CN112804554A - Live broadcast playback method, live broadcast playback system, electronic equipment and storage medium - Google Patents
Live broadcast playback method, live broadcast playback system, electronic 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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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B5/00—Electrically-operated educational appliances
- G09B5/08—Electrically-operated educational appliances providing for individual presentation of information to a plurality of student stations
- G09B5/14—Electrically-operated educational appliances providing for individual presentation of information to a plurality of student stations with provision for individual teacher-student communication
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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
- H04N21/239—Interfacing the upstream path of the transmission network, e.g. prioritizing client content requests
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/433—Content storage operation, e.g. storage operation in response to a pause request, caching operations
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- H—ELECTRICITY
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- 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
- H04N21/47217—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 for controlling playback functions for recorded or on-demand content, e.g. using progress bars, mode or play-point indicators or bookmarks
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Abstract
The application provides a live broadcast playback method, a live broadcast playback system, electronic equipment and a storage medium, wherein the method comprises the steps of obtaining data to be played back, wherein the data to be played back comprises a target video address and an operation signaling address; acquiring an operation signaling based on an operation signaling address, and classifying and storing the operation signaling according to signaling types to obtain a plurality of operation signaling sets of different signaling types; controlling the player to access the target video address so as to play the target video indicated by the target video address on the screen; in the live broadcast playback process, the current play time point of the target video is determined, the target operation signaling corresponding to the current play time point is called from the operation signaling set, and the operation content corresponding to the target operation signaling is displayed while the target video is played on the screen. During playback, the live broadcast process is restored according to the acquired audio and video and the plurality of operation signaling in a free combination mode, the display form of live broadcast playback can be changed at will, and the flexibility is higher.
Description
Technical Field
The present application relates to the field of online education technologies, and in particular, to a live playback method, a live playback system, an electronic device, and a storage medium.
Background
With the popularization of online education application, in order to meet the review requirement of students after class, a recording and playback scheme of interactive live broadcast teaching video is correspondingly provided.
However, in general live broadcast recording, a client pulls a teacher-side video stream and interactive classroom data, and generates a teaching video for playback in a mode of capturing a screen and recording a client screen. However, only one playback video is generated in the screen-grabbing and recording mode during live broadcasting, the playback video is the same as the live video, the storage space occupied by the video is large, the replacement of a playback interface cannot be realized, and the flexibility is low.
Disclosure of Invention
In view of this, an object of the present application is to provide a live playback method, a live playback system, an electronic device, and a storage medium, in which audio and video and multiple operation signaling in a live playback process are stored separately, a storage space is small, a live playback process is restored according to the obtained audio and video and multiple operation signaling during playback, a display form of live playback can be changed at will, a layout of a live playback process can be performed again by using a custom template, and flexibility is higher.
In a first aspect, the present application provides a live playback method, including:
acquiring data to be played back, wherein the data to be played back comprises a target video address and an operation signaling address;
acquiring an operation signaling based on the operation signaling address, and classifying and storing the operation signaling according to signaling types to obtain a plurality of operation signaling sets of different signaling types;
controlling a player to access the target video address so as to play the target video indicated by the target video address on a screen;
in the live broadcast playback process, the current playing time point of the target video is determined, a target operation signaling corresponding to the current playing time point is called from the operation signaling set, and the operation content corresponding to the target operation signaling is displayed while the target video is played on a screen.
Preferably, the data to be played back is obtained by:
sending a live broadcast playback request to a server, wherein the live broadcast playback request carries a live broadcast room identifier and a requester identifier;
receiving data to be played back returned in response to the live playback request from a server;
wherein the data to be played back is obtained by the server by:
and performing authority verification on the requester based on the requester identifier, and acquiring a target video address for storing a target video corresponding to the live broadcast room identifier and an operation signaling address for storing an operation signaling file corresponding to the live broadcast room identifier after the authority verification on the requester is passed.
Preferably, the controlling player accesses the target video address to play the target video indicated by the target video address, including:
initializing a player;
and transmitting the target video address into the player so that the player pulls a video stream from the target video address to play the target video.
