CN109862375B - Cloud recording and broadcasting system - Google Patents
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Abstract
The invention provides a cloud recording and broadcasting system, which comprises: the audio and video terminal is used for receiving the first audio information, the first video information and the courseware information, extracting a first keyword from the first audio information, recording time position information of the first keyword, labeling the first keyword in the first video data, and generating first target information; a first network device; the recording and broadcasting platform is used for receiving the first target information in real time, decoding the first target information, generating first audio information, first video information marked with a first keyword and courseware information, and then synthesizing the first audio information, the first video information marked with the first keyword and the courseware information to generate a first target information stream; when a live broadcast request message sent by a user terminal is received, a first target information stream is sent to the user terminal; or when receiving the request message of the on-demand sent by the user terminal, sending the first target information stream to the user terminal. Therefore, the data processing burden of the recording and broadcasting platform is reduced.
Description
Technical Field
The invention relates to the technical field of data processing, in particular to a cloud recording and broadcasting system.
Background
Technological progress and social civilization are continuously creating a great deal of knowledge, and higher requirements are put on the learning ability of modern people, so that one person is on the premises of society and obtains better development, and must learn enough technological culture knowledge.
In recent years, technologies such as computers, networks and multimedia are increasingly applied to the education field, and the gradual popularization of education informatization is promoted. The informatization of education is to use the computer multimedia network information technology to promote the comprehensive reform of education, so that the informatization is suitable for the new requirements of the informatization society on education development, and the informatization education method has great significance in implementing quality education.
The traditional teaching mode is that a teacher is responsible for teaching in one class, and in the same time period, the teacher cannot synchronously guide teaching for students in other classes. But also limit the sharing of high-quality teacher resources, and can not lead more students to enjoy the education of high-quality teachers.
In recent years, with the rapid development of digital learning technology, universities, governments and enterprises are greatly promoting online learning education modes, which provide a better network learning platform for the masses, but with the continuous development of online learning, the problems in the online learning mode are more and more remarkable, such as unclear network video, asynchronous voice and picture, large data processing capacity and the like.
Therefore, there is a need for a classroom solution that addresses the problems of the prior art.
Disclosure of Invention
The invention provides a cloud recording and broadcasting system for solving the problems existing in the prior art.
In order to solve the problems in the prior art, the invention provides a cloud recording and broadcasting system, which comprises:
the audio and video terminal is connected with at least one first audio acquisition device, at least one first video acquisition device and class terminal equipment in each classroom and is used for receiving first audio information acquired by the first audio acquisition device, first video information acquired by the first video acquisition device and courseware information sent by the class terminal equipment, extracting first keywords from the first audio information, recording time position information of the first keywords, labeling the first keywords in first video data according to the time position information, compressing the first audio information, the first video information labeled with the first keywords and the courseware information to generate first target information, and finally transmitting the first target information;
the first network equipment is connected with at least one audio and video terminal and is used for transmitting first target information transmitted by each audio and video terminal;
the recording and broadcasting platform is connected with the first network equipment and is used for receiving the first target information in real time, decoding the first target information, generating the first audio information, the first video information marked with the first keyword and the courseware information, and then synthesizing the first audio information, the first video information marked with the first keyword and the courseware information to generate a first target information stream; and when receiving a live broadcast request message sent by a user terminal, sending the first target information stream to the user terminal.
In one possible implementation manner, the user terminal and the recording and broadcasting platform are connected through a radio and television private network and the internet, and a firewall is arranged between the radio and television private network and the internet.
In one possible implementation manner, the cloud recording and broadcasting system further includes: the second network device and the streaming media server;
the second network equipment is connected with the recording and broadcasting platform through the broadcast and television private network and is used for transmitting a first target information stream transmitted by the recording and broadcasting platform;
the streaming media server is connected with the second network equipment and is used for receiving a first target information stream sent by the second network equipment, the first target information stream within preset time forms a first target streaming media file, a plurality of first keywords are extracted from the first target stream to generate a second keyword, and the second keyword is added to the first target streaming media file.
