Multi-path video data read-write method

A data read and write, multi-channel video technology, applied in the video field, can solve the problems affecting the disk read and write efficiency, and achieve the effect of improving the read and write efficiency, reducing the jump frequency, and ensuring the use efficiency.

Inactive Publication Date: 2011-09-21
北京互信互通信息技术有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, when writing multiple channels of video data, each channel of video corresponds to a video file. When writing, the head of the disk will need to continuously jump to different video file disk storage locations for writing operations, thus affecting the overall disk. Read and write efficiency

Method used

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Embodiment Construction

[0024] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

[0025] figure 1 It is a flow chart of multi-channel video data reading and writing in the specific implementation manner of the present invention. Such as figure 1 As shown, the multi-channel video data read and write process includes the following steps:

[0026] Step 101. Acquire multiple channels of video data from multiple cameras.

[0027] Step 102, the video frame data of the video data of all the cameras is written in a video file in the memory in a combined write mode, a section of video frame data of a camera is a data block, and the video data of each camera generates a video head respectively document.

[0028] In this process, the video frame data of all the video data of the camera is written into the cache in the form of data blocks, and after the cache is full, it is written into ...

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Abstract

The invention discloses a multi-path video data read-write method, which comprises the following steps of: acquiring video data from a plurality of cameras, and writing video frame data of the video data of all the cameras into a video file of a storage in a merged writing mode; establishing a data block index file and a camera recording index file for the video file, finding positions of all data blocks of a specified camera in the data block index file within search time through the camera recording index file, acquiring index records of all the data blocks of the specified camera within the search time from the data block index file, and acquiring all the data blocks of the specified camera within the search time from the video file; and merging according to starting time and ending time. Due to the adoption of the technical scheme, jump frequency of a magnetic disc head can be greatly reduced, and the whole read-write efficiency of a disc is improved.

Description

technical field [0001] The invention relates to the field of video technology, in particular to a method for reading and writing multi-channel video data. Background technique [0002] Writing multiple channels of video data on the same disk usually uses multiple video files for each channel to write independently. In this way, when writing multiple channels of video data, each channel of video corresponds to a video file. When writing, the head of the disk will need to continuously jump to different video file disk storage locations for writing operations, thus affecting the overall disk. Read and write efficiency. Contents of the invention [0003] The purpose of the present invention is to propose a method for reading and writing multi-channel video data, which can greatly reduce the jumping frequency of the disk head and improve the overall read and write efficiency of the disk. [0004] For reaching this purpose, the present invention adopts following technical sche...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30G06F3/06
Inventor 曾波施玉峰
Owner 北京互信互通信息技术有限公司
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