Preferably, the method further comprises:
and after the live broadcast playback process is finished, destroying the player and deleting the stored operation signaling set.
Preferably, the operation signaling comprises a recording starting signaling, a courseware adding signaling, a courseware page turning signaling, a painting brush adding signaling, a chat signaling and a recording stopping signaling;
the recording starting signaling is used for enabling a server to start recording operation aiming at a live broadcast room;
the courseware adding signaling is used for enabling the server to store courseware content addresses carried in the courseware adding signaling;
the courseware page turning signaling is used for enabling the server to record page turning numbers and page turning operation time in the live broadcast process;
the painting brush adding signaling is used for enabling a server to record the operation record of the painting brush, the coordinates of the point set and the operation time of the painting brush in the live broadcast process;
the chat signaling is used for enabling the server to record chat contents and chat time in the live broadcast process;
the recording stopping signaling is used for enabling the server to stop recording operation aiming at the live broadcast room.
Preferably, the target operation signaling comprises: one or more of the courseware adding signaling, the courseware page turning signaling, the paintbrush adding signaling and the chat signaling;
the displaying the operation content corresponding to the target operation signaling while the target video is played on the screen comprises:
if the target operation signaling is the courseware adding signaling, courseware information is obtained, and a courseware picture obtained by transcoding the courseware information is displayed while the target video is played on a screen;
if the target operation signaling is the courseware page turning signaling, turning the displayed courseware picture according to the page number of the corresponding record;
if the target operation signaling is the painting brush adding signaling, displaying an operation record of a corresponding painting brush while playing the target video on a screen;
and if the target operation signaling is the chat signaling, displaying the corresponding recorded chat content while playing the target video on a screen.
Preferably, the target video comprises a video of a speaker for a live room, the screen comprising a first display area and a second display area;
the displaying the operation content corresponding to the target operation signaling while the target video is played on the screen comprises:
playing a video of a speaker for a live room in a first display area of a screen;
displaying the operation content corresponding to the target operation signaling in a second display area of the screen;
and/or the target operation signaling comprises a plurality of sub-operation signaling, the second display area comprises a plurality of sub-display areas,
the displaying the operation corresponding to the target operation signaling in the second display area of the screen comprises:
determining the signaling type of each operation signaling;
and performing regional display on the operation contents corresponding to the plurality of operation signaling according to the signaling types, wherein the operation contents corresponding to the operation signaling with one or more signaling types are displayed in one sub-display region.
In a second aspect, the present application provides a live playback system, including a client and a server;
the client is used for acquiring data to be played back, and the data to be played back comprises a target video address and an operation signaling address; acquiring an operation signaling based on the operation signaling address, and classifying and storing the operation signaling according to signaling types to obtain a plurality of operation signaling sets of different signaling types; controlling a player to access the target video address so as to play the target video indicated by the target video address on a screen; in the live broadcast playback process, determining the current playing time point of the target video, calling a target operation signaling corresponding to the current playing time point from the operation signaling set, and displaying operation content corresponding to the target operation signaling while playing the target video on a screen;
the server is used for recording all operation signaling in a live broadcast room, storing all the operation signaling as a signaling file and determining an operation signaling address corresponding to the signaling file; simultaneously pulling a video stream of a speaker, storing the video stream of the speaker as a video file, and determining a target video address corresponding to the video file; and saving the operation signaling address and the target video address to obtain data to be played back.
In a third aspect, the present application further provides an electronic device, including: a processor, a memory and a bus, the memory storing machine-readable instructions executable by the processor, the processor and the memory communicating over the bus when the electronic device is operating, the machine-readable instructions when executed by the processor performing the steps of the live playback method as described above.
In a fourth aspect, the present application further provides a computer-readable storage medium, on which a computer program is stored, where the computer program is executed by a processor to perform the steps of the live playback method as described above.
