Multimedia file extraction method
A technology of multimedia file and extraction method, applied in the field of multimedia file extraction, can solve the problem of lack of data, etc., and achieve the effect of high reliability
Active Publication Date: 2018-05-01
成都德尚视云科技有限公司
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Problems solved by technology
[0003] The present invention provides a multimedia file extraction method to solve the problem that there is no general file extraction method in the prior art to extract data in the memory of monitoring equipment from different manufacturers
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[0030] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with embodiments and drawings.
[0031] Such as figure 1 As shown, a multimedia file extraction method includes:
[0032] Step 1: Analyze the file system format of each partition in the storage. If the file system format of each partition in the storage is analyzed, go to step 3, otherwise go to step 2;
[0033] Step 2: Analyze the file format of each data block in the storage. If the file format of each data block in the storage is analyzed, go to step 4;
[0034] Step 3: According to the file system format of each partition in the storage, extract each data block from the storage to reconstruct the media file, and then go to step 5;
[0035] Step 4: According to the file format of each data block in the storage, extract each data block from the storage to reconstruct the media file, and then go to s...
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The invention discloses a multimedia file extraction method. According to the method, first, file system formats of all partitions in a memory are analyzed; if the file system formats can be analyzedout, all data block reconstruction media files are extracted from the memory according to the file system formats of all the partitions in the memory; and otherwise, file formats of all data blocks inthe memory are analyzed, and then all the data block reconstruction media files are extracted from the memory according to the file formats of all the data blocks in the memory. Through the method, file extraction can be performed according to the file system formats and the file formats without the limitation of all monitoring equipment manufacturer formats in the security and protection field,and the method can be applied to media file extraction of various monitoring equipment in the security and protection field; meanwhile, a data reconstitution mode is adopted to perform file extraction, so that the method is not prone to be influenced by storage conditions and high in reliability; and furthermore, a plug-in mode is adopted, therefore, supportable file formats or file system formatscan be easily added pertinently, and no influence can be imposed on an original system structure.
Description
Technical field [0001] The invention relates to data extraction technology, in particular to a multimedia file extraction method. Background technique [0002] In the field of security monitoring, there are many storage devices, and each monitoring device manufacturer has designed its own data storage format, which makes it impossible to use a unified method or tool to read the video data on each hard disk. Because the hard disk data storage formats of hard disk video recorders / network video recorders and other monitoring equipment produced by various monitoring equipment manufacturers are different, to extract the data stored in these hard disks, it is necessary to use each manufacturer’s own product tool instead of a universal The file extraction method is extremely inconvenient to extract the hard disk data on the monitoring equipment of different manufacturers. Summary of the invention [0003] The invention provides a multimedia file extraction method to solve the problem th...
Claims
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IPC IPC(8): G06F17/30
CPCG06F16/122
Inventor 代丹胡轫浩刘松黄德军张尚柱
Owner 成都德尚视云科技有限公司