CN106803911A - Thumbnail creating and reading method for NVR video file - Google Patents
Thumbnail creating and reading method for NVR video file Download PDFInfo
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- CN106803911A CN106803911A CN201710124298.0A CN201710124298A CN106803911A CN 106803911 A CN106803911 A CN 106803911A CN 201710124298 A CN201710124298 A CN 201710124298A CN 106803911 A CN106803911 A CN 106803911A
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- video
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- nvr
- video file
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/70—Information retrieval; Database structures therefor; File system structures therefor of video data
- G06F16/73—Querying
- G06F16/738—Presentation of query results
- G06F16/739—Presentation of query results in form of a video summary, e.g. the video summary being a video sequence, a composite still image or having synthesized frames
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Theoretical Computer Science (AREA)
- Signal Processing (AREA)
- Computational Linguistics (AREA)
- Data Mining & Analysis (AREA)
- Databases & Information Systems (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Television Signal Processing For Recording (AREA)
Abstract
The invention discloses a thumbnail creating and reading method of an NVR video file, which comprises the following steps: (1) when the video begins, sending the first I frame data in the video file into a decoder module to decode the data, and generating original video image data; (2) the generated original image data is sent to a universal format image encoder, and the image is encoded into data with a format irrelevant to a platform; and storing the data into a buffer area; (3) after the video recording is finished, the coded general format image data is inserted into the header of the video file in a virtual frame form and positioned between the virtual frame header and the video file data during packaging; (4) the video retrieval module retrieves all video files in the storage area and reads the general format image data bodies positioned behind the virtual frame headers in each video file one by one; (5) and the NVR system program associates each read image data body with the corresponding video file respectively and establishes a link.
Description
Technical field
Based on safety precaution, field of video monitoring, more particularly to a kind of video record file by NVR
Video recording thumbnail creation and read method.
Background technology
Video recording inquiry and retrieval are one of major functions of support in embedded NVR kind equipments memory module, can looked into
Ask the video file information of the at the appointed time each passage in area of section.
The Core Feature of embedded NVR kind equipments is storage, the code that NVR equipment spreads out of the web camera that itself is linked
Circulation turns to the video record file stored on NVR local disks, as video archive data, inquires about and has access to for user.
Video recording inquiry traditional in embedded NVR kind equipments can inquire about the video recording of the at the appointed time each passage in area of section
Fileinfo, is presented to user in the way of information list, and the problem that do so is present is：
1st, Query Result is not directly perceived.Information list is only able to display the essential information of file, and the statement to file content is almost 0.
2nd, search efficiency is low, and due to not knowing that the content in monitor video, user is difficult disposably to find oneself and wants
Video file.
If thumbnail can be added to video record file in video recording query interface, can just solve the above problems, but simultaneously
Bring in a new problem, the video file of each manufacturer is simultaneously incompatible, client realize the thumbnail of video file show, it is necessary to
It is independent of other configurations file（Such as single case cover files or database）.
The content of the invention
The present invention is intended to provide a kind of thumbnail image creation method of NVR video files, to reduce in huge Video data
The workload of the middle a certain scene characteristic of inquiry so that the practicality and efficiency of video recording inquiry are greatly promoted.
To achieve these goals, the invention provides the 1. a kind of thumbnail creations and read method of NVR video files,
It is characterised in that it includes following steps：
（1）When video recording starts, by the first I frame data in video file, feeding decoder module is decoded to the data, raw
Into raw video image data；
（2）The raw image data of the generation, sends into general format image encoder, by the Image Coding into unrelated with platform
Form data；And it is stored in buffer area；
（3）The general format view data for completing is encoded after video recording terminates, during packing video recording text is inserted into the form of virtual frames
Part stem, between virtual frame head and video file data；
（4）All video files in video retrieval module retrieval memory block, and read void is located in each video file one by one
Intend the general format image data volume behind frame head；
（5）Each general format image data volume that NVR system programs will read respectively with each self-corresponding video file phase
Association, and establish the link.
At least there are an I frame data in the video file.
Image after the general format image encoder coding is BMP forms or JPG forms.
The NVR sends the data to the video flowing of the machine by the web camera being deployed in monitoring system, wound
Build video file.
The data structure of the video file after the NVR codings, including file header, virtual frame head, general format picture number
According to body, video file data body.
The beneficial effects of the invention are as follows, the workload that a certain scene characteristic is inquired about in huge Video data is reduced,
So that video recording query process is more directly perceived, practicality and efficiency are greatly promoted.
