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Multimedia data reading method, apparatus and device, and medium

A technology for multimedia data and multimedia files, applied in multimedia data query, multimedia data indexing, multimedia data retrieval, etc., can solve problems such as low cache hit rate and high network bandwidth resource overhead, so as to improve cache hit rate and save I/O The effect of O request and network bandwidth resource overhead

Inactive Publication Date: 2017-10-20
ZHEJIANG DAHUA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present invention provide a method, device, medium and equipment for reading multimedia data, which are used to solve the problem of high I / O request and network bandwidth resource overhead caused by low cache hit rate in the prior art

Method used

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  • Multimedia data reading method, apparatus and device, and medium
  • Multimedia data reading method, apparatus and device, and medium
  • Multimedia data reading method, apparatus and device, and medium

Examples

Experimental program
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Embodiment 1

[0042] An embodiment of the present invention provides a method for reading multimedia data, such as figure 1 shown, including:

[0043] Step 101, determine index information of preset multimedia data in a multimedia file as first index information.

[0044] Specifically, the storage method of the multimedia file involved in the embodiment of the present invention is a non-sequential storage method, that is, the multimedia data in the multimedia file is not stored sequentially according to the playing order, for example, the storage method of the multimedia data in the multimedia file in MP4 format is non-sequential Continuous storage method. After the multimedia file in the discontinuous storage mode is stored, the index information of the multimedia data in the multimedia file will be recorded, so as to find the corresponding multimedia data according to the index information, and thus read the found multimedia data.

[0045] In this step, before the multimedia file is pla...

Embodiment 2

[0082] An embodiment of the present invention provides a device for reading multimedia data, such as Figure 4 shown, including:

[0083] A determining module 401, configured to determine index information of preset multimedia data in the multimedia file as first index information;

[0084] A search module 402, configured to search for the first index information from at least two preset caches, and the at least two preset caches are used to store multimedia data belonging to the multimedia file and index information corresponding to the multimedia data ;

[0085] The first reading module 403 is configured to, if the search module finds the first index information, read the multimedia data corresponding to the first index information from the cache storing the first index information as a preliminary Set multimedia data.

[0086] Optionally, the device also includes:

[0087]The second reading module 404 is configured to read the multimedia data corresponding to the first ...

Embodiment 3

[0096] An embodiment of the present invention provides a non-volatile computer storage medium, the computer storage medium stores an executable program, and the executable program is executed by a processor to implement any method for reading multimedia data provided in the first embodiment above. step.

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Abstract

The invention provides a multimedia data reading method, apparatus and device, and a medium. The method comprises the steps of determining index information of preset multimedia data in a multimedia file to take as first index information; seeking the first index information in preset at least two caches, wherein the preset at least two caches are used for storing multimedia data that belong to the multimedia file as well as index information corresponding to the multimedia data; and if the first index information is sought, reading multimedia data corresponding to the first index information from a cache that stores the first index information to take as the preset multimedia data. According to the multimedia data reading method, apparatus and device, and the medium provided by the invention, the hit rate of the cache can be improved; and thus, the I / O request and the network bandwidth resource overhead are saved.

Description

technical field [0001] The present invention relates to the technical field of distributed storage, in particular to a method, device, medium and equipment for reading multimedia data. Background technique [0002] At present, the storage mode of multimedia data (audio data and / or video data) actually used for playing in some multimedia files is a non-sequential storage mode, such as the storage mode of a multimedia file in MP4 format is a non-sequential storage mode. At this time, When playing a multimedia file stored in a non-sequential storage mode, a seek operation needs to be performed each time to reach the location of the multimedia data requested by the user to be played, and then read the multimedia data requested by the user from the corresponding location and play it , wherein the location of the multimedia data is the location of the multimedia data in the multimedia file. Among them, MP4, the full name of MPEG-4 Part 14, is a multimedia computer file format usi...

Claims

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Application Information

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IPC IPC(8): G06F12/0895G06F17/30
CPCG06F16/43G06F12/0895G06F16/41G06F2212/1021G06F2212/154G06F2212/163G06F2212/263
Inventor 马宋铮钱浩东王利刚
Owner ZHEJIANG DAHUA TECH CO LTD