CN112203106B - Live broadcast teaching method and device, computer equipment and storage medium - Google Patents
Live broadcast teaching method and device, computer equipment and storage medium Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/21—Server components or server architectures
- H04N21/218—Source of audio or video content, e.g. local disk arrays
- H04N21/2187—Live feed
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/233—Processing of audio elementary streams
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/234—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs
- H04N21/2343—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
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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
- H04N21/44008—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 operations for analysing video streams, e.g. detecting features or characteristics in the video stream
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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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- 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]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/633—Control signals issued by server directed to the network components or client
- H04N21/6332—Control signals issued by server directed to the network components or client directed to client
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The application relates to a live broadcast teaching method and device, computer equipment and a storage medium. The method comprises the following steps: receiving selection operation of a plurality of watching terminal identifications, generating an invitation instruction according to the selection operation, and sending the invitation instruction to the watching terminal corresponding to each watching terminal identification; when the trigger operation of a class button is received, starting live broadcast data acquisition equipment, and receiving video data and audio data acquired by the live broadcast data acquisition equipment; preprocessing video data and audio data to obtain target live broadcast data; pushing target live broadcast data to a preset network address; and when receiving confirmation information returned according to the invitation instruction, acquiring a target watching terminal identifier in the confirmation information so that a watching terminal corresponding to the target watching terminal identifier pulls the live broadcast data through a preset network address, decoding the target live broadcast data, and sending the decoded target live broadcast data to display equipment for playing. By adopting the method, the live broadcast teaching efficiency can be improved.
Description
Technical Field
The present application relates to the field of computer technologies, and in particular, to a live broadcast teaching method and apparatus, a computer device, and a storage medium.
Background
With the development of internet technology, live webcasting is widely applied to multiple fields of shopping, entertainment, education and the like. The network live broadcast teaching is used as the important application of the network live broadcast in the education field, so that people can learn more quickly and anytime anywhere. In a live broadcast system based on an RTMP (Routing Table multimedia Protocol) technology, live broadcast teaching is generally implemented by using a live broadcast streaming media service platform and a live broadcast APP.
However, since the live APP is installed, a lot of preparation work needs to be done before the live APP starts to be live and watch the live APP, for example, user registration, user login, release of watching link, login to a classroom through the link, etc., which is cumbersome and time-consuming to operate, resulting in low live teaching efficiency.
Disclosure of Invention
In view of the foregoing, it is desirable to provide a live-broadcast teaching method, apparatus, computer device, and storage medium capable of improving live-broadcast teaching efficiency.
A live tutoring method, the method comprising:
receiving selection operation of a plurality of watching terminal identifications, generating an invitation instruction according to the selection operation, and sending the invitation instruction to the watching terminal corresponding to each watching terminal identification;
when the triggering operation of a class button is received, starting live broadcast data acquisition equipment, and receiving video data and audio data acquired by the live broadcast data acquisition equipment;
preprocessing the video data and the audio data to obtain target live broadcast data;
pushing the target live broadcast data to a preset network address;
and when receiving confirmation information returned according to the invitation instruction, acquiring a target watching terminal identification in the confirmation information, so that a watching terminal corresponding to the target watching terminal identification pulls the live broadcast data through the preset network address, decodes the target live broadcast data, and sends the decoded target live broadcast data to display equipment for playing.
In one embodiment, the starting of the live data acquisition device when the trigger operation of the class button is received, and the receiving of the video data and the audio data acquired by the live data acquisition device includes:
when receiving the trigger operation of a class button, acquiring live broadcast configuration information;
determining live broadcast data acquisition equipment according to the live broadcast configuration information, and starting the live broadcast data acquisition equipment so as to enable the live broadcast data acquisition equipment to acquire video data and audio data in a live broadcast process;
and receiving the video data and the audio data uploaded by the live broadcast data acquisition equipment.
In one embodiment, the preprocessing the video data and the audio data to obtain target live broadcast data includes:
the video data and the audio data are subjected to synchronous processing to obtain synchronized video data and audio data;
and packaging the synchronized video data and audio data according to a preset protocol to obtain target live broadcast data.
In one embodiment, the synchronizing the video data and the audio data to obtain synchronized video data and audio data further includes:
when the data format of the video data is a first data format, encoding the audio data;
and aligning the time stamps of the video data and the coded audio data to obtain the synchronized video data and audio data.
In one embodiment, the synchronizing the video data and the audio data to obtain synchronized video data and audio data further includes:
when the data format of the video data is a second data format, encoding the video data and encoding the audio data;
and carrying out time stamp alignment on the coded video data and the coded audio data to obtain the synchronized video data and audio data.
In one embodiment, after obtaining the target viewing terminal identifier in the confirmation information, the method further includes:
marking the class state of the watching terminal corresponding to the target watching terminal identification as a ready state;
sending a heartbeat packet to a viewing terminal corresponding to the target viewing terminal identification according to a preset time interval;
and when the response information of the watching terminal corresponding to the target watching terminal identification is not received in a preset time period, marking the class state of the watching terminal corresponding to the target watching terminal identification as a ready state.
