Multi-path audio/video stream storage method for preventing disk fragments from formation

Abstract

The present invention discloses a multi-path audio / video stream storage method for preventing disk fragments from formation. The multi-path audio / video stream storage method comprises the following main steps of: (1) establishing data files for storing audio / video streams; (2) distributing data files stored by the plurality of the audio / video streams, namely respectively setting a storage space needed by each path of the audio / video stream, automatically distributing the data files with the corresponding quantity according to the storage space needed by each path of the audio / video stream, and respectively establishing a data file index database table corresponding to each path of the audio / video stream and inserting the data file index database table into a record of the data file distributed by the data file index database table; and (3) storing the plurality of paths of audio / video streams, namely independently storing each path of audio / video stream by combining a database and updating a database record corresponding to the audio / video stream according to the requirements. The multi-path audio / video stream storage method for preventing the disk fragments from formation has the advantages that the disk fragments are not formed; the storage efficiency of the audio / video streams is not reduced along the increasing of time, and total recording time of each path of audio / video stream is accurately controlled; and a disk space occupied by the data file of each path of audio / video stream is continuous so that the accessing efficiency of the audio / video stream files is improved.

Description

technical field [0001] The invention relates to the technical field of storage, in particular to a multi-channel audio and video stream storage method that prevents disk fragmentation. Background technique [0002] Traditional hard disk video recorders and network hard disk video recorders need real-time audio and video storage to work: create a file when a certain channel starts recording, fill the data of the audio and video stream into the file, and when the specified time is up (such as 5 minutes), End the filling of the file, then create a new file, continue to fill the data of the audio and video stream into the new file, and so on. After continuous file operations such as creating, deleting, and writing, the disk will be fragmented, which will affect the performance of the system and the life of the disk. [0003] Chinese patent 200510050829.3 discloses a file management method of a hard disk video recorder to prevent file fragmentation, and proposes a file managemen...

AI Technical Summary

Problems solved by technology

Therefore, when the storage parameters such as the data stream size and storage time of each audio and video stream are different, it is impossible to accurately control the total recording time of each audio and video data stream

[0004] Chinese patent 201210495293.6 proposes a method for reducing disk fragmentation. When the NVR is used for the first time, a certain number of files are pre-allocated on the disk, and the information of these files is written into the database. When video recording is required, the currently available files are queried from the database, and then Write data to the file, and maintain the integrity and consistency of the data through the database record of the camera information corresponding to the file name in the video file, without modifying the file information in the FAT table, but this method does not involve multi-channel audio Storage and management of video streams

Therefore, in the case of multiple audio and video streams, the time required for the invention to frequently operate the database becomes non-negligible, which easily causes avoidable frame loss during the storage process, database update delay or failure, etc. unpredictable situation

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