CN113301370B - System and method for warehousing live course exercise video clips of two teachers - Google Patents

System and method for warehousing live course exercise video clips of two teachers Download PDF

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CN113301370B
CN113301370B CN202110554089.6A CN202110554089A CN113301370B CN 113301370 B CN113301370 B CN 113301370B CN 202110554089 A CN202110554089 A CN 202110554089A CN 113301370 B CN113301370 B CN 113301370B
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video
exercise
teacher
frame
live
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CN113301370A (en
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秦曙光
陈家峰
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Readboy Education Technology Co Ltd
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Readboy Education Technology Co Ltd
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/21Server components or server architectures
    • H04N21/218Source of audio or video content, e.g. local disk arrays
    • H04N21/2187Live feed
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09BEDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B5/00Electrically-operated educational appliances
    • G09B5/08Electrically-operated educational appliances providing for individual presentation of information to a plurality of student stations
    • G09B5/12Electrically-operated educational appliances providing for individual presentation of information to a plurality of student stations different stations being capable of presenting different information simultaneously
    • G09B5/125Electrically-operated educational appliances providing for individual presentation of information to a plurality of student stations different stations being capable of presenting different information simultaneously the stations being mobile
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09BEDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B7/00Electrically-operated teaching apparatus or devices working with questions and answers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/231Content storage operation, e.g. caching movies for short term storage, replicating data over plural servers, prioritizing data for deletion
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/232Content retrieval operation locally within server, e.g. reading video streams from disk arrays
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43Processing 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
    • H04N21/432Content retrieval operation from a local storage medium, e.g. hard-disk
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/80Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/85Assembly of content; Generation of multimedia applications
    • H04N21/854Content authoring
    • H04N21/8547Content authoring involving timestamps for synchronizing content
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D10/00Energy efficient computing, e.g. low power processors, power management or thermal management

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Databases & Information Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Educational Technology (AREA)
  • Educational Administration (AREA)
  • Business, Economics & Management (AREA)
  • Computer Security & Cryptography (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)
  • Electrically Operated Instructional Devices (AREA)

Abstract

The invention discloses a system and a method for warehousing exercise video clips of live-broadcast courses of teachers.A teacher records the starting time of the exercise video clips in real time in the live-broadcast courses by utilizing the system and the method, and can quickly find the positions of exercise videos during post-processing; by utilizing the invention, the exercise video can be extracted as exercise resources, so that students can pointedly watch the exercise video without searching in the recorded video file, thereby being beneficial to improving the learning efficiency; the invention associates the extracted exercise videos with the knowledge points, so that the exercise videos can be efficiently retrieved by students.

