CN113014949A - Student privacy protection system and method for smart classroom course playback - Google Patents
Student privacy protection system and method for smart classroom course playback Download PDFInfo
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- CN113014949A CN113014949A CN202110260859.6A CN202110260859A CN113014949A CN 113014949 A CN113014949 A CN 113014949A CN 202110260859 A CN202110260859 A CN 202110260859A CN 113014949 A CN113014949 A CN 113014949A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/21—Server components or server architectures
- H04N21/218—Source of audio or video content, e.g. local disk arrays
- H04N21/2187—Live feed
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/432—Content retrieval operation from a local storage medium, e.g. hard-disk
- H04N21/4325—Content retrieval operation from a local storage medium, e.g. hard-disk by playing back content from the storage medium
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/433—Content storage operation, e.g. storage operation in response to a pause request, caching operations
- H04N21/4334—Recording operations
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/85—Assembly of content; Generation of multimedia applications
- H04N21/854—Content authoring
- H04N21/8547—Content authoring involving timestamps for synchronizing content
Abstract
The invention discloses a student privacy protection system and a student privacy protection method for intelligent class course playback, wherein the system comprises a video file storage module, a recorded video file processing module and a video playback module, wherein the video file storage module is used for establishing two folders for each intelligent class course live broadcast, one folder is used for storing recorded video files for the intelligent class course live broadcast, and the other folder is used for storing index data of the recorded video files; the video playback module is used for acquiring the corresponding recorded video file subjected to the privacy processing from the background server and playing the recorded video file to the user according to the course to be played back by the user. According to the method and the device, privacy processing can be rapidly and simply carried out on the recorded video file of the live course in the intelligent classroom, and privacy disclosure of students is avoided.
Description
Technical Field
The invention relates to the technical field of intelligent classes, in particular to a student privacy protection system and method for intelligent class course playback.
Background
The education gradually becomes hot in the current on-line, and the teacher can give lessons in the live of long-range high in the clouds, and the student also can enjoy very good education resources at home. Usually, can all increase even interactive activities such as wheat for increasing live interactive in-process live broadcasting, even the wheat in-process, can show student's head portrait with little rectangle video window's mode and preset the region at teacher's live interface, simultaneously, the teacher has directly broadcast the course after, can preserve live teaching process, and the video window when the student links the wheat also can be preserved and download, sees the playback in-process at other people, also can see student's even wheat video picture, has the hidden danger that student's privacy leaks.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a student privacy protection system and method for intelligent classroom course playback.
In order to achieve the purpose, the invention adopts the following technical scheme:
a student privacy protection system for smart classroom course playback, comprising:
a video file storage module: the intelligent classroom course live broadcast system is used for establishing two folders for each intelligent classroom course live broadcast, wherein one folder is used for storing recorded video files for the intelligent classroom course live broadcast, and the other folder is used for storing index data of the recorded video files; the index data comprises data including a timestamp and a microphone connecting window information set for recording each frame in a video file, and the data of the microphone connecting window information set comprises a window ID; the method comprises the steps that the video window position of a microphone is preset in a teacher video interface of live curriculum lesson, the video window position comprises one or more video windows, and each video window is correspondingly assigned with a window ID;
the video recording file processing module: the method comprises the steps that in the course of live broadcast of an intelligent classroom, initial information of a microphone connecting event is recorded when the microphone connecting event is triggered, and end information of the microphone connecting event is recorded when the microphone connecting event is ended, wherein the initial information of the microphone connecting event at least comprises an initial timestamp and a window ID of the microphone connecting event, and the end information of the microphone connecting event at least comprises an end timestamp and a window ID of the microphone connecting event; the data attribute updating module is used for updating the data attribute of the microphone connecting window information set of each frame in the range of the starting timestamp and the ending timestamp of the microphone connecting event in the index data according to the starting information and the ending information of the microphone connecting event; the intelligent classroom course live broadcast system comprises a background server, a video file, a window ID and a window ID, wherein the background server is used for traversing each frame of data attribute in a microphone connecting window information set in index data corresponding to a recorded video file after the course live broadcast of an intelligent classroom is finished, replacing a video window position corresponding to the window ID in the frame data of the recorded video file with a preset picture if the attribute is not null, and finally obtaining the recorded video file subjected to privacy processing and uploading the recorded video file to the background server of the intelligent classroom;
the video playback module: and the video recording device is used for acquiring the corresponding recording video file subjected to privacy processing from the background server according to the course to be played back by the user and playing the recording video file to the user.
