A method and system for audio and video forwarding control

A control method and technology for a control system, which are applied in the field of audio and video forwarding control methods and systems, can solve the problems of no congestion mechanism, slow increase in RTP flow speed, and unfavorable network bandwidth utilization, and achieve the effect of enhancing network adaptability.

Active Publication Date: 2017-03-22
SUIRUI TECH CO LTD
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0013] Existing flow control algorithms based on constant increase and constant decrease will cause flow control. If the two increase and decrease constants are set too large, the jitter of the RTP flow will be large, which will aggravate network congestion and if the setting is too large Small, the speed of the RTP stream will increase too slowly or decrease too fast, which is not conducive to the improvement of network bandwidth utilization
[0014] In the existing technology, the use of TCP retransmission mechanism is likely to cause network congestion, while UDP's best-effort delivery transmission method avoids the retransmission mechanism, but because it does not provide a congestion mechanism, it cannot be adjusted according to network conditions

Method used

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  • A method and system for audio and video forwarding control
  • A method and system for audio and video forwarding control
  • A method and system for audio and video forwarding control

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Embodiment Construction

[0029] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. However, the embodiments of the present invention are not limited thereto.

[0030] The principle of the embodiment of the method of the present invention is to utilize multiple servers to cascade and use the RTP / RTCP protocol, and according to the dynamic feedback of RTCP, the transmission rate can be dynamically adjusted between each server and between the server and the client. The server side receives the real-time video data RTP packet or RTCP packet sent from the source client or source server, and then analyzes the data packet, if it is an RTP packet, it is directly forwarded to the target client or target server; if it is an SR packet, it is calculated The amount of RTP data packets received, and at the same time, according to the received SR statistical packets of the source client or source server, the received packet loss rate, delay,...

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Abstract

The present invention provides an audio and video forwarding control method and system, the method comprising: the sending end sends RTP packets, and after sending a set number of RTP packets, generates and sends SR packets according to the number of currently sent RTP packets; the receiving end Receive the RTP packet and SR packet, and after receiving the SR packet, count the number of RTP packets currently received, calculate the packet loss rate and generate RR according to the number of currently sent RTP packets carried in the SR packet The packet is returned to the sending end; the sending end receives the RR packet, obtains the packet loss rate; adjusts the rate of sending RTP packets according to the packet loss rate. Compared with the prior art, the present invention can dynamically adjust and control the transmission rate of audio and video data according to the network congestion state.

Description

technical field [0001] The invention relates to the technical field of multimedia network transmission, in particular to an audio and video forwarding control method and system. Background technique [0002] In recent years, with the rapid development of Internet and multimedia technology, network video conferencing with good real-time and interactive features has been widely used. However, the currently used video conferencing mostly uses the TCP / IP protocol to transmit real-time audio and video data, the real-time effect is poor and cascading cannot be performed between servers. [0003] Due to the connection-oriented retransmission mechanism of the traditional TCP / IP protocol, it can no longer meet the real-time transmission of multimedia video data, and its congestion mechanism is likely to cause network congestion, which is not conducive to the transmission of large amounts of multimedia audio and video data. Although the UDP protocol uses a best-effort delivery method...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/825H04L12/823H04L12/811H04L29/06H04L47/32
Inventor 白青松
Owner SUIRUI TECH CO LTD
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