Brief description of the drawings
Fig. 1 realizes step schematic diagram for this method.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings：
As shown in figure 1, a kind of thumbnail creation and read method of NVR video files, comprise the following steps：
（1）When video recording starts, by the first I frame data in video file, feeding decoder module is decoded to the data, raw
Into raw video image data；
（2）The raw image data of the generation, sends into general format image encoder, by the Image Coding into unrelated with platform
Form data；And it is stored in buffer area；
（3）The general format view data for completing is encoded after video recording terminates, during packing video recording text is inserted into the form of virtual frames
Part stem, between virtual frame head and video file data；
（4）All video files in video retrieval module retrieval memory block, and read void is located in each video file one by one
Intend the general format image data volume behind frame head；
（5）Each general format image data volume that NVR system programs will read respectively with each self-corresponding video file phase
Association, and establish the link.
At least there are an I frame data in the video file.
Image after the general format image encoder coding is BMP forms or JPG forms.
The NVR sends the data to the video flowing of the machine by the web camera being deployed in monitoring system, wound
Build video file.
The data structure of the video file after the NVR codings, including file header, virtual frame head, general format picture number
According to body, video file data body.
Claims (5)
1. a kind of thumbnail creation and read method of NVR video files, it is characterised in that comprise the following steps：
（1）When video recording starts, by the first I frame data in video file, feeding decoder module is decoded to the data, raw
Into raw video image data；
（2）The raw image data of the generation, sends into general format image encoder, by the Image Coding into unrelated with platform
Form data；And it is stored in buffer area；
（3）The general format view data for completing is encoded after video recording terminates, during packing video recording text is inserted into the form of virtual frames
Part stem, between virtual frame head and video file data；
（4）All video files in video retrieval module retrieval memory block, and read void is located in each video file one by one
Intend the general format image data volume behind frame head；
（5）Each general format image data volume that NVR system programs will read respectively with each self-corresponding video file phase
Association, and establish the link.
2. a kind of thumbnail image creation method of NVR video files according to claim 1, it is characterised in that the video recording
At least there are an I frame data in file.
3. the thumbnail image creation method of a kind of NVR video files according to claim 1, it is characterised in that described general
Image after format-pattern encoder coding is BMP forms or JPG forms.
4. the thumbnail image creation method of a kind of NVR video files according to claim 1, it is characterised in that the NVR with
The web camera being deployed in monitoring system sends the data to the video flowing of the machine, creates video file.
5. the thumbnail image creation method of a kind of NVR video files according to claim 1, it is characterised in that the NVR is compiled
The data structure of the video file after code, including file header, virtual frame head, general format image data volume, video file data
Body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710124298.0A CN106803911A (en) | 2017-03-03 | 2017-03-03 | Thumbnail creating and reading method for NVR video file |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710124298.0A CN106803911A (en) | 2017-03-03 | 2017-03-03 | Thumbnail creating and reading method for NVR video file |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106803911A true CN106803911A (en) | 2017-06-06 |
Family
ID=58988842
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710124298.0A Pending CN106803911A (en) | 2017-03-03 | 2017-03-03 | Thumbnail creating and reading method for NVR video file |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109151511A (en) * | 2018-10-19 | 2019-01-04 | 天津天地伟业电子工业制造有限公司 | A kind of intelligence video recording fast playing method and device based on space temperature |
| CN111405221A (en) * | 2020-01-13 | 2020-07-10 | 海信电子科技（深圳）有限公司 | Display device and display method of recording file list |
| CN113836335A (en) * | 2021-08-09 | 2021-12-24 | 深圳市猿人创新科技有限公司 | Thumbnail display method and device, electronic equipment and readable storage medium |
| CN116389453A (en) * | 2023-02-24 | 2023-07-04 | 杭州图谱光电科技有限公司 | Method and device for rapidly displaying video file thumbnail and information thereof in embedded system |
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| US20040032968A1 (en) * | 2002-05-31 | 2004-02-19 | Canon Kabushiki Kaisha | Embedding a multi-resolution compressed thumbnail image in a compressed image file |
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| CN1744700A (en) * | 2004-09-02 | 2006-03-08 | 上海乐金广电电子有限公司 | Abbreviated diagram service method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109151511A (en) * | 2018-10-19 | 2019-01-04 | 天津天地伟业电子工业制造有限公司 | A kind of intelligence video recording fast playing method and device based on space temperature |
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| CN113836335A (en) * | 2021-08-09 | 2021-12-24 | 深圳市猿人创新科技有限公司 | Thumbnail display method and device, electronic equipment and readable storage medium |
| CN116389453A (en) * | 2023-02-24 | 2023-07-04 | 杭州图谱光电科技有限公司 | Method and device for rapidly displaying video file thumbnail and information thereof in embedded system |
| CN116389453B (en) * | 2023-02-24 | 2025-09-12 | 杭州图谱光电科技有限公司 | A method or device for quickly displaying video file thumbnails and their information in an embedded system |
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Application publication date: 20170606 |