HAS video slice pushing method based on HTTP/2

A slicing and video technology, applied in image communication, selective content distribution, electrical components, etc., can solve problems such as single optimization method, inflexibility, and limited improvement of video viewing experience

Active Publication Date: 2019-07-30
XI AN JIAOTONG UNIV +1
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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

Method used

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  • HAS video slice pushing method based on HTTP/2
  • HAS video slice pushing method based on HTTP/2
  • HAS video slice pushing method based on HTTP/2

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Embodiment Construction

[0071] The implementation of the present invention will be described in detail below in conjunction with the drawings and examples.

[0072] as attached figure 1 As shown, the present invention is a HAS video slice push method based on HTTP / 2. By analyzing the relationship between the number of pushed video slices, the video request code rate, and the probability of freezing, a multi-objective optimization problem is established and carried out Solution; secondly, a dynamic selection algorithm for the number of slices pushed by HAS based on HTTP / 2 is proposed, which is used to calculate the number of pushed video slices for each request; in addition, through problem analysis, it is determined how to calculate the bandwidth of the request, how to estimate the bandwidth and how to Select the video request bit rate according to the estimated bandwidth; finally, a HAS bit rate adaptive algorithm based on HTTP / 2 is proposed to calculate the video slice request bit rate for each req...

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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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N21/2662H04N21/262H04N21/24H04N21/238H04N21/472H04N21/643
CPCH04N21/238H04N21/2402H04N21/2407H04N21/26216H04N21/2662H04N21/47202H04N21/643
Inventor 杜海鹏齐冰芳张未展黄寿钦王轩宇王迎春李姝洁何智超柳俊全冯立楷栾佳锡王敬祎郑庆华赵敏李国斌高祥玉王雪松周新运
Owner XI AN JIAOTONG UNIV
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