Description

System and method for warehousing live-broadcast course exercise video clips of two teachers
Technical Field
The invention relates to the technical field of live courses, in particular to a system and a method for warehousing video clips of double-teacher live course exercises.
Background
With the popularization of computer and internet technologies, the current teaching is no longer limited to the traditional paper teaching, and many schools begin to introduce a tablet or a computer in daily courses for online teaching. At present, live lessons of two teachers in an intelligent classroom are deeply loved by parents and children, and teachers can live on line to give lessons to students.
In the intelligent classroom system, the problem library comprises but is not limited to resources such as test problems, knowledge cards, explanation videos and classical case problems, in the live broadcasting process of two teachers, a teacher often explains a certain knowledge point or an examination point by taking a certain problem as an example, in many cases, after the live broadcasting is completed, students can only warm the problem videos in the playback process, and if the students want to find the problem videos, the students must determine the live broadcasting lessons first and then find corresponding problem explanation segments in the live broadcasting lessons, so that the efficiency is extremely low.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a system and a method for warehousing live course exercise video clips of two teachers.
In order to achieve the purpose, the invention adopts the following technical scheme:
a system for double-teacher live-broadcast curriculum exercise video clip warehousing comprises a teacher end and a server, wherein the teacher end comprises a live-broadcast module, a video recording module, a recorded video watching module and a database;
the database is used for storing recorded video files of live courses and index files corresponding to the recorded video files, the index files are used for recording timestamps of all frames in the recorded video files and whether the frames are exercise frames, the default of the field value of whether the frames are exercise frames is negative, the database is also used for storing exercise video clips intercepted from all the recorded video files, and after a teacher triggers an uploading event, the recorded video files selected by the teacher, the index files of the recorded video files and the intercepted exercise video clips are uploaded to the server;
the live broadcast module is used for teachers to carry out live broadcast of courses;
the video recording module is used for recording the course live video of the teacher, synchronously recording the data of each frame in the index file, and recording the value of the field of whether the frame of the current frame in the index file is the exercise frame as yes when the teacher triggers the exercise recording event; storing the obtained recorded video file and the index file in the database;
the recording video watching module is used for playing a recording video file of a live course, generating thumbnails of all frames with the field value of whether the frame in the index file is the exercise frame being yes and displaying the thumbnails on an interface when a teacher triggers an exercise segment editing event, jumping to the frame to start playing after the teacher clicks and selects a certain thumbnail, modifying the field value of whether the frame of all frames after the frame is the exercise frame to be yes until the teacher triggers and finishes the exercise segment editing event, popping up the interface for the teacher to input the name of the exercise video segment, intercepting the exercise video segment and storing the name input by the teacher in a database; the name of each exercise video clip at least comprises knowledge points related to the exercise video clip.
Furthermore, the system also comprises a student end, wherein the student end comprises a live video watching module and a problem video watching module; the live video watching module is used for students to watch live courses; the exercise video watching module is used for popping up an interface for students to input the knowledge point when the students trigger to watch exercise video events, uploading the knowledge point input by the students to the server, searching in the stored exercise video clips by the server according to the knowledge point, and pushing the searched exercise video clips to the student end; and the method is used for showing the students after receiving the exercise video clips returned by the server, and playing the exercise video clips when the students click and select a certain exercise video clip.
Furthermore, when the recorded video watching module pops up an interface for a teacher to input the names of the exercise video clips, a preset knowledge point map is displayed on the interface, the teacher realizes the input of the knowledge points by clicking the knowledge points on the knowledge point map, and the recorded video watching module generates the names of the exercise video clips containing the knowledge points.
And furthermore, when the students trigger to watch the exercise video events, the exercise video watching module displays a preset knowledge point map on a popped-up interface, and the students realize knowledge point input by clicking knowledge points on the knowledge point map.
The invention also provides a method for utilizing the system, which comprises the following specific processes:
a teacher uses a live broadcast module to carry out live course broadcast at a teacher end, and a video recording module synchronously records live course broadcast video of the teacher and generates a corresponding index file; the students watch live courses through a live video watching module at the student end;
when a teacher starts to explain a problem in the live broadcasting process, triggering a problem recording event, and recording whether the frame of the current frame in the index file is a field value of a problem frame as yes by the video recording module;
after the live broadcast is finished, the video recording module synchronously finishes video recording and stores the recorded video file and the index file in a database;
a teacher plays a recorded video file of a live course through a recorded video watching module at a teacher end, after a problem segment editing event is triggered, the recorded video watching module generates thumbnails of frames with the value of a field of whether the frame in an index file is a problem frame or not and displays the thumbnails on an interface, after the teacher clicks and selects a certain thumbnail, the recorded video watching module jumps to the frame to start playing, the value of the field of whether the frame in the index file of each frame after the frame is the problem frame or not is modified to be yes until the teacher triggers and finishes the problem segment editing event, then an interface is popped up for the teacher to input the name of the problem video segment, and the name of the name input by the teacher is stored in a database after the problem video segment is intercepted; the name of each exercise video clip at least comprises knowledge points related to the exercise video clip;
and after the teacher triggers an uploading event, the database uploads the recording video file selected by the teacher, the index file corresponding to the recording video file and the intercepted exercise video clip to the server.
Furthermore, in the method, when a student wants to watch exercise videos related to a certain knowledge point, the student triggers to watch exercise video events, and the exercise video watching module pops up an interface for the student to input the knowledge point and uploads the knowledge point input by the student to the server; the server searches in the stored exercise video clips according to the knowledge points, and then the searched exercise video clips are pushed to the student end;
the exercise video watching module shows students after receiving exercise video clips returned by the server, and plays the exercise video clips when the students click and select a certain exercise video clip.
The invention has the beneficial effects that:
1. by using the method, the teacher records the starting time of the exercise video clip in real time in the live course, and can quickly find the position of the exercise video during post-processing;
2. by utilizing the invention, the exercise video can be extracted as exercise resources, so that students can pointedly watch the exercise video without searching in the recorded video file, thereby being beneficial to improving the learning efficiency;
3. the invention associates the extracted exercise videos with the knowledge points, so that the exercise videos can be efficiently retrieved by students.
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 system for warehousing live-broadcast lesson exercises video clips for two teachers, which comprises a teacher end and a server, wherein the teacher end comprises a live-broadcast module, a video recording module, a recorded video watching module and a database;
the database is used for storing recorded video files of live courses and index files corresponding to the recorded video files, the index files are used for recording a time stamp of each frame in the recorded video files and whether the frame is a problem frame (true or false), the default of a field value of whether the frame is the problem frame is negative, the database is also used for storing problem video clips intercepted from all the recorded video files, and after a teacher triggers an uploading event, the recorded video files selected by the teacher, the index files of the recorded video files and the intercepted problem video clips are uploaded to the server;
the live broadcast module is used for teachers to carry out live broadcast of courses;
the video recording module is used for recording the course live video of the teacher, synchronously recording the data of each frame in the index file, and recording the value of the field of whether the frame of the current frame in the index file is the exercise frame as yes when the teacher triggers the exercise recording event; storing the obtained recorded video file and the index file in the database;
the recording video watching module is used for playing a recording video file of a live course, generating thumbnails of all frames with the field value of whether the frame in the index file is the exercise frame being yes and displaying the thumbnails on an interface when a teacher triggers an exercise segment editing event, jumping to the frame to start playing after the teacher clicks and selects a certain thumbnail, modifying the field value of whether the frame of all frames after the frame is the exercise frame to be yes until the teacher triggers and finishes the exercise segment editing event, popping up the interface for the teacher to input the name of the exercise video segment, intercepting the exercise video segment and storing the name input by the teacher in a database; the name of each problem video segment at least comprises the knowledge points related to the problem video segment.
It should be noted that triggering an upload event, triggering a problem recording event, triggering a problem segment editing event, triggering an end problem segment editing event, and the like can be implemented by a conventional screen clicking method, a voice instruction, and the like.
Furthermore, the system also comprises a student end, wherein the student end comprises a live video watching module and a problem video watching module; the live video watching module is used for students to watch live courses; the exercise video watching module is used for popping up an interface for students to input the knowledge points when the students trigger to watch exercise video events, uploading the knowledge points input by the students to the server, searching in the stored exercise video clips by the server according to the knowledge points, and pushing the searched exercise video clips to the student end; and the method is used for showing the students after receiving the exercise video clips returned by the server, and playing the exercise video clips when the students click and select a certain exercise video clip.
Further, when the recorded video watching module pops up an interface for a teacher to input the name of the exercise video segment, a preset knowledge point map is displayed on the interface, the teacher clicks knowledge points on the knowledge point map to realize knowledge point input, and the recorded video watching module generates the name of the exercise video segment containing the knowledge points (for example, the name of the exercise video segment can be generated according to the format of nickname of the teacher, the format of the knowledge points and the format of the manufacturing time).
Furthermore, when the student triggers to watch the exercise video event, the exercise video watching module displays a preset knowledge point map on a popup interface, and the student clicks the knowledge points on the knowledge point map to realize knowledge point input.
It should be noted that the knowledge point map can be sequentially expanded according to the hierarchy of the grade, subject, chapter, section and knowledge point for teachers or students to select. The knowledge point input is realized by utilizing the knowledge point spectrum, so that the input text of teachers or students can be standardized, and the matching result of the server is more accurate.
It should be noted that the event of triggering to watch the problem video can be realized by a conventional method of clicking a screen, pressing a physical key, performing a voice command, performing a gesture command, and the like.
Example 2
The present embodiment provides a method using the system described in embodiment 1, which includes the following specific steps:
a teacher uses a live broadcast module to carry out live course broadcast at a teacher end, and a video recording module synchronously records live course broadcast video of the teacher and generates a corresponding index file; the students watch live courses through a live video watching module at the student end;
when a teacher starts to explain the problem in the live broadcasting process, triggering a problem recording event, and recording whether the frame of the current frame in the index file is a field value of the problem frame as yes by the video recording module;
after the live broadcast is finished, the video recording module synchronously finishes video recording and stores the recorded video file and the index file in a database;
a teacher plays a recorded video file of a live course through a recorded video watching module at a teacher end, after a problem segment editing event is triggered, the recorded video watching module generates thumbnails of frames with the value of a field of whether the frame in an index file is a problem frame or not and displays the thumbnails on an interface, after the teacher clicks and selects a certain thumbnail, the recorded video watching module jumps to the frame to start playing, the value of the field of whether the frame in the index file of each frame after the frame is the problem frame or not is modified to be yes until the teacher triggers and finishes the problem segment editing event, then an interface is popped up for the teacher to input the name of the problem video segment, and the name of the name input by the teacher is stored in a database after the problem video segment is intercepted; the name of each exercise video clip at least comprises knowledge points related to the exercise video clip;
and after the teacher triggers an uploading event, the database uploads the recording video file selected by the teacher, the index file corresponding to the recording video file and the intercepted exercise video clip to the server.
Furthermore, when a student wants to watch exercise videos related to a certain knowledge point, the student triggers to watch exercise video events, and the exercise video watching module pops up an interface for the student to input the knowledge point and uploads the knowledge point input by the student to the server; the server searches in the stored exercise video clips according to the knowledge points, and then the searched exercise video clips are pushed to the student end;
and the exercise video watching module displays the exercise video clips returned by the server to students after receiving the exercise video clips, and plays the exercise video clips when the students click and select a certain exercise video clip.
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 (6)

