Live time shift data storage method

A technology of data storage and time shifting, applied in the field of streaming media communication, to achieve the effect of reducing storage space requirements and I/O overhead

Inactive Publication Date: 2011-11-02
江苏远古信息技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Causes a sharp increase in the amount of data and a waste of storage space
[0005]Existing solutions cannot support P2P and non-P2P at the same time, one of the reasons is that P2P and non-P2P cannot share time-shifted storage files

Method used

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Examples

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Embodiment Construction

[0048] The specific implementation manners of data storage, indexing and playing of the present invention will be described below with reference to the accompanying drawings. The invention is mainly applied to the real-time and time-shifted TV programs of the interactive Internet TV service on personal computers, set-top boxes, TV sets or mobile phones and other equipment.

[0049] Taking a single server as an example, the specific implementation method of data storage in the present invention is as follows:

[0050] 1) Each channel has a separate directory in the server, such as figure 1 CCTV1 in. Each channel is further divided into a time-shifted data directory and an archived data directory. Such as figure 1 Shifting in is the time-shifted data directory, and CCTV1_20101001_20201010 is the archived data directory. Time shift maximum time can be set. The archive data directory can be divided into several directories according to the specified time interval. figure ...

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Abstract

The invention discloses a live time shift data storage method, which comprises the following steps of: 1) absolute time information and peer-to-peer (P2P) data block numbers are added into original live streams according to key frames, namely the absolute time information is added into stream data transmitted to a server by an encoder to prevent time asynchronization between the server and the encoder, wherein the step of adding the time information into the stream data also can be shifted to the server on the premise of performing time synchronization by using a time server or ensuring that the time of the server is accurate by other methods; 2) the server generates live time shift files in channels by using the live stream data into which the absolute time information and the P2P data block numbers are added; and 3) the server establishes indexes at the same time of performing live data storage, wherein the indexes of two levels are adopted, and comprise primary indexes which are file indexes and secondary indexes which are intra-file data stream indexes. By the method, file sizes are free from the limitations of time tags, and the needs of time shift unitcast, multicast and P2P transmission are satisfied at the same time.

Description

technical field [0001] The invention relates to the field of streaming media communication, in particular to storage of time-shifted TV streaming media data and its application method in a streaming media system. Background technique [0002] When users watch live programs, they can watch previous programs according to their own needs, which is Live Time Shift, also known as Time Shift Television (TSTV for short). In order to meet this requirement of the user, it is common practice to store a large amount of live streaming media data on the server. [0003] The currently disclosed time-shift storage technology adopts fragmentation technology when P2P is not used, that is, the server stores the live time-shift data in units of time stamps, and the player performs time-shift playback in units of files. The result is that the number of files is large, which is not easy to manage, and the minimum unit of time-shift playback is limited by the time stamp interval. [0004] The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N21/63G06F17/30
Inventor 季鹏程王彬韩小未
Owner 江苏远古信息技术有限公司
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