多媒体协作平台中录制系统的研究与实现  

Design and Implementation of Record System in Multimedia Collaboration Platform

作　　者：姚毅[1] 单宝松[1] 

机构地区：[1]北京航空航天大学软件开发环境国家重点实验室,北京100083

出　　处：《计算机技术与发展》2007年第9期163-166,170,共5页Computer Technology and Development

基　　金：国家科技基础条件平台项目(2004PT101067)

摘　　要：在多媒体协作平台中,录制系统将实时协作过程中的音视频数据存储下来,用户通过回放可以重温整个会话过程。文中针对录制系统数据量大、实时性高、并发访问多的特点,研究并实现了一个实时多媒体录制系统。就缓冲管理、存储策略、会话管理等关键问题进行了分析并给出了解决方案。另外,为了提高系统各节点利用率和自适应性,提出了基于预测和负载反馈的动态负载平衡机制以及录制任务迁移策略。In the multimedia collaboration platform, the record system stores the real video and audio data of the collaboration process,thus users can playback and review the whole recorded session later. This paper analyzed the difficulties of the record techniques： vast number of data, concurrence, real - time requirement, and proposed and implemented a desktop environment- faced record system based on RTP protocol. Furthermore, the paper discussed some key issues in the implementation of record system：buffer management, storage policy, session rnanagement, ete and presented related solutions meanwhile. Besides, to improve the scalability and maximize the utility of nodes in the system, proposed a dynamic load balancing mechanism based on both load information and storage prediction and record task immigration scheme.

关 键 词：协作平台 录制系统 数据存储与组织 动态负载平衡 

分 类 号：TN919.8[电子电信—通信与信息系统]