The application provides a live playback method, a live playback system, an electronic device and a storage medium, wherein the live playback method comprises the following steps: acquiring data to be played back, wherein the data to be played back comprises a target video address and an operation signaling address; acquiring an operation signaling based on the operation signaling address, and classifying and storing the operation signaling according to signaling types to obtain a plurality of operation signaling sets of different signaling types; controlling a player to access the target video address so as to play the target video indicated by the target video address on a screen; in the live broadcast playback process, the current playing time point of the target video is determined, a target operation signaling corresponding to the current playing time point is called from the operation signaling set, and the operation content corresponding to the target operation signaling is displayed while the target video is played on a screen.
Compared with the mode of screen grabbing and recording during live broadcasting in the prior art, the method and the device have the advantages that the audio and video and the operation signaling in the live broadcasting process are respectively stored, the storage space is small, the live broadcasting process is restored according to the acquired audio and video and the operation signaling in a free combination mode during playback, the display form of live broadcasting playback can be changed at will, the layout of the live broadcasting playback process can be carried out again by utilizing a user-defined template, and the flexibility is higher.
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 is a flowchart of a live playback method provided in an embodiment of the present application;
fig. 2 is a flowchart of a live broadcast process provided in an embodiment of the present application;
fig. 3 is a flowchart of a playback process provided in an embodiment of the present application;
fig. 4 is a schematic structural diagram of a live playback system provided in an embodiment of the present application;
fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. Every other embodiment that can be obtained by a person skilled in the art without making creative efforts based on the embodiments of the present application falls within the protection scope of the present application.
First, an application scenario to which the present application is applicable will be described. The method can be applied to the technical field of online education, and with the rapid development of information technology, especially from the Internet to the mobile Internet, space-time-crossing living, working and learning modes are created, so that the mode of acquiring knowledge is fundamentally changed. The teaching and learning can be free from the limitation of time, space and place conditions, and the knowledge acquisition channel becomes flexible and diversified. Online education refers to education in which courses are delivered outside the campus via audio, video (live or video), and computer technologies including real-time and non-real-time. In the current online education related system, the solution for video recording of a virtual classroom is usually realized by recording the display process or the live broadcast process of the whole virtual classroom as a complete video locally or at a server side, and playing back the video locally or remotely when the video recording is needed.
But video is a presentation form with high data and computation requirements and the overhead for storage is large. The more sessions, the longer the session time, whether local or on a server, the greater the overhead for local storage or network traffic, and this is more evident to the mobile device. In addition, because the common live broadcast recording usually adopts a client to pull the teacher video stream and the interactive classroom data, and generates teaching video playback by capturing the screen and recording the screen of the client, only one playback video is generated by the capturing and recording mode during live broadcast, and the playback video is the same as the live broadcast video, so that the display form of a live broadcast playback interface cannot be changed, customized interface customization and interaction cannot be realized, and the flexibility is low.
Based on this, the embodiment of the application provides a live broadcast playback method, a live broadcast playback system, an electronic device and a storage medium, wherein audio and video and a plurality of operation signaling in the live broadcast process are respectively stored, the storage space is small, the live broadcast process is restored according to the acquired audio and video and the plurality of operation signaling during playback by free combination, the display form of the live broadcast playback can be changed at will, the layout of the live broadcast playback process can be performed again by using a custom template, and the flexibility is higher.
Referring to fig. 1, fig. 1 is a flowchart of a live playback method according to an embodiment of the present disclosure. As shown in fig. 1, in the live playback method provided in the embodiment of the present application, a client is used as an execution subject, and the client may be a mobile phone or a web page. The method comprises the following steps:
s110, obtaining data to be played back, wherein the data to be played back comprises a target video address and an operation signaling address.
Here, the live process can be restored with the data to be played back. The data to be played back comprises a target video address and an operation signaling address, the target video can be downloaded through the target video address, and the operation signaling can be downloaded through the operation signaling address, wherein the target video is audio and video recorded in a live broadcast room, the operation signaling is signaling corresponding to each operation content in the live broadcast room, and the operation content can be courseware adding, courseware page turning, painting brush adding, chatting and the like.
S120, obtaining the operation signaling based on the operation signaling address, and classifying and storing the operation signaling according to signaling types to obtain a plurality of operation signaling sets with different signaling types.