In a possible implementation manner, the streaming media server is further configured to receive an on-demand request message of the user terminal, where the on-demand request message includes an on-demand keyword; and then determining the on-demand content as a first target streaming media file according to the on-demand keyword, and finally transmitting the first target streaming media file to a user terminal.
In one possible implementation manner, the cloud recording and broadcasting system further includes: a Web server;
the Web server is connected with the second network equipment, and is used for receiving a first target information stream sent by the second network equipment, storing the first target stream information, generating a first Web file, generating a second keyword by extracting a plurality of first keywords from the first target stream, and adding the second keyword to the first Web file.
In one possible implementation manner, the recording and broadcasting platform is further configured to receive first evaluation information sent by a user terminal, filter the first evaluation information according to a preset rule, and display the evaluation information in the first target information stream.
In a possible implementation manner, the streaming media server is further configured to receive second evaluation information sent by the user terminal, where the second evaluation information includes a receiving time, filter the second evaluation information according to a preset rule, and display the filtered second evaluation information and the receiving time in the first target streaming media file.
In a possible implementation manner, the audio-video terminal is further configured to extract a face image in the first video information, identify the face image, and send the face image to the recording and playing platform; the face image carries a terminal identification ID;
the recording and broadcasting platform is further used for carrying out point marking on the face images to obtain feature points of each face image, obtaining change data of the face features according to the feature points, analyzing the change data to obtain expression information of students, analyzing the expression information to obtain class listening state information of the students, and generating a class listening state change curve according to the class listening state information.
In one possible implementation manner, the recording and broadcasting platform is further used for monitoring the class listening state information of all students in real time, generating first teaching feedback information according to the class listening state information of all students, and sending the first teaching feedback information to the education terminal.
By applying the cloud recording and broadcasting system provided by the invention, the data processing load of the recording and broadcasting platform 130 can be reduced, and the status information of the students can be processed, so that the status information of the students can be mastered, and the teacher can conveniently develop subsequent teaching work.
Drawings
Fig. 1 is a schematic structural diagram of a cloud recording and broadcasting system according to an embodiment of the present invention.
Detailed Description
The present application is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
The following first, second, etc. numbers are merely distinguishing and have no other meaning.
Fig. 1 is a schematic structural diagram of a cloud recording and broadcasting system according to an embodiment of the present invention. The cloud recording and broadcasting system can be applied to education and teaching activities, as shown in fig. 1, the cloud recording and broadcasting system comprises: audio and video terminal 110, first network device 120, recording and playing platform 130.
The audio-video terminal 110 is connected with at least one first audio acquisition device, at least one first video acquisition device and a classroom terminal device in each classroom, and is configured to receive first audio information acquired by the first audio acquisition device, first video information acquired by the first video acquisition device and courseware information sent by the classroom terminal device, extract a first keyword from the first audio information, record time position information of the first keyword, label the first keyword in the first video data according to the time position information, compress the first audio information, the first video information labeled with the first keyword and the courseware information, generate first target information, and finally transmit the first target information.
Specifically, in each classroom of each school, for example, school a has 12 classrooms, the numbers are classroom 1 to classroom 12 in sequence, each classroom may be provided with a plurality of first audio capturing devices and a plurality of first video capturing devices, for example, there are 4 first video devices and 4 first audio devices, and may be video devices 1 to 4 in sequence, audio devices 1 to 4, and each first video device may be set in a different direction, and similarly, each first video device may be set in a different direction. Therefore, the comprehensiveness of the collected audio and video information is guaranteed by collecting the audio and video information of the same classroom and the same teaching scene from different directions.
The classroom terminal device may be a computer in a classroom, and the computer may store courseware information of a teacher in class, where the courseware may be files in various formats, such as word, ppt, etc.
The audio/video terminal 110 has a processor, and the processor can extract the received first audio information, extract the first keyword, and record the time position information of the first keyword, for example, extract the first keyword "ancient poetry recitation" in 10 minutes and 20 seconds, so that the first keyword "ancient poetry recitation" can be added at the position of 10 minutes and 20 seconds of the first video information according to the time position information.
Meanwhile, the audio/video terminal 110 further includes an encoder, and the encoder compresses the first audio information, the first video information added with the first keyword, and courseware information.
