视频服务器

介绍了一种基于资源管理的视频服务器自适应QoS控制中间件，提出了软资源预留机制，提高了服务器资源管理的可靠性和准确性。

An adaptive video server QoS-aware resource management middleware is proposed in this paper . The soft resource reservation mechanism is introduced , which improves the reliability and accuracy of the resource management .

本文在详细分析并行视频服务器系统结构和综合数据节点可靠性实现方案的基础上，实现了一个复制控制节点集群的VOD系统原型和视频点播应用系统。

Based on analyzing in details the structure of parallel video server system and synthesizing the methods , which can improve data node reliability , the article brings about a VOD system prototype and a VOD application system .

介绍了视频服务器的组成及常见的图像压缩标准，通过深入研究H.263视频压缩算法，提出了基于视频监控应用的三点改进。

In this paper , the prevailing image compression criteria are introduced . Through analyzing the H.263 algorithm , the three improvements are presented .

该嵌入式视频服务器的主要特点是支持四路音视频压缩编码，带有IDE接口硬盘存储功能，客户端远程登陆查看实时流和查询回放历史视频文件。

The primary character of the video server is four channels video / audio encoding supported , with the IDE local storage , clients can log in the video server to view the real time video stream or the history video storing file .

视频服务器采用多网卡设计，分别处理来自客户端和视频终端的连接，进而实现视频数据的转发。

It possesses several network cards to process the connections from client side to video terminal .

设计了负载均衡和冗余节目分配算法，使点播事务分散在各成员视频服务器上，并且在一台服务器出现故障时，其承载的事务能够均匀迁移到其它服务器上。

Load balancing and redundancy programs allocation algorithm are designed so that all transactions are scattered on the member video server , and a server fails , its carried transactions can evenly move to other servers .

目前视频服务器的主要性能瓶颈在于资源磁盘的带宽，尤其是在多线程环境下，使用主流操作系统的磁盘I/O将导致磁盘带宽大大下降，严重制约服务器的性能。

At present , the bandwidth of resource hard disks is the main bottleneck for video servers , because , especially in a concurrent environment , simultaneous access to a hard disk will lead the disk bandwidth to a serious decline to severely restrict the capacity of video servers .

在NT平台上利用视频点播服务器软件，将视频节目源转换成基于广域网传输的流文件格式，客户端利用专门的播放器，可以实现视频节目的实时点播。

Client can realize VoD of video program with Windows media player by using Netshow server software on Windows NT platform . Video program can be transformed into Active Stream Format ( ASF ) based on the WAN transmission standard .

结合视频网络服务器，实现了对机械臂的实时监控操作。

It is convenience to real - time observe tele - operation combined with video network server .

视频监控服务器是整个网络视频监控系统的核心单元，具有管理前端监控终端、响应用户请求和本地视频显示的功能。

Video surveillance server is the core unit of the whole network video surveillance system which is used to manage front-end monitoring terminals , to response to users ' request , and to display local video .

基于性能模型和实时负荷估计方法，本文提出视频点播服务器的服务质量控制框架，提供系统负荷监控、准入控制和区分服务等三种服务质量控制。

Based on the performance model , this paper introduces control framework to Quality of Service guarantees of VoD servers . We address three forms of performance guarantees including load control , admission control and service differentiation .