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Video storage and retrieval method

A video storage and video technology, applied in digital data information retrieval, still image data retrieval, television and other directions, can solve the problem of incomparable computing power, and achieve the effect of improving efficiency, reducing I/O operations, and reducing delay.

Inactive Publication Date: 2019-07-05
NANJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the computing power of embedded servers is far less than that of traditional servers, so it has great limitations.

Method used

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Embodiment Construction

[0036] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0037] Such as Figure 1-2 Shown, a kind of video storage method, described storage method comprises the steps:

[0038] Obtain a video stream, and convert the video stream into an H264 naked stream;

[0039] identifying keyframes in said H264 bare stream;

[0040] calculating the frame number of the key frame and the absolute offset of the key frame from the initial position;

[0041] Establishing a key frame index queue according to the frame number and absolute offset of the key frame;

[0042] Write the key frame index queue into the save file.

[0043] In this embodiment, the video storage method includes: using the ffmepg library to convert the video stream into an H264 naked stream.

[0044] The identification method of described key f...

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PUM

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Abstract

The invention discloses a video storage and retrieval method, and the method comprises the following steps: obtaining a video stream, and converting the video stream into an H264 bare stream; identifying a key frame in the H264 bare stream; calculating the frame number of the key frame and the absolute deviation between the key frame and the initial position; establishing a key frame index queue according to the frame number of the key frame and the absolute offset; writing the key frame index queue into a storage file; the efficiency of video positioning, fast forward and slow backward is greatly improved, and the delay of dragging the video progress bar is reduced.

Description

technical field [0001] The invention relates to a video storage and retrieval method, belonging to the technical field of video monitoring and security. Background technique [0002] In recent years, with the rapid development of IP network, the video surveillance industry has also entered the era of full network. Among them, the embedded remote monitoring system adopts the client / server mode. By simplifying the TCP / IP protocol stack, the embedded WEB server (EWS) function is realized, and EWS is installed in the device, so that the embedded device can be interconnected through the Internet, and at the same time, it can provide a network management page, so that users can use a standard web browser Online remote access, control and management of numerous devices minimize time and distance constraints. The function of embedded streaming media server is realized through streaming media protocol stacks such as RTSP and RTP / RTCP. The streaming media server collects, caches, s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/92H04N5/76H04N5/93H04N21/845H04N7/18G06F16/583G06F16/51
CPCH04N5/76H04N5/92H04N5/93H04N7/18H04N21/8455H04N21/8456
Inventor 桂冠刘凡范山岗顾浩洪盛赵东旭周子琦
Owner NANJING UNIV OF POSTS & TELECOMM
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