Serial number generation method of HLS multi-code-rate stream slice, server and storage medium

Abstract

The embodiment of the invention relates to the technical field of live broadcast, and discloses an HLS multi-code-rate stream slice serial number generation method, a server and a storage medium. The method comprises the following steps: respectively slicing each received HLS multi-code-rate sub-stream, setting a slice name and a serial number of a slice, and storing a corresponding relationship between the slice name and the serial number; generating the serial number of the first slice based on the current system time, and progressively increasing the serial number of the non-first slice by a second step length; if metadata change occurs in the substream to trigger the slice, searching a serial number corresponding to the slice name of the first slice after metadata change in the corresponding relation; if the corresponding serial number is found, setting the serial number of the first slice after the metadata is changed as the corresponding serial number; and progressively setting the serial number of the non-first slice after the metadata is changed according to the second step length, so the problem that the serial number of the generated slice is reversed during HLS slicing can be effectively solved, and the synchronization of the slice names and the serial numbers among the sub-streams of the HLS multi-code-rate stream is ensured.

Description

technical field [0001] The embodiment of the present invention relates to the field of live broadcast technology, and in particular to a method and server for generating a sequence number of HLS multi-bit-rate stream slices. Background technique [0002] HLS (full name HTTP Live Streaming) is an HTTP-based streaming media network transmission protocol. This protocol supports the client to play videos with different bit rates and resolutions under different network bandwidth environments. [0003] The implementation of HLS is to cut the entire multimedia file into small HTTP-based resources (files in MPEG-2Transport Stream format), also known as "slicing", and generate an extended M3U (M3U8) Playlist file containing the slice file uri , only some resources in the list are downloaded each time, and the client can choose different resources to download and play according to the bandwidth environment. In the HLS protocol, each slice has a corresponding sequence number, and ide...

AI Technical Summary

Problems solved by technology

[0004] In practical applications, the data timestamp in the code stream is usually used to calculate the serial number of the slice. This method will cause the serial number of the slice to roll back when the data timestamp overflows or goes backwards, so that the serial number-sensitive When the player plays these code streams, playback exceptions will occur

In addition, the serial number of the slice is calculated by the system time. Although the serial number can be avoided to a certain extent, the rollback of the serial number can be avoided. However, for HLS multi-bit-rate streams, simply using the system time to calculate the serial number of the slice may cause differences between sub-streams of different bit rates. The title and serial number of the title are not synchronized, which may cause the HLS player to be abnormal

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