A slicing method for SVC video files in a P2P streaming media system

A video file and streaming media technology, applied in the fragmentation field of SVC video files, can solve problems affecting video synchronization and coordination quality, increasing server and network overhead, etc., to facilitate network applications, improve synchronization and coordination quality, and meet the needs The effect of fewer parameters

Inactive Publication Date: 2014-02-26
NANJING YUNCHUAN INFORMATION TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since the data size of each fragment is not equal at this time, in order to realize the transmission and verification of fragments, the server needs to collect statistics on the size information of each fragment and distribute it to each client, so the server will increase and network overhead, affecting video synchronization and coordination quality

Method used

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  • A slicing method for SVC video files in a P2P streaming media system
  • A slicing method for SVC video files in a P2P streaming media system
  • A slicing method for SVC video files in a P2P streaming media system

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Embodiment

[0022] Embodiment: the SVC video file that the method of this embodiment is aimed at is JSVM encoding file, and its storage format is H.264 / AVC, the file of JSVM encoding, H.264 / AVC format, because the file of this type is current P2P streaming media The SVC video file commonly used in the system is also the SVC video file with the largest overhead on the server and the network in video synchronization and coordination. The fragmentation of this SVC video file is a technical problem that is urgently needed by those skilled in the art but has never been overcome. .

[0023] SVC video files encoded using JSVM are first mapped or encapsulated into NAL (Network Abstract Layer) units before transmission or storage. Each NAL unit includes a raw byte sequence load RBSP (Raw Byte Sequence Payload) and a set corresponding to NAL header information of video coding, the NAL header information includes a spatial layer identification value D, a temporal layer identification value T, and a ...

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Abstract

The invention discloses a slicing method for SVC video files in a P2P streaming media system. The slicing method for the SVC video files in the P2P streaming media system comprises the following steps: S1, SVC video data is read, and NAL units with equal triple values (D,T,Q) in NAL head information are stored in a same subfile, and at the same time, the file size C (i, j, k) of each subfile is subjected to statistical analysis and is stored; S2, each subfile is uniformly divided into N slices; and a maximum value of each slice is preset to be Smax, and the minimum value of each slice is preset to be Smin, so that a slice number N is any integer in accordance with the following formula, and the slice number N in each subfile is equal to the slice number of any other subfile; S3, according to the slice number N calculated according to the step S2, slicing is carried out on each subfile, and the size of each slice in each subfile is equal to the size of any other slice according to a data filling method. According to the slicing method for the SVC video files in the P2P streaming media system, costs spent on servers and networks are reduced, and synchronization and coordination quality of videos are raised.

Description

technical field [0001] The invention relates to a method for fragmenting SVC video files, in particular to a method for fragmenting SVC video files in a P2P streaming media system, and belongs to the technical field of video file processing. Background technique [0002] In recent years, P2P streaming media technology has achieved great success on the Internet and has been widely used all over the world. With the development of mobile communication technology and mobile devices, P2P technology will soon be widely used in mobile networks. In addition, with the development of triple play technology, users will use multiple terminals to share and interact through multiple networks. Therefore, how to realize P2P interaction and sharing of heterogeneous terminals in heterogeneous networks is an urgent problem to be solved. The SVC (Scalable Video Coding, Scalable Video Coding) technology is the best solution to this problem. [0003] When using SVC technology, the video is enco...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N21/845
Inventor 班志远
Owner NANJING YUNCHUAN INFORMATION TECH
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