Here, the signaling type may be classified according to different initiating objects, for example, the signaling corresponding to the teacher's operation content is classified into an operation signaling set, and the signaling corresponding to the student's operation content is classified into an operation signaling set; the sorting may be by function, such as grouping courseware-related content into a collection, chat-related content into an action signaling collection, brush-related content into an action signaling collection, and so forth.
It should be noted that one operation signaling address corresponds to all operation signaling, that is, all operation signaling can be downloaded by accessing one operation signaling address. In addition, the set signaling address corresponding to a plurality of operation signaling sets of different signaling types can be accessed through one operation signaling address, and then the signaling in the operation signaling set can be downloaded by accessing the set signaling address.
S130, controlling a player to access the target video address so as to play the target video indicated by the target video address on a screen; in the live broadcast playback process, the current playing time point of the target video is determined, a target operation signaling corresponding to the current playing time point is called from the operation signaling set, and the operation content corresponding to the target operation signaling is displayed while the target video is played on a screen.
The operation content corresponding to the target operation signaling is displayed while the target video is played on the screen, the operation content corresponding to the target operation signaling can be added into the target video corresponding to the playing time point, the operation content corresponding to the target operation signaling and the target video corresponding to the playing time point can be displayed in a split screen mode, and the target video and the operation content corresponding to the same playing time point can be displayed simultaneously according to a preset template or a self-defined template.
The user-defined template can be a three-screen template, for example, the left area is a random area and can play contents on a blackboard, the upper right area is a video of a teacher, the lower right area is a chat list of the teacher and students, and the contents presented in the three areas can be randomly combined and distributed.
Specifically, the player can access the target video address, so as to play the target video on the screen, and in the live broadcast playback process, according to the current playing time point of the target video, a target operation signaling corresponding to the current playing time point is rendered into the target video to be played together; and a target operation signaling corresponding to the current playing time point can be found, and then the operation content corresponding to the target operation signaling is independently played in one region on the screen, the position of the region can be freely selected, namely, the target video and the operation content in the live broadcast room are displayed in a split screen mode, but the playing time points are ensured to be mutually corresponding, so that the process of the live broadcast room is restored.
In addition, the corresponding signaling time point can be added to each operation signaling while the operation signaling is acquired in the live broadcast room, so that the time of each operation signaling in the live broadcast room is known, then the playing time point of the target video is acquired, the signaling time point is compared with the playing time point, and when the signaling time point is consistent with the playing time point, the operation content corresponding to the operation signaling corresponding to the current signaling time point and the target video corresponding to the current playing time point are played simultaneously. The playing mode is the same as above.
Here, the operation content corresponding to the target operation signaling includes page turning, paint brush adding, paint brush deleting, chatting, PTT courseware uploading, and the like.
The live broadcast playback method provided by the embodiment of the application comprises the following steps: acquiring data to be played back, wherein the data to be played back comprises a target video address and an operation signaling address; acquiring an operation signaling based on an operation signaling address, and classifying and storing the operation signaling according to signaling types to obtain a plurality of operation signaling sets of different signaling types; controlling the player to access the target video address so as to play the target video indicated by the target video address on the screen; in the live broadcast playback process, the current play time point of the target video is determined, a target operation signaling corresponding to the current play time point is called from the operation signaling set, and the operation content corresponding to the target operation signaling is displayed while the target video is played on the screen. Compared with the mode of screen grabbing and recording during live broadcasting in the prior art, the method and the device have the advantages that the audio and video and the operation signaling in the live broadcasting process are respectively stored, the storage space is small, the live broadcasting process is restored according to the acquired audio and video and the operation signaling in a free combination mode during playback, the display form of live broadcasting playback can be changed at will, the layout of the live broadcasting playback process can be carried out again by utilizing a user-defined template, and the flexibility is higher.
In the embodiment of the present application, as a preferred embodiment, the step S110 obtains the data to be played back by:
sending a live broadcast playback request to a server, wherein the live broadcast playback request carries a live broadcast room identifier and a requester identifier; receiving data to be played back returned in response to the live playback request from a server;
wherein the data to be played back is obtained by the server by:
and performing authority verification on the requester based on the requester identifier, and acquiring a target video address for storing a target video corresponding to the live broadcast room identifier and an operation signaling address for storing an operation signaling file corresponding to the live broadcast room identifier after the authority verification on the requester is passed.
