Audio/video collection and playing system based on transcoder, and working method thereof

Abstract

The invention provides an audio / video collection and playing system based on a transcoder, and a working method thereof, and belongs to the field of image processing and transmission. The system comprises the transcoder, a video collection device, a video playing device, an audio collection device and an audio playing device; the video collection device, the video playing device, the audio collection device and the audio playing device are all connected with the transcoder; and the transcoder comprises an input interface module, a transcoding module, a protocol package module, an output interface module and a central processor. The system provided by the invention adopts the adaptive audio / video transcoder to decode code streams of multiple manufacturers and multiple compression modes in one decoder and to encode code streams of multiple compression modes in one encoder; and meanwhile, the control flexibility is maximized, the costs and the spaces of the devices are reduced, and the installation and maintenance time is also shortened.

Description

technical field [0001] The invention relates to the field of image processing and transmission, in particular to an audio and video acquisition and playback system based on a transcoder and a working method thereof. Background technique [0002] With the development of multimedia technology and network technology, the demand for digital audio and video products has increased sharply in recent years, and audio and video codec technology has become one of the core technologies of digital audio and video; at the same time, audio and video codecs occupy an important role in security systems. It has an irreplaceable important position and has formed a very mature product. [0003] The video compression standards in the field of video surveillance have also changed from the initial MPEG-1 and MPEG-4 to today's H.264. Under the same image quality conditions, the compression ratio is getting larger and the code stream is getting smaller. Space is becoming more and more efficient. ...

AI Technical Summary

Problems solved by technology

[0004] In response to the above situation, many encoder manufacturers have optimized some encoding algorithms according to their specific implementation requirements, but this has caused codec devices from different manufacturers to be unable to communicate with each other.

There is a problem that the encoder code streams of most manufacturers can only be decoded by the dedicated decoder provided by the manufacturer

For a large-scale audio and video monitoring system, multiple audio and video products are usually used, and the management center usually needs to upload the signal to the video wall. However, the audio and video compression standards of different manufacturers are different, so it is impossible to achieve complete integration. Difficult to achieve centralized and integrated management

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