Video synchronization method based on camera photographing

Abstract

The invention relates to the field of video information processing and particularly discloses a video synchronization method based on camera photographing. The method includes the steps that an ultrahigh-resolution video source is divided into equal small videos to be placed on different node computers, and the identical frames of all the small videos are marked by an identical serial number; a main control computer connected with a camera sends commands to all the node computers to enable all the node computers to start to play the videos at the same time; the camera starts to photograph the whole video frames synchronously, and whether the series numbers of all the frames are consistent is analyzed; when the serial numbers of certain frames are inconsistent, the main control end sends commands to the node computers with the frames inconsistent to modify the refresh rates of the node computers, and the refresh rates are modified continuously until the serial numbers of the frames of all the node computers reaching the identical frames are consistent. According to the method, the serial numbers of the whole frames of the videos are photographed through the camera and judged whether to be consistent or not and then judged whether to perform video synchronization processing or not, and thus manual intervention is reduced; communication can be carried out without a network, the multi-computer synchronization problems caused by network communication abnormality and network response abnormality are greatly reduced.

Description

[0001] technical field [0002] The present invention relates to the field of video information processing, and more specifically, to a camera-based video synchronization method. Background technique [0003] As the digital cinema playback system has higher and higher requirements for definition, the resolution of the output picture has far exceeded the output resolution of a computer or a display device, so it is often necessary to splice multiple devices together to create a super high How to ensure the synchronization of the images output by all devices has become a key issue. [0004] There are two main traditional methods: [0005] 1. Coordinate through the network or other communication methods to ensure that all machines draw a frame at the same time. The specific method is: there is a machine called the master in the system, which notifies all other machines to generate a certain frame of picture through the network. After all the machines are generated, they will ...

AI Technical Summary

Problems solved by technology

[0007] When solving the traditional two methods, it is necessary to use the human eye to observe whether the entire picture is synchronized, and because the frame rate of video playback is fast, it is often difficult for the human eye to distinguish whether the video picture is synchronized, even if the human eye can easily see that the continuous frames are not synchronized, it is still possible. Video synchronization can only be adjusted manually by stopping video playback, and rarely use fully intelligent methods for synchronous playback

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