Further, the data of the microphone connecting window information set also comprises a window type, wherein the window type is a question asking type or a question answering type; and setting different preset pictures for different window types, and replacing the video window position corresponding to the window ID in the frame data of the recorded video file with the preset picture according to the window type.
The invention also provides a student privacy protection method for intelligent classroom course playback by using the system, which comprises the following specific processes:
s1, after the smart classroom course live broadcast starts, the video file storage module establishes two folders for the smart classroom course live broadcast, wherein one folder stores a recorded video file of the smart classroom course live broadcast, and the other folder stores index data corresponding to the recorded video file;
s2, recording videos of the current intelligent classroom course live broadcast, recording initial information of a microphone connecting event by a recording video file processing module when the microphone connecting event is triggered in the live broadcast process, recording end information of the microphone connecting event after the microphone connecting event is ended, and updating the attribute of data of a microphone connecting window information set of each frame in the range of an initial timestamp and an end timestamp of the microphone connecting event in index data according to the initial information and the end information of the microphone connecting event;
s3, after the live broadcast of the smart classroom course is finished, the recorded video file processing module traverses whether the attribute of the data of the microphone connecting window information set of each frame is empty or not in the index data corresponding to the recorded video file, if not, the video window position corresponding to the window ID in the frame data of the recorded video file is replaced by a preset picture, and finally the recorded video file subjected to privacy processing is obtained and uploaded to a background server of the smart classroom;
and S4, when the user triggers the playback of the intelligent classroom course, acquiring the corresponding privacy-processed recorded video file from the background server according to the course to be played back by the user, and playing the video file to the user.
Further, in the above method, the data of the connected microphone window information set further includes a window type, where the window type is a question type or an answer question type; in step S3, different preset pictures are set for different window types, and when the video window position corresponding to the window ID in the frame data of the recorded video file is replaced with a preset picture, the corresponding preset picture is replaced according to the window type.
The invention has the beneficial effects that: according to the method and the device, privacy processing can be rapidly and simply carried out on the recorded video file of the live course in the intelligent classroom, and privacy disclosure of students is avoided.
Detailed Description
The present invention will be further described below, and it should be noted that the present embodiment is based on the technical solution, and a detailed implementation manner and a specific operation process are provided, but the protection scope of the present invention is not limited to the present embodiment.
Example 1
The embodiment provides a student privacy protection system of wisdom classroom course playback, includes:
a video file storage module: the intelligent classroom course live broadcast system is used for establishing two folders for each intelligent classroom course live broadcast, wherein one folder is used for storing recorded video files for the intelligent classroom course live broadcast, and the other folder is used for storing index data of the recorded video files; the index data comprises data of each frame in the recorded video file, including a timestamp, whether the frame is a key frame, an offset (an offset between a head address of a current frame and a starting position of the recorded video file), a frame size and a microphone connecting window information set, wherein the microphone connecting window information set comprises a window ID and a window type (question asking, question answering and other types); the intelligent classroom presets a video window position connected with the microphone on a teacher video interface of live curriculum, the video window position comprises one or more video windows (a plurality of connections), and each video window is correspondingly assigned with a window ID.
