Video conference system and method based on CDN

Abstract

The invention discloses a video conference system and method based on the CDN. The system comprises video and audio acquisition terminals and the CDN, wherein the video and audio acquisition terminals are arranged in various conference halls, and the CDN is located in an internet platform. The system further comprises CDN node servers and a multipoint video stream synthesis server. The CDN node servers are used for acquiring video and audio streams of the conference halls and forwarding the video and audio streams of the conference halls to the multipoint video stream synthesis server, and after the multipoint video stream synthesis server synthesizes the video streams of the conference halls into frames, the synthesized frames are distributed to the CDN node servers through the CDN. By means of the characteristic of CDN data processing balance, the conference system is established on the internet, the difficult situation that a traditional private wire network is a point-to-point hardware facility and cannot be revoked once being established is avoided, the joining threshold is greatly lowered, and application and popularization of video conferences are facilitated.

Description

technical field [0001] The present invention relates to data network transmission, in particular to a CDN network-based video conferencing system and method, which is non-point-to-point, but receives the video stream of each sub-site through the CDN node, and then forwards it to the composite service system, fully A video conferencing system and method utilizing an Internet CDN network. Background technique [0002] Video conferencing system, including software video conferencing system and hardware video conferencing system, refers to two or more individuals or groups in different places, through the existing various telecommunication transmission media, the static and dynamic images and voices of the characters , text, pictures and other materials are distributed to the computers of each user, so that geographically dispersed users can gather together in one place, exchange information through graphics, sound and other ways, and increase the ability of both parties to und...

AI Technical Summary

Problems solved by technology

The disadvantage is that the cost of line rental is too high, and the general small and medium-sized enterprises cannot afford it at all, and the opening of the dedicated line is very cumbersome, and the transmission equipment of the dedicated line is also very expensive. Another point is that the E1 dedicated line does not guarantee that any place can be reached

Another point is that the dedicated line may not necessarily be able to follow the company's relocation.

[0007] 2. If a PSTN telephone line is used between two points, the line rental cost can be reduced, but the transmission bottleneck of this line is only 64K, and the image and sound quality cannot be guaranteed

But there is one of the most deadly shortcomings. The transmission bandwidth between operators cannot be guaranteed, so the image and sound quality cannot be guaranteed.

[0009] 4. The most important point is that the equipment of professional video conferencing system is very expensive, and ordinary small and medium-sized companies cannot afford it, and the cost performance is too low

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