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Audio and video synchronization method, device and system

An audio and video synchronization and video package technology, applied in the field of communication, can solve the problems of poor audio and video code stream synchronization effect, and achieve the effect of improving user experience

Active Publication Date: 2021-10-22
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention provides an audio and video synchronization method, device and system to at least solve the problem of poor synchronization of audio and video code streams in the related art when STB switches channels

Method used

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  • Audio and video synchronization method, device and system
  • Audio and video synchronization method, device and system
  • Audio and video synchronization method, device and system

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Embodiment Construction

[0029] Hereinafter, the present invention will be described in detail with reference to the drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0030] It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence.

[0031] In this embodiment, a method for synchronizing audio and video is provided, figure 1 It is a flow chart of the audio-video synchronization method according to the first embodiment of the present invention, such as figure 1 As shown, the process includes the following steps:

[0032] In step S102, the first device acquires the original code stream sent by the encoder.

[0033] In this step, the first device can be directly connected to the enc...

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PUM

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Abstract

The invention provides an audio and video synchronization method, device and system. Wherein, the method includes: the first device performs reduction processing on the difference between the audio packet and the display time tag PTS of the video packet in the original code stream to obtain a recombined code stream, wherein the recombined code stream is used for the set-top box to perform audio and video synchronization processing; The first device sends the reassembled code stream to the set-top box. Through the present invention, the problem of poor synchronization effect of audio and video code streams in the related art is solved when STB switches channels, and then without any modification to the set-top box, audio and video synchronization can be quickly realized during channel switching, which greatly improves user experience.

Description

technical field [0001] The present invention relates to the communication field, in particular to an audio and video synchronization method, device and system. Background technique [0002] As the STB (Set Top Box, set-top box) technology becomes increasingly mature, how to improve user experience becomes an urgent problem to be solved. Usually, when the STB switches channels, in order to realize the synchronous output of video and audio, the following two synchronization mechanisms are generally adopted: [0003] (1) Slow synchronization: STB starts to output video (not equal to audio synchronization) after receiving the video. During the playback process, the video is gradually synchronized with the audio by replaying or dropping frames. The advantage of this method is that the video playback speed is fast and the channel switching speed is fast, but the slow motion phenomenon will be seen in the first few seconds of switching to the channel, which will affect the user ex...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N21/236H04N21/438H04N21/2389
CPCH04N21/23605H04N21/2389H04N21/4383H04N21/236
Inventor 刘成刚易鹤声陈洲曹珈范旭彤尤洪涛田智平王芳
Owner ZTE CORP