Here, the live broadcast room identifier may be a live broadcast room number or a live broadcast room address, and the requester identifier may be a mobile phone number, a name, an identity card number, a login password, or the like of the requester.
For example, the following steps are carried out: take student's playback live broadcast as an example, the student initiates the live broadcast playback request, input own name at the client promptly, cell-phone number and live broadcast room number, the server carries out the authority verification, verify student's name and cell-phone number in combination with this live broadcast room number promptly, judge whether the student has the authority of visiting this live broadcast room, after the authority verification passes through, the server will return the data of waiting to replay that correspond with this live broadcast room for the client, like this, the student just can visit the live broadcast content that this live broadcast room corresponds at the client, wherein, when playback this live broadcast, the student can freely select the playback mode, can replay according to preset template, also can freely adjust playback display area and size etc..
In the embodiment of the present application, as a preferred embodiment, the step S130 includes:
initializing a player; and transmitting the target video address into the player so that the player pulls a video stream from the target video address to play the target video.
Here, the player is initialized before each play so that the player starts playing the target video from the beginning. After the player acquires the target video address, the player can play the target video by accessing the target video address to pull the video stream.
In the embodiment of the present application, as a preferred embodiment, the method further includes:
and after the live broadcast playback process is finished, destroying the player and deleting the stored operation signaling set.
Here, in order to reduce the memory usage and save the storage resources, after the live playback process is finished each time, the player is destroyed and the stored operation signaling set is deleted, so as to leave a space for the next live playback.
In the embodiment of the present application, as a preferred embodiment, the target video includes a video of a speaker for a live room, and the screen includes a first display area and a second display area; the second display area may also be divided into a plurality of sub-display areas.
The displaying the operation content corresponding to the target operation signaling while the target video is played on the screen comprises: playing a video of a speaker for a live room in a first display area of a screen; displaying the operation content corresponding to the target operation signaling in a second display area of the screen; and/or the target operation signaling comprises a plurality of sub-operation signaling, the second display area comprises a plurality of sub-display areas, and the second display area of the screen displays the operation content corresponding to the target operation signaling, and the method comprises the following steps: determining the signaling type of each operation signaling; and performing regional display on the operation contents corresponding to the plurality of operation signaling according to the signaling types, wherein the operation contents corresponding to the operation signaling with one or more signaling types are displayed in one sub-display region.
In the step, the video of the speaker can be displayed in a split screen mode with the operation content in the live broadcast room, and the operation content in the live broadcast room can be partially rendered into the video of the speaker. When split-screen display is performed, the positions of the first display area and the second display area included in the screen can be freely changed on the screen, and similarly, the positions of the plurality of sub-display areas included in the second display area can also be freely changed on the screen.
Here, the operation contents corresponding to the plurality of operation signaling are displayed in a sub-display area according to the signaling type, wherein the operation contents corresponding to the operation signaling of one signaling type or the operation contents corresponding to the operation signaling of a plurality of signaling types can be displayed in one sub-display area.
Preferably, the operation signaling comprises a recording starting signaling, a courseware adding signaling, a courseware page turning signaling, a painting brush adding signaling, a chat signaling and a recording stopping signaling; the recording starting signaling is used for enabling a server to start recording operation aiming at a live broadcast room; the courseware adding signaling is used for enabling the server to store courseware content addresses carried in the courseware adding signaling; the courseware page turning signaling is used for enabling the server to record page turning numbers and page turning operation time in the live broadcast process; the painting brush adding signaling is used for enabling a server to record the operation record of the painting brush, the coordinates of the point set and the operation time of the painting brush in the live broadcast process; the chat signaling is used for enabling the server to record chat contents and chat time in the live broadcast process; the recording stopping signaling is used for enabling the server to stop recording operation aiming at the live broadcast room.
The embodiment of the present application only lists the operation signaling commonly used in the live broadcast, but is not limited thereto, and the principles of other operation signaling are the same as those of the operation signaling, and are not described herein again.
