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A method and device for synchronizing audio and video

An audio and video synchronization, audio and video technology, applied in the direction of image communication, selective content distribution, electrical components, etc., can solve the problems of not being completely equal to the main player's control of time, freeze, etc.

Active Publication Date: 2020-11-20
HISENSE VISUAL TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides a method and device for synchronizing audio and video to solve the problem in the prior art that the time point after the jump from the player is still not completely equal to the dominant time of the main player, resulting in long-time stuck Dayton's problem

Method used

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  • A method and device for synchronizing audio and video
  • A method and device for synchronizing audio and video
  • A method and device for synchronizing audio and video

Examples

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Embodiment 1

[0060] Figure 4 It is a schematic flowchart of an audio-video synchronization method provided in Embodiment 1 of the present invention, as shown in image 3 As shown, the method mainly includes the following steps:

[0061] Step 301, receiving multimedia information broadcast by the main player from the player, wherein the multimedia information includes video synchronization information and source identification information;

[0062] Step 302, judging from the player whether this machine is playing the video according to the source identification information, if the currently played video is identical to the source identification information broadcast by the master player, step 303 is performed, otherwise step 304 is performed;

[0063] Step 303, calculating from the player the first difference between the first time point of the current playback of the video played by the player and the synchronization information domination time of the master player;

[0064] Step 304, i...

Embodiment 2

[0070] Figure 5 A schematic diagram of a method for synchronizing audio and video frames using the time axis provided in Embodiment 2 of the present invention, as shown in Figure 5 As shown, the method mainly includes the following steps:

[0071] Step 401, obtaining the second time point of the decoded audio and video frame from the player;

[0072] Step 402, calculate the second difference between the second time point and the third time point currently played on the time axis in the player synchronization module, if the second difference is less than the set output threshold, then execute step 403, otherwise Execute step 404;

[0073]Step 403, calculate the third difference of the third time point minus the second time point, if the third difference is greater than the set delay time, then execute step 406, otherwise execute step 405;

[0074] Step 404, wait for a period of time and re-execute step 401;

[0075] Step 405, output the audio or video frame of the current...

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Abstract

The invention discloses an audio and video synchronization method and device, relating to the technical field of wireless communication. In the prior art, a time point at when a slave player jumps isnot totally equal to management time of a master player, consequently, long-time freezing is caused. A slave determines a first difference between a first time point at when the slave player plays multimedia and synchronization information management time of the master player according to received information of multimedia played currently by the master player, wherein the information of the multimedia carries the synchronization information management time; and when the first difference is less than a jump threshold, the slave player updates a synchronization play timeline of the slave playeraccording to the synchronization information management time, and synchronizes audio and video frames of the multimedia played currently according to the synchronization play timeline.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, and in particular to an audio and video synchronization method and device. Background technique [0002] When displaying TV products in shopping malls, multiple display TVs are usually used to play the same video source at the same time, so as to better compare various products and attract customers. Because different TV products are equipped with different players, when multiple products start broadcasting the same source video, there will be problems in the starting time and playback speed difference, resulting in asynchronous playback of different players. , thus affecting the comparison effect played by different players. [0003] In the prior art, in order to solve the problem of audio and video synchronization between multiple players, a solution is to set up a master player and multiple slave players in a local area network, multiple slave players and a master playe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N21/43H04N21/439H04N21/4402
CPCH04N21/4307H04N21/4398H04N21/440281
Inventor 李斌周杰魏勇邦
Owner HISENSE VISUAL TECH CO LTD
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