Multi-screen video synchronous playing method and device

Abstract

The invention discloses a multi-screen video synchronous playing method and device. The method comprises the steps that an ultrahigh-resolution-ratio video source is divided into small equant videos to be placed on different node computers, video data are converted into YUV image sequences, and the same number is used for identifying the same frame of sequences of all the small videos; a YUV file is generated from the YUV image sequences; a main control computer sends instructions to all the node computers to enable all the node computers to play the videos at the same moment; a camera starts to synchronously shoot a whole video picture and analyze the numbers of frames; when the frames with different numbers exist, the main control computer sends instructions to the node computer with the different frames to correct the serial numbers of the frames needing to be played, and the image sequences of the frames needing to be played are extracted from the node computer so as to achieve the purpose that the numbers of all the frames of the same picture are uniform. According to the multi-screen video synchronous playing method and device, manual video synchronization pre-adjustment is not needed, synchronous video playing is made to be intelligent, the speed at which the frames are played is stable, when the frames are asynchronous, the corresponding frames can be selected quickly to be played, and the trouble of video suspending and replaying is saved.

Description

technical field [0001] The present invention relates to the field of video processing, and more specifically, to a multi-screen video synchronous playback method and device. Background technique [0002] 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. [0003] There are two main traditional methods: [0004] 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 not o...

AI Technical Summary

Problems solved by technology

[0006] 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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