采用DM642平台设计MPEG-4视频流传输系统  

Design of MPEG-4 Video Stream System Based on DM642

作　　者：汪国有[1] 赵蓝兰[2] 

机构地区：[1]华中科技大学图像信息处理与智能控制教育部重点实验室,湖北武汉430074 [2]华中科技大学图像识别与人工智能研究所,湖北武汉430074

出　　处：《电视技术》2005年第9期40-43,共4页Video Engineering

摘　　要：介绍了在DM642平台上实现监控系统中视频流子系统的设计方案和关键技术,提出了基于B/S架构的传输系统的设计方法,可为用户提供远程访问。该系统采用流媒体协议对MPEG-4数据进行流化和传输,具有较好的传输质量和监控效果;且支持RTSP协议远程点播功能,提高了用户与服务器的交互性。实验结果表明,该设计方法较大地提高了系统的可扩展性和开发的质量,有较强的实用性。In this paper, a video stream module of the monitor system over DM642 is implemented. The design plan and key techniques for the implementation are discussed. In addition, the implementation of the framework, structured in the form of B/S, of the video stream system improves convenience for clients＇ remote access. MPEG-4 data are streamed and transmitted by the stream protocols, which make the quality of transmission and monitor video good, RTSP is also implemented for improving the interaction between clients and the server. The experiment results imply that this design plan will greatly enhance the availability and expansibility of the video stream system.

关 键 词：实时传输协议 会话描述协议 浏览器/服务器 MPEG-4标准 实时流协议 DM642处理器 

分 类 号：TN919.8[电子电信—通信与信息系统]