Cross-device method for synchronously playing audio and video data, playing devices and system thereof

Abstract

The embodiment of the invention provides a cross-device method for synchronously playing audio and video data, playing devices and a system thereof. The method comprises the following steps: obtaining an audio data packet played by a current system via a first playing device and recording first system time of the first playing device when obtaining the audio data packet; determining audio playing time of the audio data packet via the first playing device and sending the audio data packet and the audio playing time to a second playing device; playing the audio data packet via the second playing device when an absolute value of time difference between the current system time of the second playing device and the audio playing time is less than or equal to a preset threshold; and playing video images corresponding to the audio data packet via the first playing device according to video playing time, and synchronously playing the audio and video data of different devices, wherein the video playing time is the sum of the first system time and the predetermined playing delay time; the audio playing time is the sum of the first system time, the playing delay time, and the system time difference between the first playing device and the second playing device.

Description

technical field [0001] The invention relates to the field of data processing, in particular to a method for synchronously playing audio and video data across devices, a playing device and a system. Background technique [0002] With the rapid development of information technology, especially the popularization of network technology, communication technology and multimedia technology, it is becoming more and more popular for users to watch videos on large-screen devices. Therefore, corresponding multimedia services, such as: video conferencing, distance learning and Internet live broadcast Business, etc., showing a trend of exponential growth. In many occasions, a user wishes to play video data and audio data separately through different playback devices, for example, a TV plays video data, and a mobile terminal plays audio data. In the existing method for synchronous playback of audio and video data, the following two methods are usually adopted to realize synchronous playb...

AI Technical Summary

Problems solved by technology

[0006] In the existing first method for synchronous playback of audio and video data, after the first playback device completes the synchronized audio data packets and video images, when the distance between the first playback device and the second playback device is large, due to The transmission time used by the first playback device to send the audio data packet to the second playback device will be longer, and the existing first method of synchronous playback of audio and video data cannot synchronize the audio data packets and video images that have been played synchronously in time. Play on the second playback device; in the existing method for synchronously playing the second audio and video data, because the first playback device sends the separated audio data to the second playback device to play, the first playback device will play according to the first playback device. The audio playback progress of the second playback device plays video data synchronously, that is to say, the final synchronous playback of audio data and video data is completed through the cooperation of the first playback device and the second playback device

Therefore, in the prior art, it would be very complicated to realize synchronous playback of audio and video data on different devices

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