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Bit-rate asymptotic switching method and system for dynamic adaptive HTTP (Hyper Text Transfer Protocol) stream

A dynamic self-adaptive, bit rate technology, applied in the field of audio and video applications, can solve the problem of increasing bit rate reduction, and achieve the effect of less bit rate switching, comprehensive bit rate switching strategy, and reasonable bit rate selection.

Inactive Publication Date: 2019-02-22
CHINA UNIV OF GEOSCIENCES (WUHAN)
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Problems solved by technology

At the same time, but when the network congestion is intensified, the bit rate reduction range will inevitably increase sharply

Method used

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  • Bit-rate asymptotic switching method and system for dynamic adaptive HTTP (Hyper Text Transfer Protocol) stream
  • Bit-rate asymptotic switching method and system for dynamic adaptive HTTP (Hyper Text Transfer Protocol) stream
  • Bit-rate asymptotic switching method and system for dynamic adaptive HTTP (Hyper Text Transfer Protocol) stream

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Embodiment Construction

[0025] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.

[0026] refer to image 3 , this application first briefly introduces the construction of the application platform and environment of the present invention, specifically:

[0027] A. Set up a streaming media server that provides video services;

[0028] B. Prepare the DASH video source and place it on the streaming server;

[0029] C. Generate the corresponding description file (MPD) for the source video according to the DASH standard

[0030]D. Deploy the method or system proposed by the present invention on the DASH client.

[0031] refer to Figure 4 , the present invention is divided into two main working modules, the first is to perform bandwidth estimation:

[0032] S1, analyze the download speed of the W bloc...

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Abstract

The invention discloses a bit-rate asymptotic switching method and system for a dynamic adaptive HTTP (Hyper Text Transfer Protocol) stream. The method comprises broadband estimation and bit-rate switching. According to the bit-rate asymptotic switching method for the dynamic adaptive HTTP stream, a network bandwidth is estimated more strictly, and a bit rate is selected more reasonably, so that an unsmooth playing phenomenon in a video playing process rarely exists; meanwhile, the bandwidth is used to the greatest extent, so that an average bit rate of a video is relatively high, and the video quality is optimized; a bit-rate switching strategy is more comprehensive, which enables the number of times of bit-rate switching to be as small as possible; furthermore, in case of switching, theswitching action is also controlled to be performed stage by stage as far as possible; the whole bit-rate adaptive process is higher in stability and smoothness; and therefore, a high-quality experience requirement of a user in a film watching process is guaranteed.

Description

technical field [0001] The present invention belongs to streaming media technology and DASH technology, and belongs to the field of audio and video applications. More specifically, the present invention relates to a method and system for gradually switching code rates applied in dynamic adaptive streaming media systems. On the streaming media playback client, adaptive control of video playback is implemented to ensure users have a better user experience. Background technique [0002] In recent years, with the rapid development of mobile Internet and smart phone technology, multimedia services account for an increasing proportion of the entire Internet traffic, and video traffic has become the main network traffic on the Internet. Currently, according to the Cisco Visual Networking Index forecast report, by 2020, video traffic will account for 82% of all consumer traffic and content delivery network traffic. [0003] The traditional streaming media transmission technology us...

Claims

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Application Information

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IPC IPC(8): H04N21/433H04L29/08H04N21/4402H04N21/2385H04N21/262H04N21/2662H04N21/442
CPCH04L67/02H04N21/2385H04N21/26216H04N21/2662H04N21/433H04N21/4402H04N21/44209
Inventor 余林琛涂大喜蒋宇浩徐成
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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