It will be appreciated that other classrooms also generate the first target information in the manner described above.
The first network device 120 is connected to at least one audio/video terminal 110, and is configured to transmit first target information transmitted by each audio/video terminal 110.
Wherein the first network device 120 may be a switch that may transmit first target information for a plurality of classrooms of the school.
The recording and playing platform 130 is connected with the first network device 120, and is used for receiving the first target information in real time, decoding the first target information, generating first audio information, first video information marked with a first keyword and courseware information, and then synthesizing the first audio information, the first video information marked with the first keyword and the courseware information to generate a first target information stream; and when receiving the live broadcast request message sent by the user terminal, sending the first target information stream to the user terminal.
Specifically, a school may have a recording platform 130, where the recording platform 130 processes first target information sent by the audio/video terminals 110 in multiple classrooms through the switch.
The processing may be decoding and synthesizing each piece of first target information, and performing real-time processing on the first target information transmitted in real time by the audio/video terminal 110.
In one example, the recording and broadcasting platform 130 also receives the live broadcast request message sent by the user terminal, and sends the first target information stream to the user terminal according to the live broadcast request message, so that the recording and broadcasting platform can receive and transmit the information at the same time, and the information is not stored, thereby reducing the processing burden and improving the processing speed.
It should be noted that, the first target information further includes an audio/video terminal 110 Identifier (ID), after decoding the first target information, the audio/video terminal 110 identifier may be obtained, and subsequently, after the synthesis processing, the generated first target information stream may also include the ID of the audio/video terminal 110.
Therefore, the user can directly acquire a plurality of first target information streams of one school from the recording and broadcasting platform 130 through live broadcast, and centralized management and control of a plurality of classrooms of one school are realized. In addition, the recording and playing platform 130 is simplified to be simple in input and output, so that the data processing amount is reduced.
Further, the user terminal is connected to the recording and broadcasting platform 130 through a radio and television private network and the internet, and a firewall is disposed between the radio and television private network and the internet.
Thus, the security of the recording and playing platform 130 is improved.
Further, the cloud recording and broadcasting system further comprises: a second network device 140 and a streaming server 150;
the second network device 140 is connected with the recording and broadcasting platform 130 through a broadcast and television private network, and is used for transmitting the first target information stream transmitted by the recording and broadcasting platform 130;
the streaming media server 150 is connected to the second network device 140, and is configured to receive the first target information stream sent by the second network device 140, and the first target information stream within a preset time constitutes a first target streaming media file, and generate a second keyword by extracting a plurality of first keywords from the first target stream, and add the second keyword to the first target streaming media file.
Wherein the second network device 140 may be a core switch.
The streaming server 150 is a core system of the streaming application, and is a key platform for an operator to provide video services to users. The main functions of streaming server 150 are to collect, cache, schedule, and transport the streaming media content.
The streaming server 150 may extract a first keyword in the first target information stream of the recording platform 130 and then generate a second keyword, which may be a summary of the first keyword.
Further, the streaming media server 150 is further configured to receive an on-demand request message of the user terminal, where the on-demand request message includes an on-demand keyword; and then determining the on-demand content as a first target streaming media file according to the on-demand keyword, and finally transmitting the first target streaming media file to the user terminal.
Therefore, through the recording and broadcasting platform and the streaming media server, a user can realize on-demand through the user terminal.
Further, the cloud recording and broadcasting system further comprises: a Web server 160;
the Web server 160 is connected to the second network device 140, and is configured to receive the first target information stream sent by the second network device 140, store the first target stream information, generate a first Web file, extract a plurality of first keywords from the first target stream, generate a second keyword, and add the second keyword to the first Web file.
Further, the recording and broadcasting platform 130 is further configured to receive the first evaluation information sent by the user terminal, filter the first evaluation information according to a preset rule, and display the evaluation information in the first target information stream.
Further, the streaming media server 150 is further configured to receive second evaluation information sent by the user terminal, where the second evaluation information includes a receiving time, filter the second evaluation information according to a preset rule, and display the filtered second evaluation information and the receiving time in the first target streaming media file.
