Video playback method and device

Abstract

The invention discloses a video playback method and a video playback device. The device comprises the steps of setting at least one region of interest according to at least one frame image in a video recording file; adjusting the interval according to a preset video playback rate so as to acquire to frame images, and calculating a motion intensity value of the image content of the at least one region of interest; adjusting the video playback rate of the video recording file according to the motion intensity value of the image content in the at least one region of interest, and playing the video recording file according to the video playback rate. According to the invention, in the process of playing the video recording file, participation of an encoder terminal is not required, high-efficiency video playback can be realized while ensuring users to acquire enough interested information as for any path of video code stream, and the work efficiency of video retrieval is improved.

Description

technical field [0001] The invention relates to the field of digital image processing, in particular to a video playback method and device thereof. Background technique [0002] With the popularization of video surveillance systems in all walks of life and the continuous expansion of multimedia technology applications, the use of video data post-processing technology has become more and more extensive. Among them, retrieving information of interest to users from video sequences is It is a relatively common video post-processing technology at present. [0003] Based on this, the currently commonly used retrieval method is to manually check the video playback method, but the reality is that the current video recording has shown the characteristics of mass production. Undoubtedly, adopting this solution will consume a lot of manpower and time, and has obvious low efficiency. Fatiguing problems. Therefore, it is particularly necessary to develop a technology that can efficient...

AI Technical Summary

Problems solved by technology

In the prior art, the above solution is usually realized by means of information at the encoder end. The idea is: when encoding the video stream at the encoder end, perform feature analysis at the same time, and write the feature label generated by the analysis result into the video stream. When decoding the video stream at the decoding end, these feature label information are used to control the playback rate, but this technical solution requires the participation of the encoder side. For a code that has not undergone feature analysis and extracted the corresponding feature label information As far as streaming is concerned, the playback of video recording files can only be performed in the normal mode

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