A video overlay method, device and network hard disk video recorder

A covering device and video recording technology, applied in image communication, TV, color TV components and other directions, can solve the problems of unreasonable overall effect, occupying disk space that cannot be released, etc., and achieve the effect of reasonable covering method.

Active Publication Date: 2019-11-05
SHENZHEN INFINOVA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the embodiment of the present invention provides a video overlay method, device and network hard disk video recorder, to solve the overall effect of using the video files of each video channel to directly cover the earliest video files of the existing video overlay method Unreasonable and problems that occupy disk space and cannot be released

Method used

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  • A video overlay method, device and network hard disk video recorder
  • A video overlay method, device and network hard disk video recorder
  • A video overlay method, device and network hard disk video recorder

Examples

Experimental program
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Effect test

Embodiment 1

[0063] See figure 1 , Is a schematic flowchart of a video coverage method provided in Embodiment 1 of the present invention, which is specifically described as follows:

[0064] Step S101: When the preset coverage conditions are met, select candidate video files to be overwritten from each video channel of the target storage medium according to a preset selection rule.

[0065] The coverage condition may be: the remaining space of the target storage medium is less than the preset reserved space. In this embodiment, FreeSpace may be used to indicate the remaining space, and ReservedSpace may be used to indicate the reserved space, in units of FreeSpace and ReservedSpace Generally take GB.

[0066] The coverage condition can be expressed as: FreeSpace

[0067] The size of the ReservedSpace can be set by default by the system, or can be set by the user according to the actual situation, which is not specifically limited in this embodiment.

[0068] Unless otherwise specifi...

Embodiment 2

[0113] See Figure 4 , Is a schematic block diagram of a video overlay device provided in the second embodiment of the present invention. For ease of description, only parts related to the embodiment of the present invention are shown.

[0114] The video overlay device may be a software unit, a hardware unit, or a combination of software and hardware built into a terminal (such as an NVR, etc.), or it may be integrated into the terminal as an independent pendant.

[0115] The video covering device may include:

[0116] The selection module 401 is configured to select candidate video files to be overwritten from each video channel of the target storage medium according to the preset selection rules when the preset coverage conditions are met;

[0117] The calculation module 402 is configured to calculate the coverage weight coefficient corresponding to the candidate to-be-covered video file according to a preset calculation rule; the coverage weight coefficient is used to characterize ...

Embodiment 3

[0144] The embodiment of the present invention provides a network hard disk video recorder, which may include Figure 4 Corresponding to any one of the video covering devices described in the embodiment.

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Abstract

The invention belongs to the field of security and protection monitoring, and provides a record coverage method and device as well as network video recorder (NVR). The method comprises: selecting an alternative to-be-covered recording file from each recording channel of a target storage medium according to a preset selection rule when a preset coverage condition is met; calculating a coverage weight coefficient corresponding to the alternative to-be-covered recording file according to a preset calculation rule; sequencing the alternative to-be-covered recording file according to the calculated coverage weight coefficient, thereby obtaining a sequencing result; and covering the alternative to-be-covered recording file according to the sequencing result. By embodiments of the invention, the coverage weight coefficient corresponding to the alternative to-be-covered recording file is calculated and is taken as a sequencing standard for performing record coverage, and the alternative to-be-covered recording file is covered according to the sequencing result; each recording channel is universally considered, so that the coverage manner is more reasonable on an aspect of the integral storage medium.

Description

Technical field [0001] The invention belongs to the field of security monitoring, and in particular relates to a video covering method, device and a network video recorder (NVR). Background technique [0002] With the development of high-definition video technology and information technology in the security industry, what urgently needs to be improved is the performance of NVR services. Among them, video coverage is not only the core business of NVR, but also the basic guarantee for NVR's efficiency and stability. Video overwrite specifically refers to the need to write data on the original data again after the video data is written to the disk space. Disk space is always limited, and video recording cannot be stopped. Therefore, video coverage is repeated rewriting after the first round of blank writing. The two key factors affecting video coverage are the size of disk space and the number of video channels. [0003] Most of the video overwriting methods in the prior art are base...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/76H04N5/781
CPCH04N5/76H04N5/781
Inventor 毛金花
Owner SHENZHEN INFINOVA
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