DirectShow在远程教学上的应用研究

【作者】 朱楠；

【导师】 廖建明；

【作者基本信息】 电子科技大学 ， 计算机应用技术， 2005， 硕士

【摘要】 随着计算机通信及网络技术的飞速发展,远程网络教育因其覆盖面广、为各类社会成员提供优秀教师资源共享的独特优势,将逐渐成为我国一种速度更快、传播空间更大的新型教育形式,与课堂教育、广播教育、电视教育一同构成多元化的教育手段。远程视频教育是远程教育的一个重要组成部分,它实现了师生们在网络上的视频和音频交流。本文在分析了我国目前远程视频教育的现状和实现方式后,提出了一种基于微软DirectShow 技术的纯软件的解决方案。并做了如下几方面的工作: 1. 提出了用廉价设备替代专业设备,利用软件来实现视频音频的捕获、编码和录制的总体设计方案,并在界面层和Graph Filter 层做了详细设计。2. 实现了远程视频教学的音视频实时播放,对多媒体教学文件的实时点播,运用组播技术对音视频数据的网络传输。3. 完成了在RTP 协议下MPEG4 的分包组包算法,视频点播中获取媒体文件详细信息等难点的详细设计。经实际运行和测试,方案达到了预期的设计目标。更多还原

【Abstract】 Remote education has special advantage which can spread borad and provid excellent teaching resource for most people .And further more, with the technology of computer communication and Internet develop in high speed ,it gradually became a new education form which has a faster speed and more spread room. It will compose modern education with calssroom educaition ,broadcast education and TV education together. Remote video education is a important part of remote education,it realize audio/video intercourse between teacher and student on internet. After analyzing the status in quo and realize mode of our country’s remote video education,this thesis put forward a remote video education solution base on DirectShow technology. It accomplishes the following work: 1. replacing costly professional equipment, using software to caputure,encode/decode and seize audio/video data.bringing forward total solution and designing in detail on interface layer and Filter Graph layer. 2. realizing the remote realtime play of audio/video data,the video on demand of teaching multimedia files. 3. finishing the arithmetic of detaching/compounding MPEG4 package on RTP protocol and get detailed information of media file in VOD.更多还原