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Video and audio synchronization method and device

An audio and video synchronization, audio and video technology, applied in the multimedia field, can solve the problem of asynchrony between video data and audio data, etc.

Inactive Publication Date: 2018-03-06
BEIJING DIGIBIRD TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the above-mentioned problems in the prior art, that is, to solve the technical problem that video data and audio data are not synchronized, the present invention provides an audio-video synchronization method and device

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  • Video and audio synchronization method and device
  • Video and audio synchronization method and device

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Embodiment Construction

[0077] Preferred embodiments of the present invention are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention, and are not intended to limit the protection scope of the present invention.

[0078] At present, after receiving video data and audio data respectively, the video acquisition device encodes the received video data and audio data, and sends the encoded data to a decoding device for decoding and playing. During this process, due to problems such as limited network transmission bandwidth or complex network environment, the played audio and video may be out of sync. Based on this, the present invention provides an audio and video synchronization method, which can ensure high fluency and synchronization of played audio and video.

[0079] The audio-video synchronization method provided by the present invention will be descr...

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Abstract

The invention relates to the technical field of multimedia, and specifically provides a video and audio synchronization method and device for solving the technical problem that video data and audio data are not synchronized. For this purpose, the audio and video synchronization method in the invention comprises the following steps: obtaining an audio data packet and a video data packet, and separately storing corresponding audio frame data and video frame data; combining all stored audio frame data and video frame data into a video and audio data packet, and performing statistics on video frame rate; calculating the reference time of the next video and audio data packet according to the number and the video frame rate of the currently stored video and audio data packets; and judging whether the current moment is greater than the reference time, and if so, decoding the video and audio data packet. Meanwhile, the device in the invention can execute the steps of the method. The technicalscheme of the invention can ensure that the audio and video playback has high fluency and synchronicity under the condition of limited network transmission bandwidth or complex network environment.

Description

technical field [0001] The invention relates to the field of multimedia technology, in particular to an audio and video synchronization method and device. Background technique [0002] At present, with the development of high-definition and IP technologies, more and more video data and audio data are transmitted through the network. Specifically, the video collection device encodes the collected real-time video data and real-time audio data, and sends the coded data to the decoding device for decoding. However, in the above-mentioned transmission process, there may be situations where the network transmission bandwidth is limited or the network environment is complex, resulting in asynchronous video data and audio data, which seriously affects the viewing effect of audio and video. Contents of the invention [0003] In order to solve the above-mentioned problems in the prior art, that is, to solve the technical problem that video data and audio data are not synchronized, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N21/43H04N21/44H04N21/439
CPCH04N21/4302H04N21/4307H04N21/439H04N21/4392H04N21/44H04N21/44004H04N21/44008
Inventor 刘红院李厚鹏董志松孙立宁王自强崔标李伟温泉董学明杜键
Owner BEIJING DIGIBIRD TECH CO LTD
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