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Dynamic cache scheduling method and device for SVC-DASH on-demand system and storage device

A dynamic caching and on-demand system technology, applied in the field of audio and video applications, can solve problems such as video interruption, affecting user viewing experience, frequent switching of video quality, etc., to achieve increased speed, good video playback fluency, and good stability of playback quality Effect

Inactive Publication Date: 2019-01-01
CHINA UNIV OF GEOSCIENCES (WUHAN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, some problems still exist, such as frequent switching of video quality or even video interruption in a frequently fluctuating network environment, which seriously affects the viewing experience of users

Method used

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  • Dynamic cache scheduling method and device for SVC-DASH on-demand system and storage device
  • Dynamic cache scheduling method and device for SVC-DASH on-demand system and storage device
  • Dynamic cache scheduling method and device for SVC-DASH on-demand system and storage device

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Embodiment Construction

[0041] In order to have a clearer understanding of the technical features, objects and effects of the present invention, the specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0042] Embodiments of the present invention provide a dynamic cache scheduling method, device and storage device for an SVC-DASH on-demand system, which are used for figure 2 The video buffer model shown.

[0043] Please refer to figure 1 , figure 1 It is a flowchart of a dynamic cache scheduling method for an SVC-DASH on-demand system in an embodiment of the present invention, which specifically includes the following steps:

[0044]S101: Obtain a video source in SVC format, and divide the video source into n video slices evenly; and according to the quality level of the video source, evenly divide each video slice into m video blocks, and divide the M video blocks are stacked into m layers, and all video blocks are stored in ...

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Abstract

The invention provides a dynamic cache scheduling method and device for an SVC-DASH on-demand system and a storage device. The dynamic cache scheduling method comprises: fragments are stacked horizontally in dynamic cache space to realize a good on-demand effect, so that a problem that the watching experience of the user is affected by the frequent fluctuation of the network quality in a heterogeneous network is solved; with a fragment layer-based extraction model, the fluency and smoothness of video playing are improved; and a dynamic caching mechanism is added to accelerate video quality improvement and the fault tolerance of scheduling and the utilization rate of the bandwidth are improved, so that the video quality smoothness is further enhanced. In addition, the invention also relatesto a dynamic cache scheduling device for an SVC-DASH on-demand system and a storage device, thereby realizing the dynamic cache scheduling method for an SVC-DASH on-demand system. The dynamic cache scheduling method has the following beneficial effects: compared with the existing SVC-DASH scheduling method, the dynamic cache scheduling method enables the quality improvement speed, average qualitylevel, video playing fluency, and playing quality smoothness to be enhanced.

Description

technical field [0001] The invention relates to the field of audio and video applications, in particular to a dynamic cache scheduling method, device and storage device for an SVC-DASH on-demand system. Background technique [0002] Today, the distribution and transmission of web content is growing significantly, and video content accounts for a large proportion of it. According to Cisco VNI (Cisco VNI) forecast, by 2021, annual global IP traffic will reach 3.3ZB, while video traffic will occupy 82% of the proportion and dominate. In terms of video transmission, facing the heterogeneity of terminals and networks, we need to provide videos of different quality for different devices and changing networks. The HTTP Adaptive Streaming (HAS) technology came into being, and the client can select video segments of different quality according to its own situation. As a member of HAS, DASH has developed into the most advanced video streaming by virtue of its many advantages. commun...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N21/845H04N21/433H04N21/4335H04N21/24H04N21/472H04N21/262H04N21/438H04N21/238
CPCH04N21/238H04N21/2401H04N21/26216H04N21/4331H04N21/4335H04N21/438H04N21/47202H04N21/8456
Inventor 余林琛蒋宇浩涂大喜
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)