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Video prerecording method and device

A video and pre-recording technology, applied in the field of video pre-recording methods and devices, can solve the problems of invalid pre-recording, lack of I frames in the pre-recording queue, etc.

Inactive Publication Date: 2017-01-11
ZHEJIANG DAHUA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a kind of video pre-recording method and device, to solve the pre-recording invalid problem caused by the lack of I frame in the pre-recording queue within the pre-recording time

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  • Video prerecording method and device
  • Video prerecording method and device

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Embodiment Construction

[0045] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them.

[0046] In order to solve the pre-recording invalid problem caused by the lack of I frames in the pre-recording queue during the pre-recording time of the video pre-recording, an I-frame queue can be created in advance in the embodiment of the present invention. When there is an I frame meeting the pre-recording time, video pre-recording is performed according to the I frame stored in the pre-created I frame queue.

[0047] figure 1 Shown is a flow chart of a video pre-recording implementation method provided by an embodiment of the present invention, as figure 1 shown, including:

[0048] S101: Determine that video pre-recording needs to be performe...

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PUM

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Abstract

The invention discloses a video prerecording method and device. The video prerecording method comprises the step of performing video prerecording according to an I-frame stored in a pre-established I-frame queue under the condition of determining that video prerecording is required to be performed and that a video prerecording queue does not have an I-frame conforming to the prerecording time. The video prerecording method disclosed by the invention can solve a problem of invalid prerecording caused by lack of the I-frame in the prerecording queue within the prerecording time.

Description

technical field [0001] The invention relates to the technical field of video data storage, in particular to a video pre-recording method and device. Background technique [0002] Video surveillance is an important part of the security system. The cost of social security maintenance can be effectively reduced through video surveillance. Video surveillance has been widely used in various fields. Among them, video pre-recording is an important technology in video surveillance. Through video pre-recording can achieve the purpose of monitoring. [0003] During the realization process of video pre-recording, the video frame data is stored by the video pre-recording queue, wherein, the video frame data includes three types of video frame data of I frame, P+ frame and P frame, and the video pre-recording queue adopts a circular queue The data structure stores the above three types of video frame data. When a pre-recording event occurs, according to the set pre-recording time, sear...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/76
CPCH04N5/76
Inventor 刘帝帮
Owner ZHEJIANG DAHUA TECH CO LTD