Data transmission method and device

Abstract

The invention discloses a data transmission method, which comprises the following steps that: a network device receives RTP data from a sending terminal; the network device identifies whether the RTP data is the RTP data corresponding to an I frame; when the RTP data is the RTP data corresponding to the I frame, the network device stores the RTP data into an RTP message distribution queue; and the network device sends the RTP data to a receiving terminal according to the RTP message distribution queue. Through the data transmission method and the device, the decoding capability of the receiving terminal is significantly improved so that a terminal user can obtain clear and stable videos and the use experience of the user is improved.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a data transmission method and device. Background technique [0002] With the rapid development of IP (Internet Protocol, Internet Protocol) network and audio and video codec technology, multimedia technologies such as telephones and televisions are more and more widely used on IP networks. VoIP (Voiceover Internet Protocol, digitization of analog voice signals ), network video surveillance and other technologies are becoming more and more popular. Among them, audio and video signals will be sampled, encoded, compressed, and encapsulated in IP packets through RTP (Real-time Transport Protocol, real-time transport protocol), and can be transmitted to the peer device through the IP network. Correspondingly, after decompression, Once decoded, it can be displayed to the end user. [0003] With the increasing popularity of network video servers and the full developmen...

AI Technical Summary

Problems solved by technology

[0011] However, when using the method of adjusting the size of the GOP interval, artificially adjusting the size of the GOP interval cannot dynamically adapt to the network situation. , a higher GOP is required to ensure the quality of the decoded audio and video, but the corresponding information cannot be obtained in time when the GOP interval is artificially adjusted

[0012] When the video server is used to intelligently detect and control the bandwidth in real time, when the network is congested, because the congestion may occur in any section of the network, at this time, it is difficult to use the video server to monitor the network congestion

[0013] When using a protocol with a retransmission mechanism to ensure that I frames will not be lost on the network, the retransmission mechanism requires the receiving end to determine whether there is packet loss, and the receiving end determines whether there is packet loss based on network conditions. There will be errors in judgment

In addition, in the case of severe congestion, resending packets may cause further network congestion and cause a large delay at the receiving end

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