In one embodiment, before the generating, according to the selection operation, an invitation instruction to be sent to the viewing terminal corresponding to each viewing terminal identifier when the selection operation on the plurality of viewing terminal identifiers is received, the method further includes:
acquiring a course identifier to be live-broadcasted and course configuration information;
and determining the watching terminal identification corresponding to the course identification to be live broadcast in the course configuration information.
A live teaching apparatus, the apparatus comprising:
the communication module is used for receiving selection operation of a plurality of watching terminal identifications, generating an invitation instruction according to the selection operation and sending the invitation instruction to the watching terminal corresponding to each watching terminal identification;
the receiving module is used for starting the live broadcast data acquisition equipment and receiving video data and audio data acquired by the live broadcast data acquisition equipment when the triggering operation of the class button is received;
the preprocessing module is used for preprocessing the video data and the audio data to obtain target live broadcast data;
the pushing module is used for pushing the target live broadcast data to a preset network address;
the communication module is also used for receiving confirmation information returned according to the invitation instruction;
and the acquisition module is used for acquiring the target watching terminal identification in the confirmation information so that the watching terminal corresponding to the target watching terminal identification pulls the live broadcast data through the preset network address, decodes the target live broadcast data, and sends the decoded target live broadcast data to the display equipment for playing.
A computer device comprising a memory and a processor, the memory storing a computer program operable on the processor, the processor implementing the steps of the various method embodiments described above when executing the computer program.
A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the respective method embodiment described above.
The live broadcast teaching method, the live broadcast teaching device, the computer equipment and the storage medium receive selection operation of a plurality of watching terminal identifications, generate invitation instructions according to the selection operation and send the invitation instructions to the watching terminals corresponding to the watching terminal identifications. When the trigger operation of a class button is received, the live broadcast data acquisition equipment is started, video data and audio data acquired by the live broadcast data acquisition equipment are received, the video data and the audio data are preprocessed to obtain target live broadcast data, and the target live broadcast data are pushed to a preset network address. And when receiving confirmation information returned according to the invitation instruction, acquiring a target watching terminal identifier in the confirmation information so that a watching terminal corresponding to the target watching terminal identifier pulls the live broadcast data through a preset network address, decoding the target live broadcast data, and sending the decoded target live broadcast data to display equipment for playing. Because the built-in live APP that has in the live terminal, after the live terminal opened, can the automatic start and the live APP of operation, need not to carry out artifical installation, also need not to carry out a series of preparation operations such as user registration, user login. Therefore, the live broadcast terminal can initiate live broadcast only by selecting the watching terminal identification when the live broadcast is started. When the live broadcast terminal receives the confirmation information, the watching terminal corresponding to the target watching terminal identification in the confirmation information can pull the live broadcast data through the preset network address, and then the live broadcast is watched. The preparation work before the start of live broadcasting and watching live broadcasting is simplified, the live broadcasting and watching live broadcasting can be quickly initiated under the live broadcasting teaching mode that the operation requirement is low, the live broadcasting field or the watching field is relatively fixed, and the live broadcasting teaching efficiency is effectively improved. Meanwhile, a live APP is arranged in the live terminal, a live streaming media service platform does not need to be logged in, a plurality of servers do not need to be deployed aiming at the service platform, and live teaching cost is further reduced.
Drawings
FIG. 1 is a diagram of an application environment of a live teaching method in one embodiment;
FIG. 2 is a flow diagram of a live teaching method in one embodiment;
fig. 3 is a schematic flow chart illustrating steps of turning on a live data acquisition device and receiving video data and audio data acquired by the live data acquisition device when a trigger operation of a class button is received in an embodiment;
FIG. 4 is a block diagram of a live teaching apparatus according to an embodiment;
FIG. 5 is a diagram illustrating an internal structure of a computer device according to an embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
The live broadcast teaching method can be applied to the application environment shown in fig. 1. Wherein, a plurality of terminals are connected through a network. The terminals may include a live terminal 102 and a viewing terminal 104. The viewing terminal 104 may be plural. Live terminal 102 embeds has live APP, opens the back when live terminal, can automatic start and the live APP of operation. The live broadcast terminal 102 receives selection operation of a plurality of viewing terminal identifications, generates an invitation instruction according to the selection operation, and sends the invitation instruction to the viewing terminal 104 corresponding to each viewing terminal identification. When the live broadcast terminal 102 receives the trigger operation of the class button, the live broadcast data acquisition device is started, and video data and audio data acquired by the live broadcast data acquisition device are received. The live data acquisition equipment can comprise video acquisition equipment, audio acquisition equipment and audio and video acquisition equipment. The live broadcast terminal 102 preprocesses the video data and the audio data to obtain target live broadcast data, and pushes the target live broadcast data to a preset network address. When the live broadcast terminal 102 receives the confirmation information returned according to the invitation instruction, the target watching terminal identification in the confirmation information is acquired, so that the watching terminal corresponding to the target watching terminal identification pulls the target live broadcast data through a preset network address, decodes the packaged live broadcast data, and sends the decoded live broadcast data to the display device for playing. The display device may be a television, a display, or the like that can play video data and audio data. The live terminal 102 and the viewing terminal 104 may be, but are not limited to, various live data processing devices, personal computers, notebook computers, smart phones, and tablet computers.
