Accurate and synchronous video playing method, apparatus and device among multiple devices, and storage medium

Abstract

The invention discloses an accurate and synchronous video playing method, apparatus and device among multiple devices, and a storage medium. The method comprises the following steps: receiving an audio signal generated by an upper device in a specified manner, wherein the specified manner comprises splitting complete audio needing to be played into multiple segments of the audio signal with specified playing time lengths, and adding a playing timestamp to each segment of the audio signal; and playing corresponding audio according to the audio signal. The accurate and synchronous video playingmethod, apparatus and device among multiple devices, and the storage medium disclosed by the invention have the beneficial effects that synchronous playing errors among the multiple devices are reduced, the synchronization precision is improved, an error jitter range after synchronization is small, the influence of the network delay in the synchronization process is low, the dependence on the hardware during the synchronous playing of the multiple devices is also reduced, the synchronous playing can be completed as long as the multiple devices can access each other through the network, and theversatility is high.

Description

Technical field [0001] The present invention relates to the field of wireless communication, and in particular to a method, device, device and storage medium for accurately synchronously playing audio among multiple devices. Background technique [0002] With the high maturity of network technology and increasingly abundant network resources, the application of wifi smart speakers has become more and more versatile, and people's requirements for wifi smart speakers have become higher and higher. In the past, the 5.1-channel audio system wired through power amplifiers was gradually replaced by the wireless connection technology of wifi smart speakers. However, for enthusiast users, the sound of each speaker of the 5.1-channel audio system must be strictly synchronized, otherwise the user experience will be greatly reduced. Therefore, it is required that the sound playback of each speaker must be synchronized at the sound sampling point level, that is, for audio with a sampling ra...

AI Technical Summary

Problems solved by technology

[0003] Since sound playback involves decoding, hardware data cache, hardware start-up time deviation, DAC conversion, clock crystal oscillator source oscillation deviation, etc., it is difficult for general solutions to achieve 50 microsecond level sound synchronization accuracy, and the current audio wireless synchronization There are many technologies, which are generally divided into two categories: synchronization through hardware modules. This type of technology uses a dedicated audio transmission module, which can better solve the problem of audio synchronization accuracy. However, the requirements for hardware modules are higher. The cost of the solution is also high; synchronization is achieved through software. This type of technology is mainly controlled by software to achieve synchronization, and the cost of the solution is low. However, due to the differences in hardware, the synchronization accuracy is average, and it is difficult to meet the requirements of multi-channel audio. (The deviation is at the level of 50 microseconds)

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