Control method, device and system for broadcasting audio and video code streams in hybrid conference

A control method, audio and video technology, applied in the direction of video conferencing system, two-way working system, electrical components, etc., can solve the problem of high bandwidth requirements, achieve the effect of saving bandwidth resources, improving the efficiency of judgment, and saving processing time

Inactive Publication Date: 2015-12-09
SUZHOU KEDA TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the problem in the prior art that the single-stream terminal can receive all the images of the multi-stream terminal by expanding the receiving capability of the single-stream terminal, which will bring about excessive bandwidth requirements, thus proposing A control method, device and system for broadcasting audio and video code streams in a mixed conference without additional bandwidth occupied by single-stream terminals

Method used

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  • Control method, device and system for broadcasting audio and video code streams in hybrid conference
  • Control method, device and system for broadcasting audio and video code streams in hybrid conference
  • Control method, device and system for broadcasting audio and video code streams in hybrid conference

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] Such as figure 2 As shown, the establishment of a conference with the conference control server includes multiple multi-stream terminals and multiple single-stream terminals, forming a form of a mixed conference. The audio and video code stream sending and receiving process can be divided into the following two categories:

[0065] 1) A multi-stream terminal is used as a broadcast terminal, and other multi-stream terminals and single-stream terminals are used as audience terminals to transmit and receive audio and video code streams, such as figure 2 As shown by the arrow in the middle line, a multi-stream terminal sends multiple audio and video code streams to the conference control server, and the conference control server sends the multiple audio and video code streams to other multi-stream terminals The stream is converted into a single-channel audio and video stream and sent to a single-stream terminal;

[0066] 2) A single-stream terminal is used as a broadcas...

Embodiment 2

[0090] Corresponding to Embodiment 1, this embodiment provides a control device for broadcasting audio and video streams in a mixed conference, such as Figure 5 As shown, the device is used for example in figure 2 The conference control server in , including:

[0091] The first judging unit 1 is configured to respectively judge whether the broadcast terminal and the audience terminal are multi-stream terminals or single-stream terminals according to the number of media streams supported by the broadcast terminal and the audience terminal.

[0092] The first receiving unit 2 is configured to receive multiple audio and video streams sent by the broadcast terminal when the broadcast terminal is a multi-stream terminal and the viewer terminal is a single-stream terminal.

[0093] The decoding unit 3 is used to decode multiple audio and video code streams.

[0094]The encoding unit 4 is configured to synthesize the decoded data, and encode the synthesized data into a single aud...

Embodiment approach

[0099] As a preferred implementation manner, the above-mentioned first judging unit 1 includes:

[0100] The third receiving unit is configured to receive the media capability message sent by the broadcast terminal or the audience terminal.

[0101] The second judging unit is configured to judge whether the audio (audio) tag or the video (video) tag contained in the media capability message is multi-channel or single-channel.

[0102] The first terminal type obtaining unit is configured to determine that the broadcast terminal or the audience terminal is a multi-stream terminal when the included audio (audio) tag or video (video) tag is multi-channel.

[0103] The second terminal type obtaining unit is configured to determine that the broadcast terminal or the audience terminal is a single-stream terminal when the included audio (audio) tag or video (video) tag is single-channel.

[0104] Those skilled in the art should understand that the method of judging whether a broadcas...

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PUM

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Abstract

The invention discloses a control method, device and system for broadcasting audio and video code streams in a hybrid conference, wherein the method comprises the following steps: respectively judging whether a broadcasting terminal and an audience terminal are multi-stream terminals or single-stream terminals or not according to the number of media streams supported by the broadcasting terminal and the audience terminal; receiving multiple audio and video code streams sent by the broadcasting terminal when the broadcasting terminal is the multi-stream terminal and the audience terminal is the single-stream terminal; decoding the multiple audio and video code streams; synthesizing decoded data, and coding the synthesized data into single audio and video code stream; and sending the single audio and video code stream to the audience terminal. According to the invention, the audio and video code streams can be broadcasted in the hybrid conference on the premise of not additionally increasing the occupied bandwidth of the single-stream terminal.

Description

technical field [0001] The invention relates to the technical field of multimedia communication, in particular to a control method, device and system for broadcasting audio and video code streams in a mixed conference. Background technique [0002] The current video conferencing terminals are divided into single-stream terminals and multi-stream terminals. Single-stream terminals are terminals that only have the ability to receive and send a single audio and video stream, and multi-stream terminals are capable of receiving and sending multiple audio and video streams. terminal. [0003] In the mixed conference of multi-stream terminals and single-stream terminals, especially in the current telepresence video conference, multi-stream terminals need to send or receive multiple audio and video streams to reproduce the one-to-one panoramic picture of the meeting room. Such as figure 1 As shown, the multi-stream terminal sends and receives multiple audio and video streams to th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/15H04N21/434
Inventor 石文娟罗东礼房滔万春雷范军爽翟小刚
Owner SUZHOU KEDA TECH
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