可伸缩性视频转换编码算法是大型分层视频组播系统层次化代理自适应机制的核心技术。
Scalable video transcoding is the key technology of a adaptive mechanism for hierarchical agents in a large-scale layered video multicast.
通过比较三种不同的网络通信方式，阐述IP组播技术在嵌入式视频监控系统网络传输方面的优势。
The paper explains the advantages of IP multicast technology in the network transmission of embedded video monitoring system through comparing three kinds of different network communication ways.
中国教育和科研计算机网(CERNET)在全国主干节点上构建和实现了组播视频会议系统，成为全国教育网各节点的视频会议交流平台。
China Education and Research Network (CERNET) construct and realize the multicast based video conference system on CERNET backbone and make it the communication platform for CERNET nodes.
论述了组播传输技术的原理和相关的路由协议，设计了一个视频信息的采集系统，分析了实时视频信息组播传输网络。
The paper describes the principle of multicast and its route protocol, designs a system of collecting video data, and analyses a network of real time video data transmission.
简要介绍了IPTV系统中的视频编码、数字版权管理、内容分发网络、组播、机顶盒等关键技术。
So the article was emphasized on some key techniques such as Coding technique, DRM, CDN, Multicast, STB about IPTV system.
测试结果表明，本系统达到了MPEG - 4网络点播与组播的基本要求，能实时传输图像和声音，并在一定范围内达到音视频同步。
The test result shows that the system can transport MPEG-4 video and audio Unicast or Multicast and playback the video and audio sync.
测试结果表明，本系统达到了MPEG - 4网络点播与组播的基本要求，能实时传输图像和声音，并在一定范围内达到音视频同步。
The test result shows that the system can transport MPEG-4 video and audio Unicast or Multicast and playback the video and audio sync.
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