A group synchronization mechanism for live media in multicast communications
A group synchronization mechanism for live media in multicast communications
复制标题
一种多播通信中直播媒体的组同步机制
DOI：
10.1109/glocom.1997.638431
复制
发表时间：
1997
期刊：
影响因子：
--
通讯作者：
S. Tasaka
中科院分区：
文献类型：
--
作者：
Yutaka Ishibashi;S. Tasaka
为了支持直播媒体的多播通信，作者提出了一种组同步机制，并增强了他们之前为直播媒体提出的流内/流间同步机制。所提出的方法利用网络延迟的估计来调整目的地之间的输出定时。作者在口型同步实验系统上实现了该机制。将源端捕获的发言者的现场视频和语音进行组播，然后在目的地进行同步输出。本文还介绍了输出间隔变异系数、总暂停时间、同步均方误差、平均输出速率和平均延迟等系统性能。
To support multicast communications for live media, the authors propose a group synchronization mechanism and enhance an intra-stream/inter-stream synchronization mechanism which they previously proposed for live media. The proposed method employs estimates of network delays for adjustment of the output timing among the destinations. The authors have implemented the mechanisms on a lip-synch experimental system. Live video of a speaker and his voice captured at a source are multicast, and then they are synchronized and output at the destinations. This paper also presents the system performance such as coefficient of variation of output interval, total pause time, mean square error of synchronization, average output rate, and average delay.