In the present embodiment, in the index data, the attributes of each data are separated by a preset special symbol interval, for example:
@ 1609149280287 (time stamp) @ true (whether key frame) # #2345632 (offset) & &34567890 (frame size) @ 9527(1) (window id), 8083(2) (window type) ])
It should be noted that the fields of the course ID do not play a role in the search document for privacy protection, and therefore, may not be stored in the index document.
The video recording file processing module: the method comprises the steps that in the course live broadcast process of an intelligent classroom, initial information of a microphone connecting event is recorded when the microphone connecting event is triggered, and end information of the microphone connecting event is recorded when the microphone connecting event is ended, wherein the initial information of the microphone connecting event at least comprises information (such as a current microphone connecting event initial timestamp and a window ID) and the like (and can also comprise a course ID, a microphone connecting ID and the like), and the end information of the microphone connecting event at least comprises information (such as a current microphone connecting event end timestamp and a window ID and the like) (and can also comprise a course ID, a microphone connecting ID and the like); the data attribute updating module is used for updating the data attribute of the microphone connecting window information set of each frame in the range of the starting timestamp and the ending timestamp of the microphone connecting event in the index data according to the starting information and the ending information of the microphone connecting event; and after the live broadcast of the intelligent classroom course is finished, whether the attribute of data in the microphone connecting window information set traversing each frame in the index data corresponding to the recorded video file is empty or not is judged, if the attribute is not empty, the video window position corresponding to the window ID in the frame data of the recorded video file is replaced by a preset microphone connecting picture corresponding to the window type, and finally the recorded video file subjected to privacy processing is obtained and uploaded to a background server of the intelligent classroom.
The video playback module: and the video recording device is used for acquiring the corresponding recording video file subjected to privacy processing from the background server according to the course to be played back by the user and playing the recording video file to the user.
Example 2
A student privacy protection method for intelligent classroom course playback comprises the following specific processes:
s1, after the smart classroom course live broadcast starts, the video file storage module establishes two folders for the smart classroom course live broadcast, wherein one folder stores a recorded video file of the smart classroom course live broadcast, and the other folder stores index data corresponding to the recorded video file;
s2, recording videos of the current intelligent classroom course live broadcast, recording initial information of a microphone connecting event by a recording video file processing module when the microphone connecting event is triggered in the live broadcast process, recording end information of the microphone connecting event after the microphone connecting event is ended, and updating the attribute of data of a microphone connecting window information set of each frame in the range of an initial timestamp and an end timestamp of the microphone connecting event in index data according to the initial information and the end information of the microphone connecting event;
it should be noted that the triggering of the microphone connecting event in the live broadcasting process means that in the live broadcasting teaching process of the intelligent classroom, a student requests to perform video call connection with a teacher, and performs operations including but not limited to answering a question and proposing a question to the teacher, and the triggering of the microphone connecting event is performed after the video call connection is successful.
S3, after the live broadcast of the smart classroom course is finished, the recorded video file processing module traverses whether the attribute of the data of the microphone connecting window information set of each frame is empty or not in the index data corresponding to the recorded video file, if not, the video window position corresponding to the window ID in the frame data of the recorded video file is replaced by a preset microphone connecting picture corresponding to the window type, and finally the recorded video file subjected to privacy processing is obtained and uploaded to a background server of the smart classroom;
for example, if the data attribute of the continuous microphone window information set of a certain frame is not empty, and the attribute of the window type in the continuous microphone window information set answers the question window, the position of the video window corresponding to the window ID on the frame data is replaced by covering the preset continuous microphone picture for answering the question.
And S4, when the user triggers the playback of the intelligent classroom course, acquiring the corresponding privacy-processed recorded video file from the background server according to the course to be played back by the user, and playing the video file to the user.
Various corresponding changes and modifications can be made by those skilled in the art based on the above technical solutions and concepts, and all such changes and modifications should be included in the protection scope of the present invention.