In an embodiment, as shown in fig. 2, a live broadcast teaching method is provided, which is described by taking the application of the method to the live broadcast terminal in fig. 1 as an example, and includes the following steps:
Live terminal embeds has live APP, opens the back when live terminal, can automatic start and the live APP of operation, need not to carry out artifical installation, also need not to carry out a series of preparation operations such as user registration, user login. The live broadcast terminal is started to carry out the live broadcast rapidly. When the live broadcast is started, the live broadcast terminal can receive the selection operation of a user on a plurality of watching terminal identifications. And the selected watching terminal identification is the terminal identification of the watching terminal corresponding to the course to be live broadcast. The viewing terminal identification is a unique identification marking the viewing terminal. For example, the viewing terminal identification may be a terminal IP Address (Internet Protocol Address). The IP address may be a uniform address format provided by the IP protocol, and is a logical address assigned to each network and each host on the internet.
And the live broadcast terminal responds to the selection operation of the plurality of watching terminal identifications and generates an invitation instruction based on each watching terminal identification. The invitation instruction can also carry a course identifier to be live broadcast. The live course identifier can be a unique identifier used for marking the live course, such as the name of the live course, the number of the live course and the like. The invitation instruction is used for indicating the watching terminal to return the confirmation information of the curriculum to be live, and the live broadcasting terminal sends the invitation instruction to the watching terminal corresponding to the corresponding watching terminal identification, so that the watching terminal returns the confirmation information according to the invitation instruction. The live broadcast terminal and the watching terminal can be connected through a local area network, the watching terminal and the watching terminal can also be connected through a public network, the live broadcast terminal and the watching terminal are connected through the public network, the watching terminal is connected through the local area network, and the watching terminal is connected through the local area network in pairs. The local area network refers to a computer communication network formed by connecting various computers, external devices, databases and the like in a local geographical range, such as a school and a factory. The public network is a public address of the internet, and an IP address of a terminal accessing the internet through the public network is an unreserved address, as opposed to a local area network.
And step 204, when the trigger operation of the class button is received, starting the live broadcast data acquisition equipment, and receiving the video data and the audio data acquired by the live broadcast data acquisition equipment.
The live broadcast terminal is internally provided with a class button in advance, and after the live broadcast terminal sends an invitation instruction to the watching terminals corresponding to the watching terminal identifications, the trigger operation of a user on the class button can be received. And the live broadcast terminal responds to the trigger operation of the class button and starts the live broadcast data acquisition equipment. The live data acquisition device may include a video acquisition device, an audio acquisition device, and an audio-video acquisition device.
The video capture device may be a video camera, and for example, may include an RTMP (Routing Table Multimedia Protocol) video camera and an HDMI (High Definition Multimedia Interface) video camera. The RTMP camera can be connected with the live broadcast terminal through an RJ45 network port on the live broadcast terminal. The HDMI camera can be connected with the live broadcast terminal through an HDMI input port on the live broadcast terminal. The audio capture device may be a microphone. The microphone is connected with the live broadcast terminal through a 3.5mm audio interface on the live broadcast terminal. The audio and video acquisition equipment can be a personal computer, a notebook computer, a tablet computer, a camera and the like. The audio and video acquisition device can simultaneously acquire video data and audio data. The audio and video acquisition equipment is connected with the live broadcast terminal through an HDMI input port on the live broadcast terminal.
The live broadcast data acquisition equipment can acquire various live broadcast sources, for example, the live broadcast sources can include live broadcast sources acquired by video acquisition equipment and audio acquisition equipment and live broadcast sources acquired by audio and video acquisition equipment. In the live broadcast process, the live broadcast terminal collects video data and audio data through the live broadcast data collecting equipment and receives the video data and the audio data transmitted by the live broadcast data collecting equipment through the corresponding data transmission interfaces. The video data may be a time-varying image stream. The audio data may include time-varying speech, vocal music, sound, etc. data.
And step 208, pushing the target live broadcast data to a preset network address.
The live broadcast terminal preprocesses the video data and the audio data, and the preprocessing mode can be that the video data and the audio data are processed synchronously to ensure that the video data and the audio data are synchronous. And packaging the synchronized video data and audio data to obtain target live broadcast data. And the live broadcast terminal transmits the target live broadcast data to a preset network address through a pre-established RTMP channel. The preset network Address may be an IP Address (Internet Protocol Address) of the live broadcast terminal. The live broadcast terminal transmits the target live broadcast data to the preset network address, so that the watching terminal can pull the target live broadcast data from the preset network address, live broadcast is watched, and live broadcast teaching is realized.
And step 210, when receiving the confirmation information returned according to the invitation instruction, acquiring the target watching terminal identification in the confirmation information, so that the watching terminal corresponding to the target watching terminal identification pulls the target live broadcasting data through a preset network address, decodes the target live broadcasting data, and sends the decoded live broadcasting data to the display device for playing.
When the live broadcast terminal receives the confirmation information returned by the watching terminal according to the invitation instruction, the target watching terminal identification in the confirmation information can be obtained, so that the live broadcast terminal can determine that the watching terminal corresponding to the target terminal identification has received the live broadcast class information and is in a ready state. When the live broadcast terminal does not receive the confirmation information returned by the watching terminal according to the invitation instruction, the live broadcast terminal can send the invitation instruction to the corresponding watching terminal at regular time until the confirmation information is received.
