Method for synchronously playing multi-computer video based on refresh rate of display card

Abstract

The invention relates to a method for synchronously playing a multi-computer video based on the refresh rate of a display card and belongs to the technical field of digital multimedia players. For improving the stability of a frame rate and synchronization effect in the process of playing the multi-computer video, the method provided by the invention comprises a step of presetting the display card and a step of synchronous playing of a node computer and control of the frame rate, wherein in the step of presetting the display card, a main control computer and the node computer set a refresh frequency of the display card according to the frame rate required by playing and simultaneously start a vertical synchronization function of the display card; and in the step of synchronous playing of the node computer and control of the frame rate, the node computer extracts video data from a video source data buffer and carries out multi-computer synchronous playing and frame rate control according to the preset refresh frequency of the display card. Through the technical scheme of the invention, multi-computer synchronization problem caused by abnormal network communication and abnormal network response is greatly reduced without increasing any hardware cost; multi-computer synchronization and the frame rate are controlled by using the refresh rate of the display card; and the stable playing frame rate and the optimal synchronization effect are realized.

Description

technical field [0001] The invention belongs to the technical field of digital multimedia playback, and in particular relates to a multi-machine video synchronous playback method based on the refresh rate of a graphics card. 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 the same 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 netw...

AI Technical Summary

Problems solved by technology

[0007] There are two defects in this method: one is to install precise timers for all machines, which requires additional professional hardware, which increases costs, and additional hardware will also cause additional burdens on the computer, such as the power of the power supply. Wait

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