CN114845155A - Online video processing method and system for screen recording and answering - Google Patents
Online video processing method and system for screen recording and answering Download PDFInfo
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- 239000012634 fragment Substances 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 13
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- 238000011156 evaluation Methods 0.000 description 2
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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
- H04N21/433—Content storage operation, e.g. storage operation in response to a pause request, caching operations
- H04N21/4334—Recording operations
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/451—Execution arrangements for user interfaces
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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
- H04N21/437—Interfacing the upstream path of the transmission network, e.g. for transmitting client requests to a VOD server
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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
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs
- H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
- H04N21/440236—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display by media transcoding, e.g. video is transformed into a slideshow of still pictures, audio is converted into text
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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
- H04N21/47—End-user applications
- H04N21/472—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content
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- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/845—Structuring of content, e.g. decomposing content into time segments
- H04N21/8456—Structuring of content, e.g. decomposing content into time segments by decomposing the content in the time domain, e.g. in time segments
Abstract
The application discloses an online video processing method and system for screen recording and question answering, which relate to the video processing technology and comprise the following steps: displaying a screen recording interface in a screen recording mode, wherein the screen recording interface comprises an operation bar for selecting student works; acquiring a selection instruction aiming at the operation bar, and determining the selected student works; recording the opening time and the closing time of the selected student works; transcoding the video recorded with the screen, and performing live broadcasting; and uploading the video obtained by screen recording to a back-end server, and uploading the opening time and the closing time to the corresponding student works. Can fix a position fast through this application and record the screen film section of recording to student's explanation in the screen, promote teachers and students' efficiency.
Description
Technical Field
The application relates to a video processing technology, in particular to an online video processing method and system for screen recording and question answering.
Background
In the on-line drawing teaching process, the most important link is to comment on the paintings of the students. The number of students in each class is large, under the condition, after a class is finished, a large number of students submit jobs, and the lecturer records and explains the works of each student to guide the outstanding points, defects and the like in the works of the students; this interaction pattern needs to be carried in video form.
There are a lot of problems in current record screen, live instrument: assuming that 200 students exist in a class, under the condition that a lecturer independently records the screen of each student, the lecturer needs to independently operate a screen recording tool to repeatedly operate 200 jobs, and the process is complicated, repeated and inefficient; meanwhile, the lecturer needs to transmit 200 videos to different places so as to be sent to the student for manual watching, if the video file is uploaded to the server, the lecturer needs to upload 200 times, and the lecturer and the student are inefficient and time-consuming; because the video playing time is long, it is a time-consuming and labor-consuming matter for the students to find the relevant video clips from the long video; when the lecturer independently uses the tool to transmit the screen file, some fields are wrongly filled due to problems in use, so that the correct association of operation and question answering can not be caused, and the use experience of the student is influenced.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides an online video processing method and system for screen recording and answering, so as to realize rapid positioning of screen recording fragments corresponding to student works.
On one hand, the embodiment of the application provides an online video processing method for screen recording and answering, which comprises the following steps:
displaying a screen recording interface in a screen recording mode, wherein the screen recording interface comprises an operation bar for selecting student works;
acquiring a selection instruction aiming at the operation bar, and determining the selected student works;
recording the opening time and the closing time of the selected student works;
transcoding the video recorded with the screen, and performing live broadcasting;
and uploading the video obtained by screen recording to a back-end server, and uploading the opening time and the closing time to the corresponding student works.
In some embodiments, further comprising the steps of:
the method comprises the steps that a back-end server obtains a screen recording obtaining request, wherein the request comprises screen recording information and information corresponding to student works;
the back-end server determines the opening time and the closing time corresponding to the student works according to the information corresponding to the student works, determines a screen recording file according to screen recording information, and then intercepts a corresponding screen recording fragment from the screen recording file according to the opening time and the closing time so as to respond to the screen recording acquisition request.
In some embodiments, further comprising the steps of:
when entering a screen recording mode, recording the starting time of screen recording;
the intercepting of the corresponding screen recording segment from the screen recording file according to the opening time and the closing time specifically includes:
and determining to intercept the corresponding screen recording fragment from the screen recording file according to the offset of the opening time relative to the starting time and the offset of the closing time relative to the closing time.
