频传输, 视频流, 多媒体通信

Abstract: To cope with the variation of network conditions in scalable video streaming, a new Adaptive Media Playout (AMP) algorithm was proposed which predicates the risk of playout outage and buffer overflow and adjusts the frame rate in advance. The algorithm estimated the throughput of network and the lengths of frames in the video’s GOP structure for risk predication, realized adjustments in K steps for good smoothness and speed, and reduced quality loss of the video by exploiting the scalability of SVC stream. The simulation results show that the proposed algorithm outperforms the existing smooth and conventional AMP algorithms in outage suppressing, overflow processing and jitter performance.

Key words: adaptive media playout, scalable video coding, video streaming, multimedia communication

李晓峰刘洪盛任通菊. 基于H.264可伸缩视频流的自适应媒体播放算法[J]. 计算机应用, 2011, 31(07): 1956-1958.

Xiao-Feng LI Hong-sheng LIU Tong-ju RENG. Adaptive media playout algorithm for H.264 scalable video streaming[J]. Journal of Computer Applications, 2011, 31(07): 1956-1958.

参考文献

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[7]LI Y, MARKOPOULOU A, APOSTOLOPOULOS J, et al. Content-aware playout and packet scheduling for video streaming over wireless links[J]. IEEE Transactions on Multimedia, 2008, 10(8):885-895.

[8]LUAN T H, CAI L X,SHEN X. Impact of network dynamics on users video quality: Analytical framework and QoS provision[J]. IEEE Transactions on Multimedia, 2010,12(1):64-78.

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[10]

Joint Draft ITU-T Rec. H.264/ISO/IEC 14496-1/ Amd. 3 Scalable Video Coding[S]. Joint Video Team (JVT) of ISO/IEC MPEG & ITU-T VCEG, 2007.

基于H.264可伸缩视频流的自适应媒体播放算法

Adaptive media playout algorithm for H.264 scalable video streaming

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