A live intranet distance learning system using MPEG-4 over RTP/RTSP

被引:0
|
作者
Westerink, P [1 ]
Amini, L [1 ]
Veliah, S [1 ]
Belknap, W [1 ]
机构
[1] IBM Corp, TJ Watson Res Ctr, Hawthorne, NY 10532 USA
关键词
D O I
暂无
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
This paper describes an application where multiple live audio/visual data streams are combined in MPEG-4 and streamed via RTP/RTSP. The scenario involves the video and audio of a classroom instructor, where the overhead foils the instructor may use are sent as an additional separate data stream. The three streams are encapsulated in MPEG-4 Systems, which adds synchronization among the streams and a combined composition (positioning and sizing) into a single multimedia presentation. The MPEG-4 classroom presentation is multicast live using RTP/RTSP, which allows remote students to join the class at any time. Additionally, the live presentation is captured in an MPEG-4 file. This will allow for repeating the same class again over RTP/RTSP, or for later review via HTTP on request. The client is an MPEG-4 player written in pure Java, whereas the server is an extension of an existing IBM video server. The system has been implemented and a demonstration is given.
引用
收藏
页码:601 / 604
页数:4
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