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Recovery method and system for MP4 file

A recovery method and recovery system technology, applied to the generation of response errors, error detection of redundant data in calculations, instruments, etc., can solve the problem of unsatisfactory restored video effects, discontinuous physical storage locations, and poor recovery effects and other issues to achieve the effect of improving recovery, significant innovation and practical significance, and ensuring completeness

Active Publication Date: 2020-02-28
XIAMEN MEIYA PICO INFORMATION
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Problems solved by technology

[0007] In order to solve the technical problems such as the poor recovery effect of the MP4 file recovery scheme in the prior art, the present invention proposes a recovery method and system for MP4 files to solve the video effect caused by discontinuous physical storage locations and the like. suboptimal problem

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  • Recovery method and system for MP4 file
  • Recovery method and system for MP4 file
  • Recovery method and system for MP4 file

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Embodiment Construction

[0042] The application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain related inventions, rather than to limit the invention. It should also be noted that, for the convenience of description, only the parts related to the related invention are shown in the drawings.

[0043] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and embodiments.

[0044] figure 1 An exemplary system architecture 100 to which the method for restoring MP4 files according to the embodiment of the present application can be applied is shown.

[0045] Such as figure 1 As shown, the system architecture 100 may include a data server 101 , ...

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Abstract

The invention provides a method and system for an MP4 file, and the method comprises the steps: obtaining a cluster size CL allocated and used by a system, reading to-be-recovered MP4 file data, and extracting a moov feature code of the to-be-recovered MP4 file data; in response to the extracted moov feature code, obtaining offset information of all Chunks in the moov feature code; calculating theserial number of the cluster to which each Chunk belongs and the initial offset position of each Chunk in the cluster to which the Chunk belongs; in response to the fact that the Chunk number in thecurrent cluster is larger than or equal to a first threshold value and complete Chunk analysis is achieved based on the offset position in the cluster, the current cluster serving as a target cluster;and storing the target cluster and the cluster where the moov feature code is located as an MP4 file. According to the method, under the condition that the data is not completely covered, the video data can be completely recovered, the completeness of the file is ensured, and the channels are recovered and separated according to the file.

Description

technical field [0001] The invention relates to the field of computer data recovery, in particular to a recovery method and system for MP4 files. Background technique [0002] MP4 is a multimedia file format using MPEG-4. It organizes files in a "container" manner and can store digital audio and video information. With the development and popularization of smartphones and video recording devices, people's demand for video is increasing. In this regard, MP4 format video occupies an important part. Unexpected situations in daily use, such as equipment failure, file system damage, artificial deletion, etc., often lead to file loss. [0003] There are several existing software at home and abroad that can recover MP4 video files. For the lost MP4 video files, these softwares mainly adopt the following schemes: search for MP4 container feature information (such as ftyp, mdat, moov, etc.), and extract and save the data according to the length information of the container or the ...

Claims

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Application Information

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IPC IPC(8): G06F11/14
CPCG06F11/1438G06F11/1435
Inventor 林文化沈长达吴少华
Owner XIAMEN MEIYA PICO INFORMATION
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