The watching terminal corresponding to the target terminal identification can watch live broadcast, namely, target live broadcast data can be pulled through a preset network address. The watching terminal returning the confirmation information can analyze the target live broadcast data to obtain the separated video data and audio data. The viewing terminal decodes the separated video data and audio data, respectively, and the decoding order of the separated video data and audio data is not limited. For example, the separated video data may be decoded first, and then the separated audio data may be decoded. Or the separated audio data may be encoded first and then the separated video data may be encoded. The following description will be given by taking an example in which the separated video data is decoded first and then the separated audio data is decoded. And the watching terminal corresponding to the target terminal identification decodes the separated video data to obtain the decoded video data. For example, the video data may be decoded in h.264 High Profile. The viewing terminal decodes the separated audio data to obtain decoded audio data. For example, the Audio data may be decoded by AAC (Advanced Audio Coding). The live broadcast terminal can transmit decoded video data to display equipment through an HDMI output interface, and the decoded video data are displayed and played through the display equipment. And transmitting the decoded audio data to display equipment through a 3.5mm audio output port, and playing the audio data through the display equipment.
In one embodiment, when the received video data and audio data correspond to multiple live broadcast sources, the live broadcast terminal may encode the video data and audio data of each live broadcast source respectively. Similarly, after the watching terminal corresponding to the target watching terminal identifier pulls the target live broadcasting data through the preset network address, the watching terminal can analyze the target live broadcasting data into multiple paths of data, and each path of data comprises video data and audio data of the same live broadcasting source. The watching terminal decodes the video data and the audio data in each path of data respectively, transmits the decoded video data to the display equipment through the HDMI output interface, and displays and plays the video data and the audio data through the display equipment. And transmitting the decoded audio data to display equipment through a 3.5mm audio output port, and playing the audio data through the display equipment.
In this embodiment, a selection operation on a plurality of viewing terminal identifiers is received, and an invitation instruction is generated according to the selection operation and sent to the viewing terminal corresponding to each viewing terminal identifier. When the trigger operation of a class button is received, the live broadcast data acquisition equipment is started, video data and audio data acquired by the live broadcast data acquisition equipment are received, the video data and the audio data are preprocessed to obtain target live broadcast data, and the target live broadcast data are pushed to a preset network address. And when receiving confirmation information returned according to the invitation instruction, acquiring a target watching terminal identifier in the confirmation information so that a watching terminal corresponding to the target watching terminal identifier pulls the live broadcast data through a preset network address, decoding the target live broadcast data, and sending the decoded target live broadcast data to display equipment for playing. Because the built-in live APP that has in the live terminal, after the live terminal opened, can the automatic start and the live APP of operation, need not to carry out artifical installation, also need not to carry out a series of preparation operations such as user registration, user login. Therefore, the live broadcast terminal can initiate live broadcast only by selecting the watching terminal identification when the live broadcast is started. When the live broadcast terminal receives the confirmation information, the watching terminal corresponding to the target watching terminal identification in the confirmation information can pull the live broadcast data through the preset network address, and then the live broadcast is watched. The preparation work before the start of live broadcasting and watching live broadcasting is simplified, the live broadcasting and watching live broadcasting can be quickly initiated under the live broadcasting teaching mode that the operation requirement is low, the live broadcasting field or the watching field is relatively fixed, and the live broadcasting teaching efficiency is effectively improved. Meanwhile, a live APP is arranged in the live terminal, a live streaming media service platform does not need to be logged in, a plurality of servers do not need to be deployed aiming at the service platform, and live teaching cost is further reduced.
In one embodiment, as shown in fig. 3, when the trigger operation of the session button is received, the live data collecting device is turned on, and the step of receiving the video data and the audio data collected by the live data collecting device includes:
And 304, determining live broadcast data acquisition equipment according to the live broadcast configuration information, and starting the live broadcast data acquisition equipment so that the live broadcast data acquisition equipment acquires video data and audio data in the live broadcast process.
And step 306, receiving the video data and the audio data uploaded by the live data acquisition equipment.
When the live broadcast terminal receives the trigger operation of the user on the class button, the live broadcast terminal responds to the trigger operation on the class button and acquires live broadcast configuration information based on the trigger operation. The live broadcast configuration information may include a live broadcast terminal, a video capture device and a corresponding input port, an audio and video capture device and a corresponding input port, and the like. Wherein the video capture device may be a camera. The camera can be an RTMP camera or an HDMI camera. The corresponding input port of RTMP camera is RJ45 net gape, and RTMP camera passes through the RJ45 net gape promptly and is connected with live terminal. The input port corresponding to the HDMI camera is an HDMI input port, namely the HDMI camera is connected with the live broadcast terminal through the HDMI input port. The audio capture device may be a microphone. The input port that the microphone corresponds is 3.5mm audio input interface, and the microphone is connected with live broadcast terminal through 3.5mm audio input interface promptly. The audio and video acquisition equipment can be a personal computer, a notebook computer, a tablet computer, a camera and the like. The input port corresponding to the audio and video acquisition equipment is an HDMI input port, namely the audio and video acquisition equipment is connected with the live broadcast terminal through the HDMI input port.
