AVS视频服务器系统设计与实现.docVIP

  AVS 视频服务器系统设计与实现 王雷1，张刚1，张琰2** （1. 太原理工大学信息工程学院，太原 030024； 5 10 15 20 25 30 35 40 2. 山西生物应用职业技术学院，太原 030031） 摘要：AVS 标准是中国数字音视频编解码技术标准工作组制定的具有自主知识产权的数字 音视频编码标准，性能高于 MPEG2 标准与 H.264 标准相当。本文完成 AVS 算法在 TMS320DM6446 硬件平台的移植，并考虑硬件平台的结构特点，使用汇编、Cache、VICP 和 DMA 等优化手段对编码器进行优化，最后完成 D1 分辨率 AVS 编码在嵌入式平台实时实 现，并在此基础上设计研发出整个视频监控系统。基于 TMS20DM6446 构建视频服务器， 用 AVS 标准做视频压缩，用 SIP 做访问控制协议，RTP/RTSP 做传输协议；完成具有完整 实时编码、录像存储、实时监控、远程控制等功能的网络音视频监控系统，具有低成本、高 编码效率、广域网运行、低延迟、实时性强等特点。支持 Windows 平台 PC 客户端，Linux 平台 PC 客户端，便携式客户端。视频服务器完善了 AVS 的产品，对 AVS 的发展起到了积 极的推动作用，加快 AVS 产业化发展。 关键词：AVS；Encoder；DSP；SIP；视频监控； 中图分类号：TN919.82 AVS Vedio Server System Design and Implementation Wang Lei1, Zhang Gang2, Zhang Yan3 (1. College of Information Engineering, Tai Yuan University of technology, Tai Yuan 030024; 2. College of Information Engineering,Tai Yuan University of Technology,Tai Yuan 030024; 3. Biological application of Shanxi Vocational and Technical College) Abstract: AVS is Chinese audio and video coding standard with independent intellectual property right. The performance of AVS is similar to H.264 and higher than MPEG2.AVS algorithm is transplanted based on TMS320DM6446 platform in this paper. Considering the structural characteristics of the hardware platform, using Asm, cache, VICP and DMA. AVS real-time encoding for D1 resolution is implemented based on TMS320DM6446 platform. The whole video monitoring system is developed on this basis. This design constructs the video servers based on TMS320DM6446.The video servers system can implement real-time coding, video storage, real-time supervision and remote control, which uses AVS as video encoded standard, SIP as access control protocol and RTP/RTSP as transport protocol. The system has the advantages of low cost, high coding efficiency, low delay time and real time. The communication system can run in wide area network. It supports the Windows platform PC client, the Linux platform PC client, portable client. Video server perfected the AVS produ