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基于实时流媒体传输系统的H.264组包算法研究
引用本文:魏聪颖,牛建伟,吉海星,胡建平.基于实时流媒体传输系统的H.264组包算法研究[J].计算机科学,2007,34(8):41-44.
作者姓名:魏聪颖  牛建伟  吉海星  胡建平
作者单位:北京航空航天大学计算机学院,北京100083
摘    要:有线和无线网络上的实时流媒体传输技术已成为研究热点而其中组包策略的选取是其中的一个关键问题.本文首先设计了一种基于RTP的H.264实时流媒体传输系统模型,在此基础上提出了适用于H.264实时视频流传输的RTP组包算法HMP.该算法针对H.264 NAL视频流特点,在考虑到视频流关联性的同时加入了对重要信息的保护.实验结果证明,HMP算法在网络丢包率较大的情况下仍能获得良好视觉质量.

关 键 词:H.264  NAL  RTP  实时流媒体传输系统  组包算法

H.264 Packetization Algorithm Research Based on Real-time Stream Media Transportation System
WEI Cong-Ying,NIU Jian-Wei,JI Hai-Xing,HU Jian-Ping.H.264 Packetization Algorithm Research Based on Real-time Stream Media Transportation System[J].Computer Science,2007,34(8):41-44.
Authors:WEI Cong-Ying  NIU Jian-Wei  JI Hai-Xing  HU Jian-Ping
Affiliation:School of Computer Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083
Abstract:Real-time stream media transportation over wired/wireless network has become a focus of research.And the packetization algorithm is the key technology.This paper describes a H.264 real-time transmission module based on RTP,and puts forward a RTP packetization algorithm for H.264 video which is called Hybrid Mode Packetization(HMP).HMP considers video stream content correlation and unequal protection of important information with H.264 NAL video features.Simulation results show that HMP can achieve good perceptual picture quality for H.264 video under packet-loss network conditions.
Keywords:H  264 NAL  RTP  Real-time stream media transportation  Packetization
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