Referring to fig. 2, fig. 2 is a flowchart of a live broadcasting process according to an embodiment of the present application, and as shown in fig. 2, in the live broadcasting process, audio and video of a speaker are recorded by pull streaming, and audio and video data streams are written into a file in real time. Firstly, from the beginning of a class, a recording starting signaling is sent to inform a server to start classroom recording; then when the teacher adds the courseware, a courseware adding signaling is sent, and the courseware adding signaling carries a courseware content address; when the teacher turns the pages of the courseware, a courseware page turning signaling is sent, and page numbers of the page turning and the operation time of the page turning are recorded; when a teacher increases a painting brush, sending a painting brush increasing signaling, and recording the operation record of the painting brush, the coordinates of the point set and the operation time of the painting brush; when the teacher and the student have chat interaction, sending a chat signaling, and recording chat contents and chat time; when the teacher performs other service operations, a corresponding signaling is also sent, and the contents and time of the other service operations are recorded; when the live broadcast is in class, the cloud recording is stopped, a recording stopping signaling is sent, the recording operation aiming at the live broadcast room is stopped, and all the signaling sent in the live broadcast process is stored in a file. Finally, after class break, the pull stream is also stopped, and the video file is saved, wherein the video format can be mp4, flv and the like.
Specifically, the target operation signaling includes: one or more of the courseware adding signaling, the courseware page turning signaling, the paintbrush adding signaling and the chat signaling; the target operation signaling is the operation signaling which needs to be downloaded during live playback.
The displaying the operation content corresponding to the target operation signaling while the target video is played on the screen comprises: if the target operation signaling is the courseware adding signaling, courseware information is obtained, and a courseware picture obtained by transcoding the courseware information is displayed while the target video is played on a screen; if the target operation signaling is the courseware page turning signaling, turning the displayed courseware picture according to the page number of the corresponding record; if the target operation signaling is the painting brush adding signaling, displaying an operation record of a corresponding painting brush while playing the target video on a screen; and if the target operation signaling is the chat signaling, displaying the corresponding recorded chat content while playing the target video on a screen.
Referring to fig. 3, fig. 3 is a flowchart of a playback process according to an embodiment of the present application, and as shown in fig. 3, a target video address and an operation signaling address are obtained according to a live playback request server interface; downloading operation signaling and loading the operation signaling into a memory respectively according to the signaling types (different types carry out different set storage); initializing a recorded video of a speaker, transmitted by a player, monitoring a time stamp of the player, performing binary search on an operation signaling corresponding to a time node in an operation signaling set according to the time stamp, and calling back to a client; acquiring courseware information according to the courseware adding signaling, taking the address of the courseware, and displaying courseware pictures obtained by transcoding the courseware information while playing the recorded video of the speaker on a screen; turning pages of the displayed courseware pictures according to the page numbers of the corresponding records according to the courseware page turning signaling; when all signaling or the latest signaling is required to be returned, for example, the chat should be returned in full amount, and the chat content corresponding to the record is displayed while the recorded video is played on the screen, if the data volume is too large, the number of the chat content can be limited, the current page only needs to return the latest courseware page turning signaling, the painting brush only needs to return the painting brush increasing signaling corresponding to the current page number, and the operation record of the corresponding painting brush is displayed while the recorded video is played on the screen; destroy the player and clear the set of operational signaling.
For example, the following steps are carried out: when the live broadcast is played back, the live broadcast is divided into two parts, wherein one part is a target video file, and the other part is an operation signaling file, wherein the target video is obtained by independently playing and recording the stream. When live broadcast playback is carried out, a live broadcast playback request is sent to a server, a server background interface is requested to tell the server what the room number is, the server finds all json files recording corresponding video files and all operation signaling, then students download the two files on mobile phones after responding to the live broadcast playback request, the first step is to completely analyze the operation signaling files, for example, which are chatted, which are paintbrushes and which are translated, and the operation signaling files are stored, and then the player is initialized, because the target video is taken, the player starts to play.
