GOP data playback method, device and system

A data and sub-data technology, applied in the field of GOP data playback, can solve the problems of wasting storage space, unable to realize efficient storage and fast retrieval of GOP data, and achieve high-efficiency storage, solve the problem of cross-data unit storage, and efficient and fast retrieval Effect

Active Publication Date: 2016-12-14
ZHEJIANG UNIVIEW TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, if the length of each GOP data is variable, the above storage format is no longer applicable, and the efficient storage

Method used

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  • GOP data playback method, device and system
  • GOP data playback method, device and system
  • GOP data playback method, device and system

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Embodiment Construction

[0038] The terminology used in the present invention is for the purpose of describing specific embodiments only, not limiting the present invention. As used herein and in the claims, the singular forms "a", "the", and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It should also be understood that the term "and / or" as used herein is meant to include any and all possible combinations of one or more of the associated listed items.

[0039] It should be understood that although the terms first, second, third, etc. may be used in the present invention to describe various information, the information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of the present invention, first information may also be called second information, and similarly, second information may also be called first information. Dep...

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Abstract

The invention provides a GOP data playback method, device and system. The method comprises the steps that after a server receives a on demand request from a client, if the client requests GOP sub-data in variable length GOP data, the server judges whether an I frame corresponding to the GOP sub-data has been sent; if so, the server sends the GOP sub-data to the client, the client decodes a critical P frame of the GOP sub-data according to the I frame corresponding to the GOP sub-data cached therein, and plays back the decoded GOP sub-data; and otherwise, the server sends the I frame corresponding to the GOP sub-data and the GOP sub-data to the client, the client caches the I frame, decodes the critical P frame of the GOP sub-data according to the I frame and plays back the decoded GOP sub-data. By adopting the GOP data playback method, device and system in the technical scheme provided by the invention, in an encoding mode of the variable length GOP data, accurate second-order retrieval of the GOP data is realized, and the crossing data unit storage problem of the GOP data is solved.

Description

technical field [0001] The invention relates to the technical field of storage, in particular to a method, device and system for replaying GOP data. Background technique [0002] At present, front-end equipment (such as network cameras, analog cameras, encoders, etc.) can store video data in IP SAN (Storage Area Network, storage area network) based on the iSCSI (internet Small Computer System Interface, Internet-based small computer system interface) protocol. )equipment. Moreover, in order to achieve efficient storage and fast retrieval of a large amount of video data on IP SAN devices, an independent storage space can be divided for each front-end device in the IP SAN device, and a time index can be added, so that when retrieving video data, Video data at a specified time can be quickly located based on the time index. [0003] Such as figure 1 As shown, it is a schematic diagram of a storage format for a storage space of a front-end device, which is used to store and m...

Claims

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Application Information

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IPC IPC(8): H04N21/232H04N21/231H04N21/234H04N21/235H04N21/239H04N21/44H04N21/472
CPCH04N21/23113H04N21/232H04N21/23406H04N21/2353H04N21/2393H04N21/44004H04N21/47202
Inventor 成浩徐凤光
Owner ZHEJIANG UNIVIEW TECH CO LTD
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