视频监控存储系统的设计与实现
发布时间：2018-09-16 19:54
【摘要】：针对文件系统存储视频数据时存储效率低和检索性能差的问题,提出一种基于裸盘设备的视频数据专用存储方案,实现了视频数据的高效存储和秒级检索。针对多路视频流的并发写入控制,采用单线程非阻塞I/O复用技术和"乒乓缓冲"机制,避免多路视频流并发写入时的阻塞问题;针对视频监控系统媒体转发服务器的时钟漂移问题,采用基于两级索引的回馈定位技术,提高系统对服务器钟差的容错能力。系统测试结果表明,相对于文件存储,"时间索引+数据块"存储方式的视频检索效率不受数据规模大小影响,多路并发写入时,单线程非阻塞I/O复用和"乒乓缓冲"机制能有效避免阻塞现象的发生。
[Abstract]:Aiming at the problems of low storage efficiency and poor retrieval performance when video data is stored in file system, a special storage scheme for video data based on bare disk device is proposed, which realizes efficient storage and second-level retrieval of video data. The mechanism avoids the blocking problem when multi-channel video stream is written concurrently. Aiming at the clock drift problem of media forwarding server in video surveillance system, the feedback location technology based on two-level index is adopted to improve the fault tolerance of the system to server clock error. The efficiency of video retrieval is not affected by the size of data. Single thread non-blocking I/O multiplexing and "ping-pong buffering" mechanism can effectively avoid blocking when writing in parallel.
【作者单位】： 中国航天科工集团第二研究院七0六所;
【分类号】：TP333
，
本文编号：2244619
[Abstract]:Aiming at the problems of low storage efficiency and poor retrieval performance when video data is stored in file system, a special storage scheme for video data based on bare disk device is proposed, which realizes efficient storage and second-level retrieval of video data. The mechanism avoids the blocking problem when multi-channel video stream is written concurrently. Aiming at the clock drift problem of media forwarding server in video surveillance system, the feedback location technology based on two-level index is adopted to improve the fault tolerance of the system to server clock error. The efficiency of video retrieval is not affected by the size of data. Single thread non-blocking I/O multiplexing and "ping-pong buffering" mechanism can effectively avoid blocking when writing in parallel.
【作者单位】： 中国航天科工集团第二研究院七0六所;
【分类号】：TP333
，
本文编号：2244619
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