Method and system for media process in multi-point conference

A multi-point conference and media technology, applied in the field of multimedia communication, can solve the problems of reduced MCU processing capacity, increased cost, poor scalability, etc., and achieves the effects of great flexibility and convenience, easy implementation, and good scalability.

Inactive Publication Date: 2008-01-02
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If it is implemented by hardware, it will greatly increase the cost; if it is implemented by software, it will take up a lot of system resources, resulting in a sharp drop in MCU processing capacity
[0013] 2. For MCUs that cannot provide codec processing, rate and protocol adaptation cannot be performed
If the MCU device in the original multipoint conference does not support the media processing of rate and protocol adaptation, but now to realize the adaptation function, the existing device must be replaced with a new device that provides codec, so the system has compatibility problems and scalability. not good
[0014] Looking at the above-mentioned solutions, none of them can effectively process the media data in the meeting with rate- and protocol-adapted media processing, so that the meeting cannot be carried out effectively and stably.

Method used

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  • Method and system for media process in multi-point conference

Examples

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no. 1 example

[0059] The first embodiment: a method for realizing adaptation between different rates in a multipoint conference

[0060] As shown in FIG. 1 , a multipoint conference is held on the MCU, wherein terminal A joins the conference at a high rate, and terminal B joins the conference at a low rate. During the conference, if terminal B needs to watch the image of terminal A, the MCU needs to perform rate adaptation processing on terminal A.

[0061] When terminal A accesses a multipoint conference, the MCU records the rate value of the code stream negotiated with the capabilities of terminal A; similarly, it also records the rate value of the code stream of terminal B. In the conference operation, when the MCU needs to switch the video image of the terminal, the MCU needs to make the following judgment: if the code stream rate value of the sending source terminal is greater than the code stream rate value of the receiving terminal, then the code stream needs to be rate-adapted proc...

no. 2 example

[0071] The second embodiment: a method for realizing adaptation between different protocols in a multipoint conference

[0072] As shown in Figure 1, a multipoint conference is held on the MCU, in which terminal A joins the conference with a bit stream encoded with the MPEG-2 standard protocol, and terminal B joins the conference with a bit stream encoded with the H.264 standard protocol. During the conference, if terminal B needs to watch the image of terminal A, the MCU needs to perform encoding protocol adaptation processing on terminal A.

[0073] During the meeting process, the MCU forwards the code stream of terminal A, which needs to be adapted to the protocol, as shown in Figure 5. The specific steps are as follows:

[0074] Step 301: The MCU forwards the code stream data received from the source terminal A using the MPEG-2 standard encoding protocol to the terminal C that can provide protocol adaptation;

[0075] Step 302: At the same time, the MCU notifies the termi...

no. 3 example

[0083] The third embodiment: a method for realizing multi-screen synthesis in a multipoint conference

[0084] As shown in Figure 1, a multi-point conference is held on the MCU. During the conference, terminal N needs to watch the synthesized images of terminal A and terminal B, and the MCU does not have the function of multi-screen synthesis, but terminal C has the function of multi-screen synthesis function, the MCU needs to perform multi-screen synthesis processing on terminal A and terminal B.

[0085] During the meeting, the MCU performs multi-screen synthesis processing on the data of terminal A and terminal B, as shown in Figure 6, and the specific steps are as follows:

[0086] Step 401: The MCU forwards the received two streams of code stream data from the source terminal A and terminal B to the terminal C that can provide multi-screen synthesis;

[0087] Step 402: At the same time, the MCU notifies terminal C through control signaling, requesting terminal C to perfo...

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Abstract

The invention provides a media processing method of multipoint conference, comprising that a multipoint controller receives the media code flow of source terminal, when needs to process the media code flow, the multipoint controller controls a media processing terminal to process the code flow, the multipoint controller transfers the processed code flow to a target terminal. The invention can fully utilize media processing terminal to complete the media process of multipoint conference, to apply different code flow speeds and protocol adapt in multipoint conference. Therefore, the MCU not supported media process in multipoint conference can realize media process as adapting speed and protocol, only via modifying the software of MCU, without adding hardware or refreshing MCU, with better expansion and easy realization.

Description

technical field [0001] The invention relates to the technical field of multimedia communication, in particular to a method and system for media processing in a multipoint conference. Background technique [0002] With the continuous development of modern network technology and broadband construction, multi-point conference systems have been widely used in the field of work and life. A multi-point conference system is a communication method that uses video conference technology and equipment to hold a conference between two or more locations through a transmission channel. A typical multi-point video conference system is shown in Figure 1, which includes terminals (including Video terminal and voice terminal), transmission network, multi-point control unit (also known as MCU or video exchange platform), gatekeeper (GK) and other parts. [0003] As shown in FIG. 1 , when an MCU holds a multipoint conference, nodes of the videoconferencing system such as terminals establish a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/18H04N7/15
Inventor 方柳龙彦波王恩奎
Owner HUAWEI TECH CO LTD
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