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A method and device for controlling audio and video synchronization

A technology for audio and video synchronization and audio data, applied in the multimedia field, can solve the problem of asynchrony of audio and video data, and achieve the effect of avoiding the playback picture or sound from being stuck and ensuring the synchronization of audio and video.

Active Publication Date: 2020-04-03
저장진셍일렉트로닉스테크놀러지컴퍼니리미티드
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Problems solved by technology

[0005] This application provides a method and device for controlling audio and video synchronization to solve the problem of out-of-synchronization of played audio and video data

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  • A method and device for controlling audio and video synchronization
  • A method and device for controlling audio and video synchronization
  • A method and device for controlling audio and video synchronization

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Embodiment Construction

[0069] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all of them. Based on the embodiments of the present application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present application.

[0070] This application provides a new solution to solve the problem of asynchronous audio and video data. By configuring the audio data buffer area for the audio channel, the time for buffering audio data is used to offset the time for processing video data in the video channel, so that the audio data and The video data can be output at the same time, and when there is a delay in the n frames of video data before and after processing in the video chann...

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Abstract

The present application relates to the field of multimedia technology, and in particular to a method and device for controlling audio and video synchronization, so as to solve the problem of out-of-sync audio and video data played in the prior art. The method provided by the present application includes: inputting the collected video data and audio data into the video channel and the audio channel respectively; wherein, the audio channel is provided with an audio data buffer area, and the initial threshold of the audio data buffer area buffer data volume is according to the It is determined by the time of processing video data in the video channel; when the amount of buffered data in the audio data buffer area exceeds the initial threshold, the audio channel outputs audio data; calculate the time and the last processing time of n frames of video data in the video channel The difference between the times of n frames of video data; if it is determined that the calculated difference is greater than the first preset value, then increase the initial threshold; if it is determined that the calculated difference is smaller than the second preset value, then lower the initial threshold.

Description

technical field [0001] The present application relates to the field of multimedia technologies, in particular to a method and device for controlling audio and video synchronization. Background technique [0002] When playing audio and video data on devices such as terminal devices or televisions, the played picture and sound need to be synchronized to ensure the user's viewing experience. Generally speaking, after the device collects audio and video data, it needs to synchronously input video data and audio data to different channels for processing before outputting and playing. Since the process of processing video data is cumbersome and time-consuming, it is easy to There is a phenomenon that the played audio and video data is out of sync. [0003] At present, in order to solve the problem of out-of-sync audio and video data, the more commonly used technical means are to send the collected audio and video data into different buffer areas and set synchronization flags to e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N21/43H04N21/439
CPCH04N21/4392H04N21/43072H04N21/816H04N21/8106H04N21/44004H04N21/4852H04N21/4382H04N5/06H04N21/4305
Inventor 郑国建郑慧敏崔根强吕炳赟方伟
Owner 저장진셍일렉트로닉스테크놀러지컴퍼니리미티드
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