Double-index video circulating memory and quick retrieval method
A circular storage and double indexing technology, applied in video data retrieval, metadata video data retrieval, special data processing applications, etc., to achieve the effect of reducing retrieval time
Inactive Publication Date: 2015-02-18
CHENGDU YIMENG HENGXIN TECH
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[0006] The purpose of the present invention is to overcome the deficiencies in the prior art, integrate various storage and retrieval problems, and propose a double-indexed video loop storage and fast retrieval method, which can easily locate the required video storage time point on, for users to use for quick retrieval
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[0024] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.
[0025] Such as figure 1 Shown, a kind of double-indexed video circulation storage and the method for fast retrieval, it comprises video image storage step and fast retrieval step;
[0026] Described video image storage comprises the following substeps:
[0027] S101, obtain a frame of video data that needs to be preserved, judge whether it is I frame data, if yes, then carry out step S102, if not then end operation;
[0028] S102, storing video data;
[0029] S103, check whether the space of the current storage path is sufficient, if yes, then create a file, judge whether to store in the current path or another path according to the current storage path, and create video files and video index files at the same time, if not, then delete th...
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The invention discloses a double-index video circulating memory and quick retrieval method. The double-index video circulating memory and quick retrieval method comprises a video image storage method and a quick retrieval method, wherein the video image storage method comprises the following steps: judging whether the video data to be stored are I-frame data, conducting storage of the video data, checking the current storage path volume, meanwhile creating a video file and a video index file, and conducting multipath disk management to add the file path indexes to a database; the quick retrieval method comprises the following steps: calculating the name of the video file according to time through the database indexes, directly retrieving the storage position of the files in the database, accurately locating the deviation position of specific point in time in the files according to the file indexes, and directly obtaining the video data from the time point to play. The double-index video circulating memory and quick retrieval method disclosed by the invention has the benefits that the video is stored and retrieved through the double indexes to greatly shorten the retrieval time, increase the storage reliability and reduce the clip files.
Description
technical field [0001] The invention relates to image storage technology in the field of computers, in particular to a double-indexed video cycle storage and fast retrieval method. Background technique [0002] There are generally two types of image storage in the prior art, one is to store video files in a fixed size mode, and the other is to store video files in a fixed time mode. [0003] Traditional video storage is stored according to a fixed size. Generally, files are divided into small files for storage, which will generate a huge number of files. It will take a long time to perform index retrieval through the database during retrieval, especially on embedded devices. [0004] If it is stored according to a fixed time, the amount of data in the database is small, but it will take a long time to locate the specific time point of the file. [0005] The storage and retrieval methods of these two methods all have slow retrieval when the video recording time is long, esp...
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IPC IPC(8): G06F17/30
CPCG06F16/13G06F16/78
Inventor 王春波黄均
Owner CHENGDU YIMENG HENGXIN TECH