Video playback control method, device and system

Abstract

The present invention discloses a method, a device, and a system for controlling video play, where the method includes: separately pushing, by a video surveillance platform, one or more video streams of a same time period to multiple clients in an observation group; receiving receiving speeds at which the clients receive the one or more video streams, and a cache value or cache values of the one or more video streams, where the receiving speeds and the cache value or the cache values of the one or more video streams are sent by the multiple clients to a video play control unit of the video surveillance platform regularly; adjusting, by the video play control unit of the video surveillance platform, a pushing speed or pushing speeds of the one or more video streams according to the received receiving speeds of the clients and the received cache value or cache values of the one or more video streams; and pushing, by the video surveillance platform according to an adjusted pushing speed or adjusted pushing speeds, the one or more video streams to the clients for the clients to play. By using the foregoing method, the present invention can realize that video information of a crime scene from multiple cameras can be synchronously played and collaboratively accessed and watched on multiple clients. Key information of a case can be quickly learned by means of synchronous playback of multiple videos, thereby improving case-solving efficiency.

Description

technical field [0001] Embodiments of the present invention relate to the field of video monitoring services, and in particular to a method, device and system for controlling video playback. Background technique [0002] In recent years, in order to improve public safety, video surveillance systems are usually deployed to monitor and record public areas. For some important places, such as airports, banks, intersections, etc., multiple front-end devices (usually cameras) will be set up from multiple directions to monitor the same place from multiple angles to further improve security. When an abnormal situation occurs, public security criminal investigators or other security personnel often need to perform synchronous playback and observation and analysis of multiple video recordings in order to grasp the key information of a certain time period of the crime scene, so as to provide more valuable clues for dealing with abnormal situations. [0003] In the prior art, multiple ...

AI Technical Summary

Problems solved by technology

The inventors found that this method has the following disadvantages: (1) The more windows are divided into the interface of the display, the smaller the picture in each window is, and even the details of the picture cannot be recognized, which affects the accuracy of observation and analysis; (2) due to the size of the display and resolution are limited, it is impossible to realize the coordinated operation of more personnel, and it cannot meet the needs of multi-person collaborative review (3) When the case needs to be jointly handled by multiple places, the existing scheme cannot realize multi-site and multi-person collaborative review at all video needs

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