Under different teaching modes, the live broadcast terminal can start different live broadcast data acquisition equipment according to the live broadcast configuration information. For example, under the teaching mode that the teacher mainly said, live broadcast terminal can open video acquisition equipment and audio acquisition equipment according to live broadcast configuration information, through video acquisition equipment acquisition video data, video acquisition equipment will gather video data transmission to live broadcast terminal. Audio data are collected through audio collecting equipment, and the audio collecting equipment transmits the collected audio data to a live broadcast terminal.
In a teaching mode of live broadcasting without a main teacher through video playing and a teaching mode of temporary courseware playing, audio and video acquisition equipment can be started according to live broadcasting configuration information, and video data and audio data are acquired through the audio and video acquisition equipment at the same time. And the audio and video acquisition equipment transmits the acquired video data and audio data to the live broadcast terminal.
In this embodiment, when receiving the trigger operation of the class button, the live broadcast configuration information is acquired, so that the live broadcast data acquisition device is determined according to the live broadcast configuration information, the live broadcast data acquisition device is started, the live broadcast data acquisition device acquires video data and audio data in a live broadcast process, and the video data and the audio data uploaded by the live broadcast data acquisition device are received. Can open corresponding live collection system according to the teaching mode of difference to video data and audio data under the multiple teaching mode of realization collection improve the variety and the flexibility of live teaching.
In one embodiment, the pre-processing the video data and the audio data to obtain the target live broadcast data includes: carrying out synchronous processing on the video data and the audio data to obtain the video data and the audio data which are synchronized; and packaging the synchronized video data and audio data according to a preset protocol to obtain target live broadcast data.
The live broadcast terminal carries out synchronous processing on the video data and the audio data, and the synchronous processing mode can be that the video data and the audio data are firstly coded, and then the time stamp alignment is carried out on the coded video data to the coded audio data. Specifically, the live broadcast terminal encodes the received video data and audio data, respectively. The coding order of the video data and the audio data is not limited. For example, video data may be encoded first, followed by encoding of audio data. Or the audio data may be encoded first and then the video data may be encoded. The following description will take an example in which video data is encoded first and then audio data is encoded. And the live broadcast terminal encodes the video data to obtain encoded video data. For example, the video data may be encoded in h.264 High Profile. And coding the received audio data to obtain coded audio data. For example, the Audio data may be encoded in AAC (Advanced Audio Coding). And then, aligning the time stamp of the coded video data with the time stamp of the coded audio data by the live broadcast terminal to obtain the synchronized video data and audio data.
And the live broadcast terminal encapsulates the synchronized video data and audio data according to a preset protocol to obtain target live broadcast data. For example, the preset protocol may be an RTMP protocol. The live broadcast terminal can transmit target live broadcast data to a preset network address through a pre-established RTMP channel. And then the watching terminal pulls the target live broadcast data from the preset network address, so that the live broadcast is watched, and live broadcast teaching is realized.
In one embodiment, synchronizing the video data and the audio data to obtain synchronized video data and audio data further includes: when the data format of the video data is a first data format, encoding the audio data; and carrying out time stamp alignment on the video data and the coded audio data to obtain the synchronized video data and audio data.
The live terminal may identify a data format of the video data after receiving the video data and the audio data. When the data format of the video data is the first data format, the first data format may be a coded video data format, that is, it indicates that the video data is collected by the RTMP camera, and at this time, the live broadcast terminal does not need to code the video data, but only needs to code the audio data. For example, the encoding method of the audio data may be AAC. Therefore, the live broadcast terminal aligns the time stamp of the video data to the time stamp of the coded audio data to obtain the synchronized video data and audio data. When the data format of the video data is the coded format, the live broadcast terminal only needs to code the audio data, and the data synchronization efficiency can be improved.
In one embodiment, synchronizing the video data and the audio data to obtain synchronized video data and audio data further includes: when the data format of the video data is a second data format, coding the video data and coding the audio data; and carrying out time stamp alignment on the coded video data and the coded audio data to obtain the synchronized video data and audio data.
When the live broadcast terminal identifies that the data format of the video data is the second data format, the second data format may be an original data format, that is, an uncoded data format, that is, it indicates that the video data is acquired by the HDMI camera, and at this time, the live broadcast terminal needs to encode the video data and the audio data respectively. For example, the video data may be encoded in h.264 High Profile. The encoding method of the audio data may be AAC. Therefore, the live broadcast terminal aligns the time stamp of the video data to the time stamp of the coded audio data to obtain the synchronized video data and audio data. When the data format of the video data is the format after not being coded, the live broadcast terminal respectively codes the video data and the audio data, so that the video data and the audio data are compressed, the data transmission data volume is reduced, and the data transmission speed is improved.
In this embodiment, the video data and the audio data are processed synchronously, so that the time delay between the data acquisition end and the data playing end can be reduced, and the time difference between the video data and the audio data played by the watching terminal can be reduced, thereby ensuring the live broadcasting teaching quality. And packaging the synchronized video data and audio data according to a preset protocol to obtain target live broadcast data. The synchronized video data and audio data can be stored in the same file, so that the video data and the audio data can be simultaneously pulled by the watching terminal.
