CN103309930B - Based on historical video frequency searching and the method for down loading of index service - Google Patents
Based on historical video frequency searching and the method for down loading of index service Download PDFInfo
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Abstract
The invention discloses a kind of historical video frequency searching and method for down loading based on index service, based on historical video frequency searching and the method for down loading of index service, the retrieval of historical video and downloading service all depend on the recorded information of idx index file, local this time period is interior without historical video, the corresponding idx file of file generated inquiring according to front end, if there is historical video, according to the file update idx file inquiring; In downloading process, according to frame, analysis obtains the timestamp of last I frame, the xml node of downloaded file in recording channel idx, and according to file idx and the corresponding list of file generated that downloaded, generating according to list need to be as the time period video of front end request. Adopt the recorded information of idx index file to retrieve and download, carry out segmentation preservation for the video after downloading, inquire about and watch conveniently.
Description
Technical field
The present invention relates to a kind of historical video frequency searching and method for down loading based on index service.
Background technology
Video monitoring has a long history, and is traditionally widely used in safety-security area, is to assist public safety department to fight crime, maintain the important means of social stability. Along with popularizing of broadband, the development of computer technology, the raising of image processing techniques, video monitoring is penetrated into other various fields such as education, government, amusement, medical treatment, hotel, motion just more and more widely.
Video Supervision Technique is divided into three phases according to equipment development process: analog video monitoring, digital video monitoring, intelligent video monitoring, in the past few decades, computer vision field the obtaining of video data, store, transmission and operating aspect all obtained very large breakthrough and progress.
Video monitoring system has the following advantages:
(1) safe, image mask technology, prevents from illegally distorting Video Document; Only have authorized user just can the system of entering to check, call video data, can provide to the administrative staff of different identity the management account of different rights; Effectively prevent malicious sabotage; Powerful log management function, has ensured the safe handling of dedicated system. The data of transmitting between server end and client, all through encrypting.
(2) rights management is to ensure online personnel's privacy and the safety of Video Document, and this video monitoring system has operating right management, and strict control of authority is carried out in system login, operation, ensures the security of system.
Video monitoring can also carry out video playback and video is downloaded, conveniently in real time monitor video is analyzed, but in downloading process, if fruit selects the video time section downloaded longer, easily occur that video downloads incomplete phenomenon, or for the time period that repeats to select, be prone to situation about repeatedly downloading, not only waste broadband, also easily take the memory headroom of computer or other memory devices, situation about also easily duplicating while watching, brings a lot of inconveniences to video analysis.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of recorded information of the idx of employing index file to retrieve and download, carry out segmentation preservation for the video after downloading, be difficult for duplicating download, inquire about and watch historical video frequency searching and the method for down loading based on index service easily.
The object of the invention is to be achieved through the following technical solutions: based on historical video frequency searching and the method for down loading of index service, the retrieval of historical video and downloading service all depend on the recorded information of idx index file, and it comprises the following steps:
S101: the video file in the historical video file period of inquiry front end, if local this time period is interior without historical video, the corresponding idx file of file generated inquiring according to front end, otherwise according to the file update idx file inquiring;
S102: the video of asking hour is downloaded;
S103 a: time point in hour of request download starts to browse, after previous video downloads to the time that starts to browse time, user asks to download the video that starts to browse front certain time point;
S104: analysis obtains the timestamp of last I frame according to frame, the xml node of downloaded file in recording channel idx, according to file idx and the corresponding list of file generated that downloaded, generating according to list need to be as the time period video of front end request;
S105: the download of historical video adopts the logical process of backward priority, is when should preferentially downloading after the video of downloading the time that completing user request downloads after this request time and holds the video of download, and then continue to download video file above;
S106: downloaded after current historical video, download thread starts to download uncompleted video;
S107: when user clicks after the video frequency searching that enters hour, the principle that the file that the needs that draw according to passage idx are downloaded takes backward time priority to download equally;
S108: passage idx has recorded the file idx generating with the partitioning scheme of front end file, the query video business that upper strata client enters one hour, first issue the xml of the front end file of this hour, download module is according to xml transaction file idx, if front end is not, adds; Otherwise illustrate that front end deleted, client should be deleted.
Described idx file comprises passage idx and file idx, and passage idx is the idx of camera, index the history file downloaded of corresponding camera this locality; File idx, index respective file I frame relativity shift and be under the jurisdiction of which concrete video file.
Described passage idx has recorded the file idx generating with the partitioning scheme of front end file, the query video business that upper strata client enters one hour, first issue the xml of the file of the front end of this hour, download module is according to xml transaction file idx, if front end has file idx, client is not added; If front end does not have or front end has been deleted, client is also deleted.