In some embodiments, the transcoding processing is performed on the video recorded on the screen, and the live broadcasting is performed specifically as follows:
transcoding the recorded screen into a live streaming file in an HLS format through ffmpeg, wherein the live streaming file comprises a plurality of fragment files;
and sending the fragment file to a live broadcast server for live broadcast every time the fragment file is obtained.
In some embodiments, uploading the video obtained by screen recording to a back-end server specifically includes:
determining the state of a local storage fragment file;
parsing the m3u8 playlist file to determine whether to create an explanation;
if not, establishing an explanation;
and uploading the fragment file until the uploading of the recorded screen is finished.
In some embodiments, the screen recording interface includes a work presentation area;
the work presentation area and the operation bar are both configured to be movable or scalable.
In some embodiments, further comprising the steps of:
selecting class information, and loading options in the operation bar from a background server according to the class information;
associating the option to a location where the student work is stored.
In some embodiments, further comprising the steps of:
and deleting the screen recording content stored in the background server according to the input instruction.
On the other hand, the embodiment of the application discloses an online video processing system for screen recording and answering, which comprises:
at least one memory for storing a program;
and the at least one processor is used for loading the program to execute the online video processing method for screen recording and answering.
On the other hand, the application discloses an online video processing system for screen recording and answering, including:
the background server is used for storing the screen recording file and returning the screen recording fragment according to the request;
and the client is used for executing the online video processing method for screen recording and answering.
According to the scheme of the embodiment of the application, the screen recording is associated with the selection operation bar of the student works, and the time of opening and closing the student works is recorded in the screen recording process, so that subsequent students can conveniently position the content position of the screen recording for evaluation of the student works according to own information; through this above-mentioned embodiment, the teacher of imparting knowledge to students can once accomplish video recording, need not manual classification and uploads, and the work evaluation that the student corresponds also can be automatically through the time correlation that the file was opened, and the treatment effeciency is high, and is more convenient.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a flowchart of an online video processing method for screen recording and answering according to an embodiment of the present application;
fig. 2 is a flowchart of an explanation screen provided in an embodiment of the present application;
FIG. 3 is a flowchart of a file upload provided by an embodiment of the present application;
fig. 4 is a schematic diagram of a screen recording interface provided in an embodiment of the present application.
Detailed Description
In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be clearly and completely described below through embodiments with reference to the accompanying drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present invention, the meaning of a plurality is one or more, the meaning of a plurality is two or more, and the above, below, exceeding, etc. are understood as excluding the present numbers, and the above, below, within, etc. are understood as including the present numbers. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly defined, terms such as set, etc. should be broadly construed, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the detailed contents of the technical solutions.
In the description of the present invention, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., means that a particular feature or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The noun explains:
HLS is called HTTP Live Streaming entirely and is a Streaming media network transmission protocol based on HTTP. Here acting as a coding technique.
FLV is short for FLASH VIDEO, and the FLV streaming media format is a VIDEO format developed along with the promotion of FLASH MX.
Object Storage Service, OSS for short, is a cloud Storage Service for storing data.
MEDIASTEAM video read-write stream, a read-write data method.
Rtmp-Real Time Messaging Protocol (Real Time Messaging Protocol) acronym, used herein for video streaming Protocol.
M3u8 is an index file, which is used for resolving the corresponding video network address placed on the server by using the M3u8 file so as to realize online playing; and playing the video file in blocks.
Referring to fig. 1, fig. 2, fig. 3, and fig. 4, an embodiment of the present application provides an online video processing method for screen recording and answering, including the following steps:
and S1, recording the start time of screen recording in the screen recording mode, and displaying a screen recording interface which comprises an operation bar for selecting student works. The purpose of recording the screen recording time is to store relevant data when establishing screen recording storage, and simultaneously to locate the screen recording segment by utilizing the time and the opening time and the closing time of the student works. In the operation bar in this embodiment, as shown in fig. 4, the left side is an area for displaying works, and the right side is an operation bar through which the works of students can be selected. The student work is associated with a related action bar.
It is to be understood that, when entering the screen recording mode, the class information needs to be selected, and the options in the operation bar are loaded from the background server according to the class information; associating the option to a location where the student work is stored. In this way, the association between the student work and the relevant time node can be known.
