摘要
同步是多媒体业务中一个重要的服务质量(QoS)。分析网络中多媒体传输同步的基本问题,提出一种媒体内自适应缓冲控制方案。该方案采用接收端缓存媒体单元补偿网络的时延抖动,缓冲区采用循环队列的结构,当缓冲区达到要求预取数时,开始从缓冲区取帧。测试结果表明,应用该缓冲区方案能够补偿由于网络传输时延特性变化而引起的失步,从而使接收端播放平滑连续,对媒体通信质量有较大提高。
Synchronization is an important Quality of Service（QoS） of multimedia business,the basic problems of synchronization ef network - based media streams are analyzed, algorithm about adaptive control of the buffer of intra - media is presented. The receiver caching media unit is to compensate for the delay jitter,buffer uses the structure of cycle queue,when the numbers of prefetch is to achieve the requirement, beginning to get frame from jitter buffer. The experimental result shows that：taking advantage of the buffer technology can compensate asynchronies introduced by the variation of the average delay, keeping good quality of continuous presetion and improving the quality of media obviously. Keywords：
出处
《现代电子技术》
2009年第11期77-79,共3页
Modern Electronics Technique
基金
沈阳市科技项目应用基础研究计划
无线网络视频监控系统关键问题研究及应用(1081236-1-00)
关键词
同步
QOS
媒体内
缓冲区
循环队列
synchronization
QoS
intra - media
buffer
cycle queue