In one embodiment, after obtaining the target viewing terminal identifier in the confirmation information, the method further includes: marking the class state of the watching terminal corresponding to the target watching terminal identification as a ready state; sending a heartbeat packet to a viewing terminal corresponding to the target viewing terminal identification according to a preset time interval; and when the response information of the watching terminal corresponding to the target watching terminal identification is not received in the preset time period, marking the class state of the watching terminal corresponding to the target watching terminal identification as a ready state.
After the live broadcast terminal acquires the confirmation information, the target watching terminal identification in the confirmation information can be acquired, the class state of the watching terminal corresponding to the target watching terminal identification is marked as a ready state, and a heartbeat packet is sent to the watching terminal according to a preset time interval, namely, the heartbeat packet is sent to the watching terminal at a certain frequency. The heartbeat package represents that the live broadcast terminal and the watching terminal are normally connected. When the live broadcast terminal does not receive the response information of the watching terminal corresponding to the target watching terminal identification within the preset time period, the heartbeat of the watching terminal is abnormal, the live broadcast terminal can automatically disconnect the watching terminal, and the class state of the watching terminal corresponding to the target watching terminal identification is restored to a ready state. At this time, the live broadcast terminal will send the invitation instruction to the watching terminal again at regular time until receiving the confirmation information. Meanwhile, the live broadcast terminal can reestablish the connection with the watching terminal. Therefore, the safety of data transmission between the live broadcast terminal and the watching data is improved.
In one embodiment, when receiving a selection operation on a plurality of viewing terminal identifiers, before generating an invitation instruction according to the selection operation and sending the invitation instruction to a viewing terminal corresponding to each viewing terminal identifier, the method further includes: acquiring a course identifier to be live-broadcasted and course configuration information; and determining a watching terminal identifier corresponding to the course identifier to be live broadcast in the course configuration information.
After the live broadcast terminal finishes the live broadcast preparation work, the course identification to be live broadcast and the course configuration information can be obtained before the selection operation of the plurality of watching terminal identifications triggered by the user is received. The course configuration information comprises a plurality of viewing terminal identifications corresponding to the course identifications. And the live broadcast terminal determines a watching terminal identification corresponding to the course identification to be live broadcast in the course configuration information. And the live broadcast terminal responds to the selection operation of the plurality of watching terminal identifications, generates corresponding invitation instructions according to the watching terminal identifications and sequentially sends the invitation instructions to the watching terminals corresponding to the watching terminal identifications. Because the course configuration information is pre-configured and stored in the live broadcast terminal, when the live broadcast terminal starts the live broadcast, the watching terminal identification corresponding to the course to be live broadcast can be directly selected according to the course configuration information so as to send an invitation instruction, and the fast start of the live broadcast is realized.
In one embodiment, the live broadcast terminal can perform live broadcast preparation before starting live broadcast, so as to ensure normal transmission of live broadcast data in a subsequent live broadcast process. Specifically, the live broadcast terminal receives a live broadcast preparation instruction, and creates an RTMP Server according to the live broadcast preparation instruction, namely, presets a network address, an RTMP Client and establishes an RTMP channel. The RTMP Client is used for pushing stream, namely transmitting the target live broadcast data to a preset network address. The RTMP channel is a transmission channel for transmitting the target live broadcast data pushed by the RTMP Client to a preset network address. And then, the live broadcast terminal acquires live broadcast configuration information, wherein the live broadcast configuration information can comprise the live broadcast terminal, video acquisition equipment, a corresponding input port, audio and video acquisition equipment, a corresponding input port and the like. The live broadcast terminal starts the live broadcast data acquisition equipment according to the live broadcast configuration information, video data and audio data of the live broadcast terminal are acquired through the live broadcast data acquisition equipment, and the live broadcast terminal encodes the received video data and the received audio data respectively. The coding order of the video data and the audio data is not limited. For example, video data may be encoded first, followed by encoding of audio data. Or the audio data may be encoded first and then the video data may be encoded. The following description will take an example in which video data is encoded first and then audio data is encoded. And the live broadcast terminal encodes the video data to obtain encoded video data. For example, the video data may be encoded in h.264 High Profile. And coding the received audio data to obtain the coded audio data. For example, the Audio data may be encoded in AAC (Advanced Audio Coding). And then, aligning the time stamp of the coded video data with the time stamp of the coded audio data by the live broadcast terminal to obtain the synchronized video data and audio data. And the live broadcast terminal encapsulates the synchronized video data and audio data according to a preset protocol to obtain target live broadcast data. For example, the preset protocol may be an RTMP protocol. The live broadcast terminal can transmit target live broadcast data to a preset network address through a pre-established RTMP channel, and the live broadcast terminal finishes preparation work before live broadcast. The live broadcast terminal can play target live broadcast data through the broadcast guide control interface so that a teacher can see local live broadcast pictures conveniently.
It should be understood that although the steps in the flowcharts of fig. 2 to 3 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least some of the steps in fig. 2-3 may include multiple sub-steps or multiple stages that are not necessarily performed at the same time, but may be performed at different times, and the order of performing the sub-steps or stages is not necessarily sequential, but may be performed in turn or alternately with other steps or at least some of the sub-steps or stages of other steps.
