HLS streaming media transmission method and device

Abstract

The invention discloses a HLS streaming media transmission method and apparatus. The method includes the following steps: generating a M3U8 index file of a HLS streaming media file; based on the M3U8 index file, dividing each HLS Slice into a plurality of logic Slices, and based on the logic Slices, generating a Checksum check file; transmitting the M3U8 index file and the Checksum check file via a TCP link; and transmitting a UDP package constituted by the logic Slices via the UDP link. According to the invention, the method and the apparatus change transport layer protocols of the HLS streaming media from traditional TCPs to UDPs, effectively address problem of transmission efficiency caused by three-way handshaking, congestion control, sliding window and the like mechanisms of TCP, and increases the transmission efficiency of the HLS streaming media.

Description

technical field [0001] The invention relates to the technical field of triple network integration, in particular to an HLS streaming media transmission method and device. Background technique [0002] HLS (HTTP Live Streaming, hypertext transfer protocol live streaming media) streaming media technology has the advantages of low requirements on streaming servers and terminals, and can ensure the fluency of playback under different networks through multiple bit rates, so it has become popular in Internet video services in recent years. occupies a mainstream position in the application. [0003] The resolution of 4K video is four times that of 1080P video. At the same time, the chromaticity and frame rate are also greatly improved, but the requirements for network transmission are also greatly improved. For example, under H.265 encoding, the bandwidth requirement is also up to 30Mbps above. 4K video OverHLS is currently the main transport solution, but it has very strict requ...

AI Technical Summary

Problems solved by technology

4K video OverHLS is currently the main bearer solution, but it has very strict requirements on network quality such as network delay and packet loss rate, which limits its large-scale promotion and greatly increases construction costs

[0004] In the 4K test of Shanghai Telecom, the RTT (Round-Trip Time, round-trip delay) delay required to be less than 15ms for normal viewing, which has extremely high requirements on the network; this problem is due to the fact that HLS uses the TCP (Transmission Control Protocol, Transmission Control Protocol) protocol, Although mechanisms such as the three-way handshake, congestion control, and sliding windows of the TCP protocol can improve the reliability of transmission, they have caused relatively large restrictions on high-speed transmission; in the prior art, UDP (User Datagram Protocol, User Datagram Protocol) is in In the network, it is used to process data packets like the TCP protocol, but it is a connectionless protocol. UDP is very efficient, but it does not provide the disadvantages of packet grouping, assembly, and inability to sort data packets, that is, That is, after the message is sent, it is impossible to know whether it has arrived safely and completely.

[0005] In the prior art, Wangsu proposed the patented scheme of using UDP to transmit HTTP. Using UDP to transmit HTTP is an effective solution to improve single-stream bandwidth, but the disadvantage of this method is also obvious: this method is not suitable for 4K large bit rate files Transmission, due to the use of the waiting timeout mechanism, this solution is only applicable to small files. HTTP Get (Hypertext Transfer Protocol acquisition) has only one request for large and small files, which is not suitable for large files; and UDP retransmits when an error occurs. For large file, the amount of content to retransmit is extremely large

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