Described file idx and front end video file are consistent, and by analysis channel idx, generate the threshold value that idx file is not downloaded.
If the video time length of user's request is less than 2 minutes, before request time, move back download in 2 minutes.
In downloading process, when user closes thread, judge whether the playout length of current file is greater than 20 seconds, if be not more than 20 seconds, directly delete idx record.
The invention has the beneficial effects as follows: adopt the recorded information of idx index file to retrieve and download, carry out segmentation preservation for the video after downloading, be difficult for duplicating download, inquire about and watch conveniently; Can judge in downloading process, when user closes thread, whether the playout length of current file is greater than 20 seconds, if be not more than 20 seconds, directly delete idx record, if the timestamp of record is greater than more than 20 seconds, delete the unnecessary data of corresponding video file by the deviation post of record.
Brief description of the drawings
Fig. 1 is download flow chart of the present invention.
Detailed description of the invention
Further illustrate technical scheme of the present invention below in conjunction with accompanying drawing, but the content that the present invention protects is not limited to the following stated.
As shown in Figure 1, based on historical video frequency searching and the method for down loading of index service, the retrieval of historical video and downloading service all depend on the recorded information of idx index file, and it comprises the following steps:
S101: the video file in the historical video file period of inquiry front end, if local this time period is interior without historical video, the corresponding idx file of file generated inquiring according to front end, otherwise according to the file update idx file inquiring;
S102: the video of asking hour is downloaded;
S103 a: time point in hour of request download starts to browse, after previous video downloads to the time that starts to browse time, user asks to download the video that starts to browse front certain time point;
S104: analysis obtains the timestamp of last I frame according to frame, the xml node of downloaded file in recording channel idx, according to file idx and the corresponding list of file generated that downloaded, generating according to list need to be as the time period video of front end request;
S105: the download of historical video adopts the logical process of backward priority, is when should preferentially downloading after the video of downloading the time that completing user request downloads after this request time and holds the video of download, and then continue to download video file above;
S106: downloaded after current historical video, download thread starts to download uncompleted video;
S107: when user clicks after the video frequency searching that enters hour, the principle that the file that the needs that draw according to passage idx are downloaded takes backward time priority to download equally;
S108: passage idx has recorded the file idx generating with the partitioning scheme of front end file, the query video business that upper strata client enters one hour, first issue the xml of the front end file of this hour, download module is according to xml transaction file idx, if front end is not, adds; Otherwise illustrate that front end deleted, client should be deleted.
Described idx file comprises passage idx and file idx, and passage idx is the idx of camera, index the history file downloaded of corresponding camera this locality; File idx, index respective file I frame relativity shift and be under the jurisdiction of which concrete video file.
Described passage idx has recorded the file idx generating with the partitioning scheme of front end file, the query video business that upper strata client enters one hour, first issue the xml of the file of the front end of this hour, download module is according to xml transaction file idx, if front end has file idx, client is not added; If front end does not have or front end has been deleted, client is also deleted.
Described file idx and front end video file are consistent, and by analysis channel idx, generate the threshold value that idx file is not downloaded.
If the video time length of user's request is less than 2 minutes, before request time, move back download in 2 minutes.
In downloading process, when user closes thread, whether the playout length that judges current file is greater than 20 seconds, if be not more than 20 seconds, directly delete idx record, for example download for the first time as 80710-80934, user clicks 80300 and starts to play for the second time, should download in theory this segment data of 80300-80709, if downloaded to this time, 80659 users have selected to close or the redirect of other times is moved, judging that current 80659 and 80709 these time points that download to differ this time is less than 20 seconds, so directly the I frame recording of deleted file idx record ensures 80300 this last 1 frames of I frame recording, if the timestamp of record was greater than for 80709 these times more than 20 seconds, delete the unnecessary data of corresponding video file by the deviation post of record.
