摘要
针对传统视频教学系统成本较高、不能实时交互,设计一种基于流媒体技术的视频直播教学系统,系统采用USB摄像头和普通计算机做硬件平台,采用DirectShow技术对数据进行采集、回放,采用Mpeg-4进行视频压缩编码、解码,并采用RTP/RTCP传输控制协议进行组播传输音视频直播数据。结果表明,本系统进行视频直播教学图像清晰、交互性好,易于普及,能够满足网上直播教学。
For the high cost of traditional video teaching system,not real-time interaction,the paper designs live broadcast teaching system based on IP multicast transmission.The system only uses USB camera and general as computer hardware platform.System software is designed with DirectShow technology for data acquisition,playback,using Mpeg-4 video compression encoding,decoding,and using RTP / RTCP transmission control protocol for multicast live audio and video data.Experimental results show that the teaching of this software to broadcast live video image is clear,interactive,easy to spread,to meet the live broadcast teaching.
出处
《计算机与现代化》
2010年第12期98-101,共4页
Computer and Modernization
基金
河南省科技厅国际合作项目(09430010027)
