A method and system for real-time separation, processing and synchronization of audio and video streams
A real-time separation, audio and video technology, applied in the direction of selective content distribution, image communication, electrical components, etc., can solve the problem that the audio device is difficult to satisfy audiophiles, does not have external amplifier equipment, and it is difficult to ensure the audio of the upper computer and the lower computer. Problems such as accurate video synchronization to achieve the effect of reducing network bandwidth
Inactive Publication Date: 2017-04-12
SYSU HUADU IND SCI & TECH INST +1
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Problems solved by technology
However, general smart terminals are not equipped with external speakers that can provide high-quality sound, and the integrated audio device is difficult to meet the requirements of some audiophiles.
Therefore, this type of audio-visual system has great application limitations.
[0005] The second type of audio-visual system is very different from the first
This meets the demand for high-quality sound enjoyment, but this system generally extracts audio data in real time and sends it to the audio equipment for real-time playback. It is difficult to ensure accurate synchronization of audio and video between the upper computer and the lower computer.
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[0031] Embodiments of the present invention will now be described with reference to the drawings, in which like reference numerals represent like elements.
[0032] Please refer to figure 1 , the invention provides a method for real-time separation, processing and synchronization of audio and video, comprising:
[0033] S1: The upper computer obtains and demultiplexes the media source file to obtain video stream and audio stream;
[0034] S2: The host computer performs video decoding and video filtering on the video stream to obtain video playback data, and plays the video playback data;
[0035] S3: The upper computer performs format conversion and encoding compression on the audio stream and then transmits it to the lower computer;
[0036] S4: The lower computer calls the decoder to decode and filter the audio stream to obtain audio playback data, and play the audio playback data;
[0037] S5: Perform initial synchronization processing on the video playback data and audi...
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The invention discloses a method for real-time separation treatment and synchronization of audio and video streams. The method comprises the steps that an upper computer obtains and demultiplexes a medium source file so as to obtain the video streams and the audio streams; the upper computer plays a video; format conversion and encoding compression are carried out on the audio streams, and then the audio streams are transmitted to a lower computer; the lower computer conducts decoding and filtering and plays an audio; initial synchronous treatment is carried out at the beginning of playing of the video and the audio, and synchronous correction treatment is carried out in the playing process. Compared with the prior art, separation treatment is carried out on the audio streams and the video streams, the occupied network bandwidths are reduced when the audio streams are transmitted to the lower computer, and in addition, it is ensured that the upper computer and the lower computer accurately and synchronously play the video and the audio respectively. The invention further discloses a system for real-time separation treatment and synchronization of the audio and video streams.
Description
technical field [0001] The present invention relates to the technical field of wireless audio and video processing, and more specifically relates to a central air-conditioning control method and a control system based on video population statistics analysis. Background technique [0002] With the rapid development of wireless network technology and the rapid upgrade of mobile wireless terminal hardware, many new technologies and new applications have become possible. The expansion of network technology and the performance improvement of hardware devices have made people put forward higher requirements for multimedia audio-visual experience. [0003] The types of most existing audio-video audio-visual systems mainly include: (1) smart device terminals are responsible for audio and video decoding and playback; (2) smart terminals are combined with high-quality audio equipment to provide audio and video playback. [0004] The decoding and playback of the first type of audio-vi...
Claims
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IPC IPC(8): H04N21/434H04N21/4402H04N21/4405H04N21/4408H04N21/439
Inventor 徐永键徐广健林澍霖阮俊杰谭洪舟
Owner SYSU HUADU IND SCI & TECH INST