A network real-time streaming media transmission method and system

Abstract

The invention provides a network real-time streaming media transmission method and system. The system comprises a sending module and a receiving module. The sending module is used for packaging all audio-video data sections from an audio-video encoder into data packs, arranging the data packs into a multidimensional data array, and encoding payload in every dimension of the data packs in the multidimensional data array to obtain a plurality of encoding packs, wherein the encoding packs comprise the data packs and check codes. The receiving module is used for receiving the encoding packs from the sending module, arranging the encoding packs into an array, and sequentially judging whether the received data packs are lost or not according to a preset order; if yes, lost pack recovery is conducted through dimension circulation one by one, if all the data packs cannot be recovered yet when the lost pack recovery is completed, fewest data packs required for the multidimensional recovery of an algorithm are retransmitted, then the algorithm is recovered again, and the recovery of all the data packs are completed. By means of the method and system, the retransmission quantity is reduced, and the use of extra bandwidth and image delay caused by the use of the extra bandwidth are reduced.

Description

technical field [0001] The invention relates to the technical field of streaming media transmission. Background technique [0002] Currently, the use of packet-switched networks for real-time streaming is widespread. The quality of audio and video is very sensitive to network packet loss and delay. Once it happens, it will cause problems such as image blurring, tearing, and freezing, which will affect the user experience. [0003] To solve this problem, the current general practice is to use TCP as the transport layer protocol, and ensure reliable data transmission through the TCP retransmission mechanism. For example, a Chinese invention patent with the publication number CN102098547A discloses an embedded network adaptive / real-time high-definition video transmission method, including a variable bit rate encoding module, an encoding rate statistics module, a network sending module, a network transmission maximum bandwidth statistics module, Code stream adjustment decisio...

AI Technical Summary

Problems solved by technology

However, in this method, when the packet loss cannot be fully recovered, there is no follow-up processing method, which will still cause problems such as blurred screen

Moreover, in this method, only FEC encoding and error correction are performed based on the message sequence, and the error correction capability for packet loss is weak, especially when continuous packet loss occurs in the network, it cannot be handled, so it cannot meet the requirements of high-quality image transmission

In order to make these existing operation methods unstable in the network environment, especially on wireless links such as 4G, a large number of retransmissions will cause some data delays to increase, resulting in stuttering, cache

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