Specifically, in the live broadcast teaching process, literal communication can be performed, and when the number of students is large and the collective communication is inconvenient, the communication between a teacher and the students and between the students and the students can be realized through the mode.
The preset rule may be to filter some words.
In a more preferred embodiment, in order to guarantee the class listening quality, the cloud recording and broadcasting system can monitor the class listening state of students.
Specifically, the audio/video terminal 110 is further configured to extract a face image in the first video information, identify the face image, and send the face image to the recording and playing platform 130; the facial image carries a terminal identification ID;
the recording and playing platform 130 is further configured to perform point labeling on the facial images to obtain feature points of each facial image, obtain change data of the facial features according to the feature points, analyze the change data to obtain expression information of the student, analyze the expression information to obtain class listening state information of the student, and generate a class listening state change curve according to the class listening state information.
Wherein the facial feature points comprise eyes, mouth, eyebrows and the like, and the person skilled in the art can set the facial features to be marked according to the needs; after obtaining the change data of the plurality of facial features, analyzing the change of the feature points of the marked plurality of facial features to obtain the expression information of the student; analyzing the expression information through a preset model and an algorithm to obtain class-listening state information of the student, wherein the class-listening state information can specifically comprise a thinking state, a fool state, an excited state, an confusion state, a sleep state and the like; and generating a class-listening state change curve according to the change condition of the class-listening state information, so as to record the class-listening state of the students.
For example, if the residence time of the eyeballs of a certain classmate at the same position exceeds the preset time threshold value through algorithm calculation, the class-listening state of the classmate in the time period can be obtained to be slow-released, so that a class-listening state change curve is generated according to the time of a class and the continuous change of the class-listening state, and the state change Qu Xianxiang is sent by a third-party terminal, so that the attention of a teacher is brought.
Further, the recording and broadcasting platform 130 is further configured to monitor the lecture-listening status information of all students in real time, generate first teaching feedback information according to the lecture-listening status information of all students, and send the first teaching feedback information to the education terminal.
Specifically, in order to enable the teaching teacher to intuitively understand the class-listening state of all students, the students in the same class-listening state can be represented by the same color, for example, yellow for the students in the puzzling state, red for the students in the thinking state, black for the students in the foggy state and the like, so that the teaching teacher can clearly observe the class-listening state of all the students through the education terminal, and the teaching mode and the teaching progress can be adjusted according to the class-listening state of all the students.
By applying the cloud recording and broadcasting system provided by the invention, the data processing load of the recording and broadcasting platform 130 can be reduced, and the status information of the students can be processed, so that the status information of the students can be mastered, and the teacher can conveniently develop subsequent teaching work.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative elements and steps are described above generally in terms of function in order to clearly illustrate the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied in hardware, in a software module executed by a processor, or in a combination of the two. The software modules may be disposed in Random Access Memory (RAM), memory, read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
The foregoing detailed description of the invention has been presented for purposes of illustration and description, and it should be understood that the invention is not limited to the particular embodiments disclosed, but is intended to cover all modifications, equivalents, alternatives, and improvements within the spirit and principles of the invention.
Claims (7)
1. The cloud recording and broadcasting system is characterized by comprising:
the audio and video terminal is connected with at least one first audio acquisition device, at least one first video acquisition device and class terminal equipment in each classroom and is used for receiving first audio information acquired by the first audio acquisition device, first video information acquired by the first video acquisition device and courseware information sent by the class terminal equipment, extracting first keywords from the first audio information, recording time position information of the first keywords, labeling the first keywords in first video data according to the time position information, compressing the first audio information, the first video information labeled with the first keywords and the courseware information to generate first target information, and finally transmitting the first target information;
the first network equipment is connected with at least one audio and video terminal and is used for transmitting first target information transmitted by each audio and video terminal; the first network device is a switch;
the recording and broadcasting platform is connected with the first network equipment and is used for receiving the first target information in real time, decoding the first target information, generating the first audio information, the first video information marked with the first keyword and the courseware information, and then synthesizing the first audio information, the first video information marked with the first keyword and the courseware information to generate a first target information stream; when receiving a live broadcast request message sent by a user terminal, sending the first target information stream to the user terminal;
the recording and broadcasting platform is further used for receiving first evaluation information sent by the user terminal, filtering the first evaluation information according to preset rules and displaying the evaluation information in the first target information flow;
wherein, cloud record broadcast system still includes: the second network device and the streaming media server;
the second network equipment is connected with the recording and broadcasting platform through a broadcast and television private network and is used for transmitting the first target information stream transmitted by the recording and broadcasting platform; the second network device is a core switch;
the streaming media server is connected with the second network equipment and is used for receiving a first target information stream sent by the second network equipment, the first target information stream within preset time forms a first target streaming media file, a plurality of first keywords are extracted from the first target stream to generate a second keyword, and the second keyword is added to the first target streaming media file.
