Multimedia File Extraction Method
A multimedia file and extraction method technology, applied in the field of multimedia file extraction, can solve the problem of no data, etc., and achieve the effect of high reliability
Active Publication Date: 2021-06-04
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 with reference to the embodiments and accompanying drawings.
[0031] like figure 1 As shown, a method for extracting multimedia files includes:
[0032] Step 1: analyze the file system format of each partition in the memory, if the file system format of each partition in the memory is analyzed, go to step 3, otherwise go to step 2;
[0033] Step 2: analyze the file format of each data block in the memory, if the file format of each data block in the memory is analyzed, then enter step 4;
[0034] Step 3: According to the file system format of each partition in the memory, extract each data block from the memory to reconstruct the media file, and then enter step 5;
[0035] Step 4: According to the file format of each data block in the memory, extract each data block from the memory to reconstruct the med...
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The invention discloses a method for extracting multimedia files. Firstly, the file system format of each partition in the memory is analyzed, and if it can be analyzed, then according to the file system format of each partition in the memory, each data block is extracted from the memory to reconstruct the media file. Otherwise, analyze the file format of each data block in the memory, and then extract each data block from the memory to reconstruct the media file according to the file format of each data block in the memory. It can not only extract files according to the file system format, but also extract files according to the file format. It is not limited by the format of various monitoring equipment manufacturers in the security field, and can be applied to the media file extraction of various monitoring equipment in the security field. At the same time, the method uses data reorganization to extract files, which is not easily affected by storage conditions and has high reliability. Furthermore, the method adopts a plug-in method, which can easily add supported file formats or file system formats in a targeted manner without affecting the 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 kinds of 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. Due to the different storage formats of hard disk data on monitoring equipment such as hard disk video recorders / network video recorders produced by various monitoring equipment manufacturers, to extract the data stored in these hard disks, it is necessary to use their own product tools, and there is no universal product tool. It 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 that the...
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IPC IPC(8): G06F16/11
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