A method and device of a digital audio and video transmission playback

An audio-video, audio-video decoding technology, applied in image communication, selective content distribution, electrical components, etc., can solve the problem of asynchrony of audio and video data, achieve smooth viewing, improve viewing experience, and reduce cache size.

Inactive Publication Date: 2011-12-07
POWERLAYER MICROSYST HLDG
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0003] The present invention provides a digital audio and video variable-speed playback method, aiming at problems such as delay, interruption, and interruption when watching audio and video programs on the existing network, and the resulting audio and video data out of synchroniz

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  • A method and device of a digital audio and video transmission playback
  • A method and device of a digital audio and video transmission playback
  • A method and device of a digital audio and video transmission playback

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Embodiment Construction

[0032] The present invention will be described below in conjunction with the accompanying drawings.

[0033] figure 1 It is the first preferred flow chart of the method for digital audio and video variable speed playback of the present invention, the method includes the following steps:

[0034] A. Receive and store the audio and video data transmitted locally; the audio and video data transmitted to the local include audio and video data before audio and video decoding, audio and video data after audio and video decoding, and / or audio and video data that have not been processed by audio and video codec Original audio and video data.

[0035] B. Process and analyze the device / network status and the audio and video data stored locally to obtain device / network status parameters and audio and video parameters; specifically, the status of the device that provides audio and video data or the network where the audio and video terminal is located The status is processed and analyze...

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Abstract

The present invention relates to a method and device for playing digital audio and video at variable speeds. The method first receives and stores the audio and video data transmitted to the local area, and then the device/network status and the audio and video data stored in the local area, or to the cache of the system, or to the system The cache and local audio and video data are processed and analyzed, and then the parameters of audio and video speed change are determined, so that the speed of audio and video data is changed, and then the audio and video data after speed change are processed synchronously, and finally the synchronously processed Audio and video data is output to playback devices or storage devices. The method can solve the problems of delay, intermittent, stuck and other problems encountered in the current network audio and video playback and the resulting out-of-sync problem of audio and video data without changing the current network conditions and increasing network costs.

Description

technical field [0001] The invention relates to a digital audio and video processing technology, in particular to a method and device for playing digital audio and video at variable speeds. Background technique [0002] With the development of Internet technology, audio and video, as an important information carrier, can be disseminated quickly and conveniently through the Internet, and applications such as online on-demand and live broadcast of audio and video through the Internet have been widely developed. Users can easily access the Internet through terminals such as personal computers, mobile phones, and TVs, and watch audio and video content such as movies, TV series, and news. The prior art does not consider the status of the network where the audio and video terminal is located and the audio and video code stream when performing network audio and video on demand, live broadcast and other applications, and plays audio and video at the original speed specified by the p...

Claims

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Application Information

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IPC IPC(8): H04N21/238H04N21/231H04N21/24
Inventor 马明孙晓刚谢林
Owner POWERLAYER MICROSYST HLDG
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