1. A system for warehousing lesson exercises by live broadcasting of two teachers is characterized by comprising a teacher end and a server, wherein the teacher end comprises a live broadcasting module, a video recording module, a recorded video watching module and a database;
the database is used for storing recorded video files of live courses and index files corresponding to the recorded video files, the index files are used for recording timestamps of all frames in the recorded video files and whether the frames are exercise frames, the default of the field value of whether the frames are exercise frames is negative, the database is also used for storing exercise video clips intercepted from all the recorded video files, and after a teacher triggers an uploading event, the recorded video files selected by the teacher, the index files of the recorded video files and the intercepted exercise video clips are uploaded to the server;
the live broadcast module is used for teachers to carry out live broadcast of courses;
the video recording module is used for recording the course live video of the teacher, synchronously recording the data of each frame in the index file, and recording the value of the field of whether the frame of the current frame in the index file is the exercise frame as yes when the teacher triggers the exercise recording event; storing the obtained recorded video file and the index file in the database;
the recording video watching module is used for playing a recording video file of a live course, generating thumbnails of all frames with the field value of whether the frame in the index file is the exercise frame being yes and displaying the thumbnails on an interface when a teacher triggers an exercise segment editing event, jumping to the frame to start playing after the teacher clicks and selects a certain thumbnail, modifying the field value of whether the frame of all frames after the frame is the exercise frame to be yes until the teacher triggers and finishes the exercise segment editing event, popping up the interface for the teacher to input the name of the exercise video segment, intercepting the exercise video segment and storing the name input by the teacher in a database; the name of each problem video segment at least comprises the knowledge points related to the problem video segment.
2. The system of claim 1, further comprising a student end, wherein the student end comprises a live video viewing module and a problem video viewing module; the live video watching module is used for students to watch live courses; the exercise video watching module is used for popping up an interface for students to input the knowledge points when the students trigger to watch exercise video events, uploading the knowledge points input by the students to the server, searching in the stored exercise video clips by the server according to the knowledge points, and pushing the searched exercise video clips to the student end; and the method is used for showing the students after receiving the exercise video clips returned by the server, and playing the exercise video clips when the students click and select a certain exercise video clip.
3. The system of claim 2, wherein the recorded video viewing module pops up an interface for the teacher to display a preset knowledge point map on the interface when inputting the names of the exercise video segments, the teacher clicks on a knowledge point on the knowledge point map to input the knowledge point, and the recorded video viewing module generates the names of the exercise video segments containing the knowledge point.
4. The system of claim 3, wherein the problem video viewing module displays a preset knowledge point map on a pop-up interface when the student triggers viewing of the problem video event, and the student inputs knowledge points by clicking on knowledge points on the knowledge point map.
5. A method using the system of any one of claims 1-4, characterized by the following steps:
a teacher uses a live broadcast module to carry out live course broadcast at a teacher end, and a video recording module synchronously records live course broadcast video of the teacher and generates a corresponding index file; the students watch live courses through a live video watching module at the student end;
when a teacher starts to explain the problem in the live broadcasting process, triggering a problem recording event, and recording whether the frame of the current frame in the index file is a field value of the problem frame as yes by the video recording module;
after the live broadcast is finished, the video recording module synchronously finishes video recording and stores the recorded video file and the index file in a database;
a teacher plays a recorded video file of a live course through a recorded video watching module at a teacher end, after a problem segment editing event is triggered, the recorded video watching module generates thumbnails of frames with the value of a field of whether the frame in an index file is a problem frame or not and displays the thumbnails on an interface, after the teacher clicks and selects a certain thumbnail, the recorded video watching module jumps to the frame to start playing, the value of the field of whether the frame in the index file of each frame after the frame is the problem frame or not is modified to be yes until the teacher triggers and finishes the problem segment editing event, then an interface is popped up for the teacher to input the name of the problem video segment, and the name of the name input by the teacher is stored in a database after the problem video segment is intercepted; the name of each exercise video clip at least comprises knowledge points related to the exercise video clip;
and after the teacher triggers an uploading event, the database uploads the recording video file selected by the teacher, the index file corresponding to the recording video file and the intercepted exercise video clip to the server.
6. The method of claim 5, wherein when a student wants to watch a problem video related to a knowledge point, the student triggers to watch the problem video event, and the problem video watching module pops up an interface for the student to input the knowledge point and uploads the knowledge point input by the student to the server; the server searches in the stored exercise video clips according to the knowledge points, and then the searched exercise video clips are pushed to the student end;
the exercise video watching module shows students after receiving exercise video clips returned by the server, and plays the exercise video clips when the students click and select a certain exercise video clip.
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