And S2, acquiring a selection instruction aiming at the operation bar, and determining the selected student works.
In this embodiment, the user may find an option for a student work and then double click open. Or by a right-click menu selection.
And S3, recording the opening time and the closing time of the selected student works.
The opening time is related to the time of opening the works through the operation bar of the student works by the user, and can be recorded as the time of opening the display window of the student works; the closing time is related to the user closing the presentation window of the student work and can be recorded as the time when the student work window is closed.
And S4, transcoding the video recorded with the screen, and performing live broadcasting.
Referring to fig. 2, specifically, the present step includes:
transcoding the recorded screen into a live streaming file in an HLS format through ffmpeg, wherein the live streaming file comprises a plurality of fragment files;
and sending the fragment file to a live broadcast server for live broadcast every time the fragment file is obtained.
Specifically, when a file recorded on a screen at a client generates mkv an original file, the file is synchronously transcoded into a live streaming file in an HLS format through ffmpeg, the HLS file format has the composition characteristic of supporting live broadcasting, the transcoded file is a segmented file (ts file) of one video, the video can be played only by a small segmented file, the whole video can be played without waiting for transcoding completion, the ts file can be generated while recording the screen through the transcoding in the HLS format of ffmpeg, the ts is asynchronously uploaded to a live broadcasting server, only part of the ts file is uploaded to a video server, the state is synchronized to the rear end, a student can directly watch the explanation, and the whole process is based on a streaming processing mode and can be carried out while generating.
And S5, uploading the video obtained by screen recording to a back-end server, and uploading the opening time and the closing time to the corresponding student works.
Referring to fig. 3, uploading a video obtained by screen recording to a back-end server specifically includes:
and determining the state of the local storage fragment file.
The m3u8 playlist file is parsed to determine whether to create an explanation.
If not, the explanation is created.
And uploading the fragment file until the uploading of the recorded screen is finished.
In some embodiments, it may be understood that one explanation is created for each segment, or it may be understood that one explanation is created for the whole course.
In some embodiments, before step S1, the following steps are further included:
and the back-end server acquires a screen recording acquisition request, wherein the request comprises screen recording information and information corresponding to the student works. A user can request the background server to acquire screen recording fragments through the client, wherein the corresponding explanation screen recording fragments need to be selected, then information is provided for students, and the corresponding works can be associated through the information of the students.
The back-end server determines the opening time and the closing time corresponding to the student works according to the information corresponding to the student works, determines a screen recording file according to screen recording information, and then intercepts a corresponding screen recording fragment from the screen recording file according to the opening time and the closing time so as to respond to the screen recording acquisition request.
The intercepting of the corresponding screen recording segment from the screen recording file according to the opening time and the closing time specifically includes:
and determining to intercept the corresponding screen recording segment from the screen recording file according to the offset of the opening time relative to the starting time and the offset of the closing time relative to the closing time. For example, the recording time is 11 o 'clock 30 min 10 sec, the time for starting to evaluate the student works is 11 o' clock 30 min 50 sec, the offset of the comment segment is 40 sec, and for the complete screen recording, the time is relative or not absolute, so that the screen recording segment is more suitable to be determined by means of time offset.
It should be understood that, by means of this embodiment, the starting and ending positions of the relevant explanation segment can be located by making an offset according to the screen recording time of the teacher's lecture and the opening time and closing time of the relevant work.
In some embodiments, the screen recording interface includes a work presentation area;
the work presentation area and the operation bar are both configured to be movable or scalable.
In some embodiments, further comprising the steps of:
and deleting the screen recording content stored in the background server according to the input instruction. In addition, based on the input instruction of the user, the user can also adjust the time for explaining the student works in the background.
With the above embodiment, at least the following effects can be achieved: the instructor can efficiently and automatically associate recorded and broadcast live video with the class; the system can automatically associate the content explained by the instructor to the specific frame of the recorded and broadcast live video; the student can locate one key in a specific frame in a long video; the instructor can efficiently upload videos; the lecturer can conveniently carry out live broadcast and recorded broadcast management at the same time, so that the student can watch the teaching content through live broadcast.