In one embodiment, as shown in fig. 4, there is provided a live teaching apparatus including: a communication module 402, a receiving module 404, a preprocessing module 406, a pushing module 408 and an obtaining module 410, wherein:
the communication module 402 is configured to receive a selection operation on multiple viewing terminal identifiers, generate an invitation instruction according to the selection operation, and send the invitation instruction to a viewing terminal corresponding to each viewing terminal identifier.
And the receiving module 404 is configured to, when receiving a trigger operation of the class button, turn on a live data acquisition device, and receive video data and audio data acquired by the live data acquisition device.
And the preprocessing module 406 is configured to preprocess the video data and the audio data to obtain target live broadcast data.
The pushing module 408 is configured to push the target live broadcast data to a preset network address.
The communication module 402 is further configured to receive a confirmation message returned according to the invitation instruction.
The obtaining module 410 is configured to obtain the target viewing terminal identifier in the confirmation information, so that the viewing terminal corresponding to the target viewing terminal identifier pulls the live broadcast data through the preset network address, decodes the target live broadcast data, and sends the decoded target live broadcast data to the display device for playing.
In an embodiment, the receiving module 404 is configured to, when a trigger operation of a session button is received, obtain live broadcast configuration information; determining live broadcast data acquisition equipment according to the live broadcast configuration information, and starting the live broadcast data acquisition equipment so that the live broadcast data acquisition equipment acquires video data and audio data in a live broadcast process; and receiving video data and audio data uploaded by live broadcast data acquisition equipment.
In one embodiment, the pre-processing module 406 further comprises:
the synchronization unit is used for carrying out synchronization processing on the video data and the audio data to obtain the synchronized video data and audio data;
and the packaging unit is used for packaging the synchronized video data and audio data according to a preset protocol to obtain target live broadcast data.
In one embodiment, the synchronization unit is further configured to encode the audio data when the data format of the video data is the first data format; and carrying out time stamp alignment on the video data and the coded audio data to obtain the synchronized video data and audio data.
In one embodiment, the synchronization unit is further configured to encode the video data and encode the audio data when the data format of the video data is the second data format; and carrying out time stamp alignment on the coded video data and the coded audio data to obtain the synchronized video data and audio data.
In one embodiment, the above apparatus further comprises: the heartbeat module is used for marking the class state of the watching terminal corresponding to the target watching terminal identification as a ready state; sending a heartbeat packet to a viewing terminal corresponding to the target viewing terminal identification according to a preset time interval; and when the response information of the watching terminal corresponding to the target watching terminal identification is not received in the preset time period, marking the class state of the watching terminal corresponding to the target watching terminal identification as a ready state.
In one embodiment, the above apparatus further comprises: the determining module is used for acquiring the identification of the curriculum to be live broadcast and the curriculum configuration information; and determining a watching terminal identifier corresponding to the course identifier to be live broadcast in the course configuration information.
For specific limitations of the live teaching device, reference may be made to the above limitations on the live teaching method, which is not described herein again. All modules in the live teaching device can be completely or partially realized through software, hardware and a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
In one embodiment, a computer device is provided, which may be a live terminal, and its internal structure diagram may be as shown in fig. 5. The computer apparatus includes a processor, a memory, a communication interface, an input device, and an output device connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The communication interface of the computer device is used for carrying out wired or wireless communication with an external terminal, and the wireless communication can be realized through WIFI, an operator network, NFC (near field communication) or other technologies. The computer program is executed by a processor to implement a live tutoring method. The input device of the computer equipment can be a key, a track ball or a touch pad arranged on the shell of the computer equipment, and can also be an external keyboard, a touch pad or a mouse and the like. The output means of the computer device may comprise a display screen, a loudspeaker, etc.
Those skilled in the art will appreciate that the architecture shown in fig. 5 is merely a block diagram of some of the structures associated with the disclosed aspects and is not intended to limit the computing devices to which the disclosed aspects apply, as particular computing devices may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.
In one embodiment, a computer device is provided, comprising a memory storing a computer program and a processor implementing the steps of the various embodiments described above when the processor executes the computer program.
In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the respective embodiments described above.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database or other medium used in the embodiments provided herein can include non-volatile and/or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically Programmable ROM (EPROM), electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), rambus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A live broadcast teaching method is applied to a live broadcast terminal with a live broadcast APP inside, and comprises the following steps:
receiving selection operation of a plurality of watching terminal identifications, generating an invitation instruction according to the selection operation, and sending the invitation instruction to the watching terminal corresponding to each watching terminal identification;
when the trigger operation of button on class is received, open live broadcast data acquisition equipment, receive video data and audio data that live broadcast data acquisition equipment gathered include: when receiving the trigger operation of a class button, acquiring live broadcast configuration information; determining live broadcast data acquisition equipment as audio and video acquisition equipment according to live broadcast configuration information in a teaching mode in which a teacher does not have a main teacher and live broadcast is carried out by playing videos and in a teaching mode in which the teacher has the main teacher but temporarily plays courseware; receiving video data and audio data acquired by the audio and video acquisition equipment; under a teaching mode of teacher's talkback, determining the live broadcast data acquisition equipment as video acquisition equipment and audio acquisition equipment according to the live broadcast configuration information; receiving video data collected by the video collecting equipment and audio data collected by the audio collecting equipment;
preprocessing the video data and the audio data to obtain target live broadcast data;
pushing the target live broadcast data to a preset network address;
and when receiving confirmation information returned according to the invitation instruction, acquiring a target watching terminal identification in the confirmation information, so that a watching terminal corresponding to the target watching terminal identification pulls the target live broadcast data through the preset network address, decodes the target live broadcast data, and sends the decoded target live broadcast data to a display device for playing.
