HAS video slice pushing method based on HTTP/2

Abstract

The invention discloses an HAS (HTTP, Adaptive Streaming) video slice pushing method based on HTTP / 2. The video slice pushing comprises the number of pushed video slices and a video slice request coderate. The method comprises: establishing and solving a multi-objective optimization problem by analyzing the relationship among the number of pushed video slices, the video request code rate and theprobability of jamming; based on this, providing an HAS push slice number dynamic selection algorithm based on HTTP / 2, and calculating the push video slice number in each request; determining how to calculate a request bandwidth, how to perform bandwidth estimation and how to select a video request code rate according to the estimated bandwidth through problem analysis; based on this, providing anHAS code rate adaptive algorithm based on HTTP / 2, and calculating the video slice request code rate in each request.

Description

technical field [0001] The invention belongs to the technical field of multimedia on-demand, relates to video-on-demand, video service providers, the number of video slice pushes, and the code rate of video slice requests, and in particular to a HTTP / 2-based HAS (HTTP Adaptive Streaming, HTTP Adaptive Streaming Media) Video slice push method. Background technique [0002] With the rapid development of the Internet and various mobile smart terminals, users can access multimedia video resources anytime and anywhere on various devices. In order to cope with heterogeneous terminals, HTTP adaptive streaming media technology came into being. HTTP Adaptive Streaming Technology (HAS, HTTP Adaptive Streaming) has become the current mainstream streaming technology and has received more and more attention. HAS technology divides the video into multiple slices, and stores multiple versions with different bit rates on the server, and then the client dynamically requests the appropriate ...

AI Technical Summary

Problems solved by technology

[0010] The above-mentioned related invention patents are all based on the traditional HTTP protocol for bit rate adaptation. The number of video slices obtained by the client for each request is unchanged, and the only change is the video bit rate.

At the same time, every time the client obtains a certain amount of video slices, it must send a request to the server. If the cache is exhausted during the process, a freeze will occur

These constraints make the user's video viewing experience limited, and the optimization method is relatively simple and not flexible enough

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