2. The cloud recording and broadcasting system according to claim 1, wherein the user terminal and the recording and broadcasting platform are connected through a radio and television private network and the internet, and a firewall is arranged between the radio and television private network and the internet.
3. The cloud recording and broadcasting system according to claim 1, wherein the streaming server is further configured to receive a request message of a user terminal, the request message including a request keyword; and then determining the on-demand content as a first target streaming media file according to the on-demand keyword, and finally transmitting the first target streaming media file to a user terminal.
4. The cloud recording and broadcasting system according to any of claims 1-2, further comprising: a Web server;
the Web server is connected with the second network equipment, and is used for receiving a first target information stream sent by the second network equipment, storing the first target stream information, generating a first Web file, generating a second keyword by extracting a plurality of first keywords from the first target stream, and adding the second keyword to the first Web file.
5. The cloud recording and broadcasting system according to claim 1, wherein the streaming media server is further configured to receive second evaluation information sent by a user terminal, where the second evaluation information includes a receiving time, filter the second evaluation information according to a preset rule, and display the filtered second evaluation information and the receiving time in the first target streaming media file.
6. The cloud recording and broadcasting system according to claim 1, wherein the audio-video terminal is further configured to extract a face image in the first video information, identify the face image, and send the face image to the recording and broadcasting platform; the face image carries a terminal identification ID;
the recording and broadcasting platform is further used for marking points on the facial images to obtain feature points of each facial image, obtaining change data of the facial features according to the feature points, analyzing the change data to obtain expression information of students, analyzing the expression information to obtain class listening state information of the students, and generating a class listening state change curve according to the class listening state information.
7. The cloud recording and broadcasting system according to claim 6, wherein the recording and broadcasting platform is further configured to monitor the lecture-listening status information of all students in real time, generate first teaching feedback information according to the lecture-listening status information of all students, and send the first teaching feedback information to the education terminal.
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| CN201910012087.7A CN109862375B (en) | 2019-01-07 | 2019-01-07 | Cloud recording and broadcasting system |
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| CN201910012087.7A CN109862375B (en) | 2019-01-07 | 2019-01-07 | Cloud recording and broadcasting system |
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| CN111225235B (en) * | 2020-01-16 | 2020-12-04 | 北京合众美华教育投资有限公司 | Method for playing network teaching video |
| CN111601064B (en) * | 2020-05-18 | 2022-02-22 | 维沃移动通信有限公司 | Information interaction method and information interaction device |
| CN114125537B (en) * | 2021-11-29 | 2023-07-25 | Oook(北京)教育科技有限责任公司 | Discussion method, device, medium and electronic equipment for live broadcast teaching |
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| CN103177615B (en) * | 2013-03-26 | 2016-03-02 | 北京新学道教育科技有限公司 | A kind of recording and broadcasting system based on cloud computing technology and method |
| CN104717467A (en) * | 2015-03-05 | 2015-06-17 | 广州市吉星信息科技有限公司 | Wireless field teaching system |
| CN106341722A (en) * | 2016-09-21 | 2017-01-18 | 努比亚技术有限公司 | Video editing method and device |
| CN107948673A (en) * | 2017-12-14 | 2018-04-20 | 南京美桥信息科技有限公司 | A kind of visible intelligent performs in a radio or TV programme method and system |
| CN108875606A (en) * | 2018-06-01 | 2018-11-23 | 重庆大学 | A kind of classroom teaching appraisal method and system based on Expression Recognition |
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