Claims (6)
1. historical video frequency searching and the method for down loading based on index service, the retrieval of historical video and downloading service all depend on the recorded information of idx index file, it is characterized in that: it comprises the following steps:
S101: the video file in the historical video file period of inquiry front end, if local this time period is interior without historical video, the corresponding idx file of file generated inquiring according to front end, otherwise according to the file update idx file inquiring;
S102: the video of asking hour is downloaded;
S103 a: time point in hour of request download starts to browse, after previous video downloads to the time that starts to browse time, user asks to download the video that starts to browse front certain time point;
S104: analysis obtains the timestamp of last I frame according to frame, the xml node of downloaded file in recording channel idx, according to file idx and the corresponding list of file generated that downloaded, generating according to list need to be as the time period video of front end request;
S105: the download of historical video adopts the logical process of backward priority, is when should preferentially downloading after the video of downloading the time that completing user request downloads after this request time and holds the video of download, and then continue to download video file above;
S106: downloaded after current historical video, download thread starts to download uncompleted video;
S107: when user clicks after the video frequency searching that enters hour, the principle that the file that the needs that draw according to passage idx are downloaded takes backward time priority to download equally;
S108: passage idx has recorded the file idx generating with the partitioning scheme of front end file, the query video business that upper strata client enters one hour, first issue the xml of the front end file of this hour, download module is according to xml transaction file idx, if front end is not, adds; Otherwise illustrate that front end deleted, client should be deleted.
2. historical video frequency searching and the method for down loading based on index service according to claim 1, it is characterized in that: described idx file comprises passage idx and file idx, passage idx is the idx of camera, index the history file downloaded of corresponding camera this locality; File idx, index respective file I frame relativity shift and be under the jurisdiction of which concrete video file.
3. historical video frequency searching and the method for down loading based on index service according to claim 2, it is characterized in that: described passage idx has recorded the file idx generating with the partitioning scheme of front end file, the query video business that upper strata client enters one hour, first issue the xml of the file of the front end of this hour, download module is according to xml transaction file idx, if front end has file idx, client is not added; If front end does not have or front end has been deleted, client is also deleted.
4. historical video frequency searching and the method for down loading based on index service according to claim 2, is characterized in that: described file idx and front end video file are consistent, and by analysis channel idx, generates the threshold value that idx file is not downloaded.
5. historical video frequency searching and the method for down loading based on index service according to claim 1, is characterized in that: if the video time length of user's request is less than 2 minutes, before request time, move back download in 2 minutes.
6. historical video frequency searching and the method for down loading based on index service according to claim 1, it is characterized in that: in downloading process, when user closes thread, judge whether the playout length of current file is greater than 20 seconds, if be not more than 20 seconds, directly delete idx record.
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| CN106547805A (en) * | 2015-09-23 | 2017-03-29 | 北京奇虎科技有限公司 | The method and apparatus of optimization database index |
| CN106131689A (en) * | 2016-06-27 | 2016-11-16 | 乐视控股（北京）有限公司 | Method for downloading video and device |
| CN114363670B (en) * | 2019-08-01 | 2024-05-28 | 浙江大华技术股份有限公司 | Video reading method, device, equipment and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102682016A (en) * | 2011-03-15 | 2012-09-19 | 新奥特（北京）视频技术有限公司 | Indexing system and method supporting MOV (Movie Digital Video Technology)/3GP (3G Player)/MP4 (Mobile Pentium 4) files |
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| US20110072037A1 (en) * | 2009-09-18 | 2011-03-24 | Carey Leigh Lotzer | Intelligent media capture, organization, search and workflow |
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| CN102682016A (en) * | 2011-03-15 | 2012-09-19 | 新奥特（北京）视频技术有限公司 | Indexing system and method supporting MOV (Movie Digital Video Technology)/3GP (3G Player)/MP4 (Mobile Pentium 4) files |
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Denomination of invention: Historical video retrieval and download method based on Index Service Effective date of registration: 20220711 Granted publication date: 20160511 Pledgee: Zheshang Bank Co.,Ltd. Chengdu Branch Pledgor: SICHUAN TIANYI NETWORK SERVICE Co.,Ltd. Registration number: Y2022510000204 |
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Date of cancellation: 20230710 Granted publication date: 20160511 Pledgee: Zheshang Bank Co.,Ltd. Chengdu Branch Pledgor: SICHUAN TIANYI NETWORK SERVICE Co.,Ltd. Registration number: Y2022510000204 |
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Address after: Third floor, No.10, Jiuxing Avenue, high tech Zone, Chengdu, Sichuan 610041 Patentee after: Sichuan Tianyi Network Co.,Ltd. Address before: Third floor, No.10, Jiuxing Avenue, high tech Zone, Chengdu, Sichuan 610041 Patentee before: SICHUAN TIANYI NETWORK SERVICE Co.,Ltd. |
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Denomination of invention: Historical Video Retrieval and Download Method Based on Index Service Effective date of registration: 20230804 Granted publication date: 20160511 Pledgee: Zheshang Bank Co.,Ltd. Chengdu Branch Pledgor: Sichuan Tianyi Network Co.,Ltd. Registration number: Y2023510000192 |