The embodiment of the application discloses an online video processing system for recording screen and answering questions, includes:
at least one memory for storing a program;
and the at least one processor is used for loading the program to execute the online video processing method for screen recording and answering.
The application discloses online video processing system for recording screen and answering questions, include:
the background server is used for storing the screen recording file and returning the screen recording fragment according to the request;
and the client is used for executing the online video processing method for screen recording and answering.
The integrated units described in this application may be stored in a computer-readable storage medium if they are implemented in the form of software functional units and sold or used as separate products. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present application and the technical principles employed. It will be understood by those skilled in the art that the present application is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the application. Therefore, although the present application has been described in more detail with reference to the above embodiments, the present application is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present application, and the scope of the present application is determined by the scope of the appended claims.
Claims (10)
1. An on-line video processing method for screen recording and answering is characterized by comprising the following steps:
displaying a screen recording interface in a screen recording mode, wherein the screen recording interface comprises an operation bar for selecting student works;
acquiring a selection instruction aiming at the operation bar, and determining the selected student works;
recording the opening time and the closing time of the selected student works;
transcoding the video recorded with the screen, and performing live broadcasting;
and uploading the video obtained by screen recording to a back-end server, and uploading the opening time and the closing time to the corresponding student works.
2. The on-line video processing method for screen-recording answering according to claim 1, further comprising the steps of:
the method comprises the steps that a back-end server obtains a screen recording obtaining request, wherein the request comprises screen recording information and information corresponding to student works;
the back-end server determines the opening time and the closing time corresponding to the student works according to the information corresponding to the student works, determines a screen recording file according to screen recording information, and then intercepts a corresponding screen recording fragment from the screen recording file according to the opening time and the closing time so as to respond to the screen recording acquisition request.
3. The on-line video processing method for screen recording and answering according to claim 2, further comprising the steps of:
when entering a screen recording mode, recording the starting time of screen recording;
the intercepting of the corresponding screen recording segment from the screen recording file according to the opening time and the closing time specifically includes:
and determining to intercept the corresponding screen recording segment from the screen recording file according to the offset of the opening time relative to the starting time and the offset of the closing time relative to the closing time.
4. The method for processing the online video for screen recording and answering according to claim 1, wherein the screen recording video is transcoded and live-broadcasted, and specifically comprises:
transcoding the recorded screen into a live streaming file in an HLS format through ffmpeg, wherein the live streaming file comprises a plurality of fragment files;
and sending the fragment file to a live broadcast server for live broadcast every time the fragment file is obtained.
5. The method for processing the online video for screen recording and answering according to claim 1, wherein uploading the video obtained by screen recording to a back-end server specifically comprises:
determining the state of a local storage fragment file;
parsing the m3u8 playlist file to determine whether to create an explanation;
if not, establishing an explanation;
and uploading the fragment file until the uploading of the recorded screen is finished.
6. The on-line video processing method for screen recording and answering according to claim 1, wherein the screen recording interface comprises a work display area; the work presentation area and the operation bar are each configured to be movable or scalable.
7. The on-line video processing method for screen recording and answering according to claim 1, further comprising the steps of:
selecting class information, and loading options in the operation bar from a background server according to the class information;
associating the option to a location where the student work is stored.
8. The on-line video processing method for screen recording and answering according to claim 1, further comprising the steps of:
and deleting the screen recording content stored in the background server according to the input instruction.
9. An online video processing system for screen recording and answering, comprising:
at least one memory for storing a program;
at least one processor configured to load the program to perform the method for on-line video processing for screen-recording answering according to any one of claims 1 to 8.
10. An online video processing system for screen recording and answering, comprising:
the background server is used for storing the screen recording file and returning the screen recording fragment according to the request;
client for performing the method of on-line video processing for screen recording and answering according to any one of claims 1 to 8.
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| CN113301371A (en) * | 2021-05-20 | 2021-08-24 | 读书郎教育科技有限公司 | System and method for associating video clips of live course exercises with knowledge points |
| CN113497968A (en) * | 2021-07-01 | 2021-10-12 | 读书郎教育科技有限公司 | Method for acquiring dictation content |
| CN114155755A (en) * | 2021-11-03 | 2022-03-08 | 重庆科创职业学院 | System for realizing follow-up teaching by using internet and realization method thereof |
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