Method, device and system for fragmenting video data

A technology of video data and parameters, applied in the field of video, can solve problems such as inability to decode and play, decrease in video quality, and affect user browsing experience, so as to improve the success rate and ensure the quality of transmission

Inactive Publication Date: 2013-04-03
深圳市信方达科技发展股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the larger fragments in the video data are mostly important fragments, the failure to successfully transmit the larger fragments will lead to a decrease in video quality or even inability to decode and play, which affects the user's browsing experience

Method used

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  • Method, device and system for fragmenting video data
  • Method, device and system for fragmenting video data
  • Method, device and system for fragmenting video data

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiments of the present invention provide a method for video data fragmentation, such as figure 1 shown, including the following steps:

[0034] 101. Acquire information about the size of each layer of video data.

[0035] 102. Set the initial value of the slice duration parameter of each layer of the video data to the same predetermined value.

[0036] 103. Determine the size ratio coefficient between two adjacent layers from top to bottom according to the size information of each layer of video data.

[0037] 104. Determine the segment duration parameters of each layer of the video data from top to bottom according to the size ratio coefficient between two adjacent layers determined in step 103.

[0038] 105. Determine the segment duration of each layer of video data according to the segment duration parameters of each layer of video data.

[0039] 106. Segment each layer of the video data according to the segment duration of each layer of the video data.

[00...

Embodiment 2

[0043] Embodiments of the present invention provide a method for video data fragmentation, such as figure 2 shown, including the following steps:

[0044] 201. Obtain information on the size of each layer in at least one of the three dimensions of space, time, and quality.

[0045] The embodiment of the present invention is illustrated by simultaneously acquiring the size information of each layer in the three dimensions of space, time and quality as an example: assuming that there are L layers in the space dimension, M layers in the time dimension, and N layers in the quality dimension, take S( i, j, k) represent a video data layer, where 0≤i≤L-1, 0≤j≤M-1, 0≤k≤N-1. In practical applications, the size information of each layer in any one or two dimensions of the three dimensions can also be obtained.

[0046] 202. Set the initial value of the slice duration parameter of each layer to the same predetermined value.

[0047] Before determining the slice duration parameters of...

Embodiment 3

[0075] The embodiment of the present invention provides a device for fragmenting video data, such as image 3 As shown, it includes: an acquisition unit 31, an initialization unit 32, a first determination unit 33, a second determination unit 34, a third determination unit 35, and a fragmentation unit 36, wherein,

[0076] The obtaining unit 31 is configured to obtain information about the size of each layer of video data.

[0077] The initialization unit 32 is configured to set the initial value of the slice duration parameter of each layer of the video data to the same predetermined value.

[0078] The first determination unit 33 is configured to determine the size ratio coefficient between two adjacent layers from top to bottom according to the size information of each layer of the video data.

[0079] The second determination unit 34 is configured to determine the slice duration parameters of each layer of video data from top to bottom according to the size ratio coeffici...

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Abstract

The invention discloses a method, a device and a system for fragmenting video data, relates to the field of a video technology and aims at improving the success rate of the fragment transmission. The method comprises the steps of: acquiring all layers of information on the video data, setting initial values of all layers of fragment duration parameters of the video data as a same preset value, determining the size ratio coefficient between the every two adjacent layers according to the size information of all the layers of video data from top to bottom, determining the fragment duration parameters of all the layers of video data according to the size ratio coefficients of the every two adjacent layers, and determining the fragment duration of all the layers of video data according to the fragment duration parameters of ally the layers of video data, and fragmenting all the layers of video data according to the fragment durations of all the layers of the video data. The method, the device and the system are mainly applied to the network video field.

Description

technical field [0001] The present invention relates to the field of video technology, in particular to a video data fragmentation method, device and system. Background technique [0002] In recent years, with the development of P2P streaming media technology, more and more users choose to watch videos online through various P2P software. After the video data is coded and fragmented, it is distributed in the network. After the user terminal decodes the fragments, it can watch the video online without downloading the complete video. As the prerequisite and guarantee for the smooth transmission of video data, video data fragmentation technology is the key to P2P video streaming technology. [0003] In the current study, the video is coded into a base layer and multiple enhancement layers using Scalable Video Coding (SVC), and then an equal-length sharding method is used to divide all data with equal sharding durations. Floor. The client ensures the normal decoding and playb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N21/63H04N21/238H04L29/06
Inventor 宋俊平周旭张棪张伟
Owner 深圳市信方达科技发展股份有限公司
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