DVR多码流技术
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摘要
多码流的意义在于"为系统中不同用户、不同的应用提供不同码流的视频",解决了"众口难调"的问题。在互联网的DVR系统中,尤其是有多用户、跨网络及集中存储需求的情况下,如果DVR的每个通道只能产生一个单一码流,那么,不论是实时视频浏览还是存储备份、不论是远程视频浏览还是本地浏览、无论PC工作站还是PDA终端,都必须无条件地接受这一个码流,不管它实时还是非实时,也不管它是高分辨率还是低分辨率。同理,多码流技术将使每个视频通道支持同时生成多个视频码流,这些视频码流是独立配置的,可以分别为不同的分辨率、不同的帧速、不同的压缩比率或者不同的编码方式,以满足不同应用需求。
The significance of the multi stream is for the system of different users and different application provides different streams of video,to solve the problem of difficult.In the Internet of DVR system,especially multi user,across the network and centralized storage demand situation under,if the DVR each channel can only produce a single stream,so,no matter is real-time video browsing or storage and backup,whether remote video browsing or local browsing,either a PC workstation or PDA terminal must unconditionally accept the a stream,regardless of its real-time or non real time,whether it is high resolution and low resolution.Similarly,multi threading technology will enable each video channel supports the creation of multiple video stream,the video stream is independently configurable and can be divided into different resolution,different frame,different compression ratio,or the code in different ways,to meet the needs of different applications.
引文
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