Method for compressing monitoring video file

Abstract

The invention discloses a method for compressing a monitoring file. The method includes the following steps: inquiring the video file earliest in recording time, analyzing the video file, recognizing static frames and dynamic frames in the video file, recording and tagging the dynamic frames, reserving ones of the same static frames, canceling others of the same static frames and P frames between the static frames, recording the number of copies of I frames in the current static frames, the number of the P frames between the I frames and timestamps of the frames to be tagging information, and regenerating a video file through the generated static frames, the generated dynamic frames and the generated tagging information. Monitoring video data are processed with the scheme, hard-disk space occupied by the video file is effectively reduced, the completeness and the high quality of the monitoring video file are guaranteed, convenience is brought to user calling, and the cost for purchasing a hard disk by a user is reduced.

Description

technical field [0001] The invention relates to a video file processing method, in particular to a monitoring video file compression method. Background technique [0002] The network video recorder is mainly used to store the audio and video data of the front-end network camera or DVS. How long the audio and video data can be stored is also an important factor to measure whether the network video recorder is powerful. Most network video recorders record 7*24 hours, and now the video surveillance system is developing in the direction of high-definition, intelligent and networked. There are endless 3 million and 5 million pixel network cameras on the market, and the video data is getting more and more bigger. Although the capacity of the hard disk is getting larger and larger at present, the space is still tight in the face of huge video data. How to keep video data as long as possible is also a challenge faced by many manufacturers. [0003] Currently, network video record...

AI Technical Summary

Problems solved by technology

Due to the large amount of video data, a single hard disk can save very few videos, and the cost of surveillance-level hard disks is high. When it is necessary to retain a long period of video, a large number of hard disks are required, which increases the cost of use for users.

The cyclic writing method will delete the earliest recording. When it is necessary to query the recording of an earlier time, the query will fail because the data has been deleted, which will bring inconvenience to the user.

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