Title :
A group synchronization mechanism for live media in multicast communications
Author :
Ishibashi, Yutaka ; Tasaka, Shuji
Author_Institution :
Dept. of Electr. & Comput. Eng., Nagoya Inst. of Technol., Japan
Abstract :
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
Keywords :
asynchronous transfer mode; delays; multimedia communication; synchronisation; telecommunication control; telecommunication networks; visual communication; ATM network; average delay; average output rate; destinations; group synchronization mechanism; intra-stream/inter-stream synchronization; lip-synch experimental system; live media; live video; mean square synchronization error; multicast communications; multimedia applications; network delays; output interval variation coefficient; output timing; synchronization control; system performance; total pause time; Asynchronous transfer mode; Clocks; Communication system control; Delay estimation; Multicast communication; Multimedia systems; Streaming media; Synchronization; System performance; Timing;
Conference_Titel :
Global Telecommunications Conference, 1997. GLOBECOM '97., IEEE
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-7803-4198-8
DOI :
10.1109/GLOCOM.1997.638431
