视频服务器

Firstly, the thesis introduced the development of VOD, the background and meaning of the program, then the author introduced the associated technology, mainly including the feature of multimedia, video compression technology and the protocols SCTP and RTP. Considering the ambulant of host , fluctuation of bandwidth,high error rate data in wireless networks ,the author proposed some QoS strategy in the wireless networks such as RTP/SCTP protocol stack , connection control of the server, two buffers in the client end point.,TFC congestion control algorithms ,etc. Based these strategies, the team members gives the software and hardware solution of the wireless video-on-demand system and gives the main modules design of the software system. The system adopted the C/S structure including two parts: server and client ,using the Mpeg-2 which is apporiate for networks as the supported format. The thesis emphatically researches on the video-serving module of the server and the sink module, player module of client.

本文首先介绍了视频点播系统的发展现状、课题的研究背景和意义；接着对课题的相关技术进行概述主要包括了多媒体特点，压缩技术，传输协议SCTP以及RTP；针对无线环境的节点移动性，带宽波动性，数据错误率高等三大特点，作者研究设计了无线环境下的QoS策略：RTP/SCTP协议栈，服务器准入控制机制，客户端双缓冲区，TFRC拥塞控制机制等；在这些策略的基础上设计了系统的软硬件解决方案，并对软件体系结构的主要模块进行了设计，整个视频点播系统采用C/S结构，由服务器，客户端2个部分组成，使用适合网络传输的流媒体格式Mpeg-2作为系统支持的格式，文中重点研究了服务器的视频服务模块以及客户端的接收模块和播放器模块，并利用线程池技术对系统进行实现。

We take Browser/Server as the mode of general framework of VMS application software, the embedded breadboard is the server end and PC is the client end of the VMS.

视频监控系统的应用软件总体架构采用浏览器/服务器（Browser/Server）模式，即嵌入式实验板做为视频监控系统的服务器端，PC机作为客户端。

Old presiding judge says, work of movie and TV of download of Internet bar proper motion is subjective fault is apparent, and offer a netizen through video company server online watch, whether did if the Internet bar is indemonstrable,its pass accredit to all arrive to examine obligation to experience case work, also cannot avoid with the assurance of video company duty.

陈庭长说，网吧自行下载影视作品主观过错明显，而通过视频公司服务器供网民在线观看的，假如网吧不能证实其对涉案作品是否经过授权尽到了审查义务，也不能以视频公司的保证就免责。

Aiming at the problem that the payloads of local servers are tempestuously fluctuating along with the movement of amount of on-line user in the video grid of multilevel architecture because the absence of temporary servers,the video grid of mixed architecture based on the video grid of multilevel architecture and the peer-to-peer technology is produced to transmit video stream data between the normal clients directly.

针对可扩展视频网格结构中，由于加盟服务器数量不足所引起的区域服务器负载波动随在线用户数量变化过大的问题，引入P2P技术构造混合结构的视频网格，实现普通客户端之间视频流数据的直接传输。

The prosperity of media streaming technology application and video server industrialization focus all the attention of the expert.

流媒体技术应用和视频服务器产业化的美好前景聚焦了业界几乎所有的注意力。

It concretely construes the situation of Wuyi University's campus network, and comes to a conclusion of the design programming of the live video system based on the campus network. It construes the application need of the equipment, including digital video camera, digital eidt tape recorder, video non-linear edit computer, video live workstation, video promulgating server, etc.

具体分析了五邑大学校园网的网络情况，给出了基于校园网的视频直播系统的设计规划，分析了系统的设备需求，包括数字摄录机、数字编辑录放机、视频非线性编辑计算机、视频直播工作站、视频发布服务器等设备。

Video server sends a RSVP message to reserve resource for client, and the system calculates and analyses QoS parameters using control information of RTP/RTCP packets and ICMP Echo request message, and controls the transmission grade by corresponding strategy to ensure network QoS, which enhances the system reaction to network condition and stabilizes the throughput and solves the problems of data transmission and using bandwidth fairly between multicast data and other kind of data when network is congestible and unstable.

整个模型系统主要由视频服务器、路由节点和客户端构成，通过RSVP协议进行资源预留协商，并在传输过程中利用RTP/RTCP包中携带的控制信息结合ICMP Echo请求报文提取QoS参数，对其进行分析判断，采用相应策略对传输级别进行实时控制，保障了网络QoS，提高了系统对网络状况的反应速度，降低了传输速率的波动性，较好解决了网络拥塞和不稳定时数据的有效传输以及与其他数据流公平占用带宽的问题。

This paper introduces a Video on Demand system based on both CATV broadcasting channels and IP interactive network. CATV broadcasting channels are used for content transmission and IP network is used for control information transmission between Set Top Box and Headend Server.

介绍了一种利用有线数字电视广播信道和支持IP交互信道的视频点播系统，广播信道用来传输点播的节目，交互信道传输机顶盒和前端服务器的控制信息，视频点播的各种控制基于DSM-CC协议实现。

The sustainable structure, which is made from NatureFlex NVS, is used for freshly prepared sandwiches and replaces rigid polystyrene containers typically available at delis, convenience stores and other locations.

在可持续的结构，它是由视频服务器的NatureFlex提出，用于新鲜的三明治和取代僵化的聚苯乙烯容器通常可在熟食店，便利店和其他地点。

Dedicated Micros of Chantilly, Virginia, has introduced the DV-IP HD video server, which was developed specifically for security applications requiring megapixel network cameras and high-definition displays.

Dedicated Micros日前推出DV-IP HD高清视频服务器，这是专为安全应用兆像素的网络摄像头和高清晰显示器设计的。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了