2. The method of claim 1, wherein the pre-processing the video data and the audio data to obtain target live data comprises:
the video data and the audio data are subjected to synchronous processing to obtain synchronized video data and audio data;
and packaging the synchronized video data and audio data according to a preset protocol to obtain target live broadcast data.
3. The method of claim 2, wherein the synchronizing the video data and the audio data to obtain synchronized video data and audio data further comprises:
when the data format of the video data is a first data format, encoding the audio data;
and aligning the time stamps of the video data and the coded audio data to obtain the synchronized video data and audio data.
4. The method of claim 2, wherein the synchronizing the video data and the audio data to obtain synchronized video data and audio data further comprises:
when the data format of the video data is a second data format, encoding the video data and encoding the audio data;
and carrying out time stamp alignment on the coded video data and the coded audio data to obtain the synchronized video data and audio data.
5. The method according to any one of claims 1 to 4, wherein after acquiring the target viewing terminal identifier in the confirmation information, the method further comprises:
marking the class state of the watching terminal corresponding to the target watching terminal identification as a ready state;
sending a heartbeat packet to a viewing terminal corresponding to the target viewing terminal identification according to a preset time interval;
and when the response information of the watching terminal corresponding to the target watching terminal identification is not received in a preset time period, marking the class state of the watching terminal corresponding to the target watching terminal identification as a ready state.
6. The method according to any one of claims 1 to 4, wherein before the step of generating an invitation instruction according to the selection operation and sending the invitation instruction to the viewing terminal corresponding to each viewing terminal identifier when receiving the selection operation on the plurality of viewing terminal identifiers, the method further comprises:
acquiring a course identifier to be live-broadcasted and course configuration information;
and determining the watching terminal identification corresponding to the course identification to be live broadcast in the course configuration information.
7. A live teaching device, the device comprising:
the communication module is used for receiving selection operation of a plurality of watching terminal identifications through a live broadcast terminal with a live broadcast APP built in, generating an invitation instruction according to the selection operation and sending the invitation instruction to the watching terminals corresponding to the watching terminal identifications;
the receiving module is used for when the live broadcast terminal receives the trigger operation of the button of having lessons, opens live broadcast data acquisition equipment, receives video data and audio data that live broadcast data acquisition equipment gathered, include: when the live broadcast terminal receives a trigger operation of a class button, acquiring live broadcast configuration information; the live broadcast configuration information comprises live broadcast data acquisition equipment, and the live broadcast data acquisition equipment comprises an audio and video acquisition equipment identifier; in a teaching mode that a teacher does not have a main teacher and performs live broadcasting by playing videos and in a teaching mode that the teacher has the main teacher but temporarily plays courseware, starting audio and video acquisition equipment corresponding to the audio and video acquisition equipment identification according to the live broadcasting configuration information; receiving video data and audio data acquired by the audio and video acquisition equipment; under a teaching mode of teacher's talkback, determining the live broadcast data acquisition equipment as video acquisition equipment and audio acquisition equipment according to the live broadcast configuration information; receiving video data collected by the video collecting equipment and audio data collected by the audio collecting equipment;
the preprocessing module is used for preprocessing the video data and the audio data through the live broadcast terminal to obtain target live broadcast data;
the push module is used for pushing the target live broadcast data to a preset network address through the live broadcast terminal;
the communication module is also used for receiving confirmation information returned according to the invitation instruction through the live broadcast terminal;
and the acquisition module is used for acquiring the target watching terminal identification in the confirmation information through the live broadcasting terminal so that the watching terminal corresponding to the target watching terminal identification pulls the target live broadcasting data through the preset network address, decodes the target live broadcasting data, and sends the decoded target live broadcasting data to the display equipment for playing.
8. The apparatus of claim 7, wherein the preprocessing module further comprises:
the synchronization unit is used for carrying out synchronization processing on the video data and the audio data to obtain synchronized video data and audio data;
and the packaging unit is used for packaging the synchronized video data and audio data according to a preset protocol to obtain target live broadcast data.
9. A computer device comprising a memory and a processor, the memory storing a computer program operable on the processor, wherein the processor implements the steps of the method of any one of claims 1 to 6 when executing the computer program.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 6.
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| CN113727123A (en) * | 2021-07-19 | 2021-11-30 | 深圳爱特天翔科技有限公司 | Internet live broadcast system |
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| WO2023138222A1 (en) * | 2022-01-24 | 2023-07-27 | 聚好看科技股份有限公司 | Display device and live broadcasting method |
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