Claims (4)
1. The utility model provides a student privacy protection system of wisdom classroom course playback which characterized in that includes:
a video file storage module: the intelligent classroom course live broadcast system is used for establishing two folders for each intelligent classroom course live broadcast, wherein one folder is used for storing recorded video files for the intelligent classroom course live broadcast, and the other folder is used for storing index data of the recorded video files; the index data comprises data including a timestamp and a microphone connecting window information set for recording each frame in a video file, and the data of the microphone connecting window information set comprises a window ID; the method comprises the steps that the video window position of a microphone is preset in a teacher video interface of live curriculum lesson, the video window position comprises one or more video windows, and each video window is correspondingly assigned with a window ID;
the video recording file processing module: the method comprises the steps that in the course of live broadcast of an intelligent classroom, initial information of a microphone connecting event is recorded when the microphone connecting event is triggered, and end information of the microphone connecting event is recorded when the microphone connecting event is ended, wherein the initial information of the microphone connecting event at least comprises an initial timestamp and a window ID of the microphone connecting event, and the end information of the microphone connecting event at least comprises an end timestamp and a window ID of the microphone connecting event; the data attribute updating module is used for updating the data attribute of the microphone connecting window information set of each frame in the range of the starting timestamp and the ending timestamp of the microphone connecting event in the index data according to the starting information and the ending information of the microphone connecting event; the intelligent classroom course live broadcast system comprises a background server, a video file, a window ID and a window ID, wherein the background server is used for traversing each frame of data attribute in a microphone connecting window information set in index data corresponding to a recorded video file after the course live broadcast of an intelligent classroom is finished, replacing a video window position corresponding to the window ID in the frame data of the recorded video file with a preset picture if the attribute is not null, and finally obtaining the recorded video file subjected to privacy processing and uploading the recorded video file to the background server of the intelligent classroom;
the video playback module: and the video recording device is used for acquiring the corresponding recording video file subjected to privacy processing from the background server according to the course to be played back by the user and playing the recording video file to the user.
2. The system according to claim 1, wherein the data of the Lianmai window information set further includes a window type, and the window type is a question type or an answer type; and setting different preset pictures for different window types, and replacing the video window position corresponding to the window ID in the frame data of the recorded video file with the preset picture according to the window type.
3. A method for protecting privacy of students using smart class lesson playback of the system of any one of claims 1-2, comprising the steps of:
s1, after the smart classroom course live broadcast starts, the video file storage module establishes two folders for the smart classroom course live broadcast, wherein one folder stores a recorded video file of the smart classroom course live broadcast, and the other folder stores index data corresponding to the recorded video file;
s2, recording videos of the current intelligent classroom course live broadcast, recording initial information of a microphone connecting event by a recording video file processing module when the microphone connecting event is triggered in the live broadcast process, recording end information of the microphone connecting event after the microphone connecting event is ended, and updating the attribute of data of a microphone connecting window information set of each frame in the range of an initial timestamp and an end timestamp of the microphone connecting event in index data according to the initial information and the end information of the microphone connecting event;
s3, after the live broadcast of the smart classroom course is finished, the recorded video file processing module traverses whether the attribute of the data of the microphone connecting window information set of each frame is empty or not in the index data corresponding to the recorded video file, if not, the video window position corresponding to the window ID in the frame data of the recorded video file is replaced by a preset picture, and finally the recorded video file subjected to privacy processing is obtained and uploaded to a background server of the smart classroom;
and S4, when the user triggers the playback of the intelligent classroom course, acquiring the corresponding privacy-processed recorded video file from the background server according to the course to be played back by the user, and playing the video file to the user.
4. The method according to claim 3, wherein the data of the Lianmai window information set further includes a window type, and the window type is a question type or an answer type; in step S3, different preset pictures are set for different window types, and when the video window position corresponding to the window ID in the frame data of the recorded video file is replaced with a preset picture, the corresponding preset picture is replaced according to the window type.
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Cited By (1)
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