Here, the player has a timestamp, say a minute of video, 0 to 60 seconds, and each second has a callback, tells the server the progress of playing, goes to operate the operation signaling collection in order to call out the operation signaling that corresponds to the play time point according to the progress of playing, say in the live broadcast process, the teacher clicks the button of going to class, the teacher sends a chat in 1 st second: "family is good", the player broadcasts to 1 st second, will fetch the message of this 1 st second from chatting the corresponding operation signaling file, then show the teacher's words in the chat area: "good family". The operation signaling is intercepted by a timestamp of the player, and different operation signaling has different operation modes, such as a painting brush, so that the painting brush is displayed; the chat is displayed in the chat frame, the same effect as the live broadcast is achieved, and the whole process of the live broadcast is restored.
In the process of entering the playback room, it is necessary to ensure that the two addresses (the target video address and the operation signaling address) are acquired at the same time for entry, that is, two addresses can be acquired by sending a live playback request.
According to the live broadcast playback method provided by the embodiment of the application, when live broadcast is recorded, audio and video and operation signaling are respectively stored into one file, and a file address corresponding to each file is obtained, namely the video address and the operation signaling address are determined as data to be played back; and then, during live broadcast playback, the client acquires the data to be played back, downloads and preprocesses the signaling data according to the operation signaling address in the data to be played back, acquires a video according to the video address in the data to be played back, renders the operation signaling into the video or displays the operation signaling and the video in a subarea mode simultaneously so as to restore the live broadcast process, and quits live broadcast after the live broadcast process is completely restored.
The method includes the steps that recorded videos of teachers are stored as an independent video file, all operation signaling during live broadcasting is stored as an independent file, the recorded videos and all the operation signaling are obtained simultaneously during live broadcasting playback, playback is conducted in a partial rendering or regional display mode, and a display interface can be changed.
Based on the same inventive concept, a live playback system corresponding to the live playback method is also provided in the embodiments of the present application, and as the principle of solving the problem of the system installation in the embodiments of the present application is similar to the live playback method described above in the embodiments of the present application, reference may be made to the implementation of the method for implementing the system, and repeated details are not described again.
Referring to fig. 4, fig. 4 is a schematic structural diagram of a live playback system according to an embodiment of the present application. As shown in fig. 4, the live playback system 400 includes a client 410 and a server 420;
the client 410 is configured to obtain data to be played back, where the data to be played back includes a target video address and an operation signaling address; acquiring an operation signaling based on the operation signaling address, and classifying and storing the operation signaling according to signaling types to obtain a plurality of operation signaling sets of different signaling types; controlling a player to access the target video address so as to play the target video indicated by the target video address on a screen; in the live broadcast playback process, determining the current playing time point of the target video, calling a target operation signaling corresponding to the current playing time point from the operation signaling set, and displaying operation content corresponding to the target operation signaling while playing the target video on a screen;
the server 420 is configured to record all operation signaling in the live broadcast room, store all operation signaling as a signaling file, and determine an operation signaling address corresponding to the signaling file; simultaneously pulling a video stream of a speaker, storing the video stream of the speaker as a video file, and determining a target video address corresponding to the video file; and saving the operation signaling address and the target video address to obtain data to be played back.
Here, the server 420 is a recording server, that is, a server on a live platform, and has the following functions: the student enters a live broadcast room, the server receives all operation signaling in a live broadcast classroom and stores the operation signaling into a file, one file is audio and video stream, the other file is PPT courseware or paintbrushes and the like uploaded in the classroom, and the recording server can store the file stream and record the signaling.
Specifically, the server 420 records all operation signaling in the live broadcast room during the live broadcast process, and stores all the operation signaling as one signaling file to obtain an operation signaling address corresponding to the signaling file, so that the client can download the operation signaling according to the operation signaling address (i.e., the signaling file address), and meanwhile, the server pulls the video stream of the speaker and stores the video stream as one video file to obtain a target video address corresponding to the video file, so that the client can download the live broadcast video according to the target video address (i.e., the video file address).
Here, the format of the signaling file may be all.json, and the format of the video file may be mp4 or flv, etc.
For example, the following steps are carried out: in the live broadcast process, a teacher clicks the cloud end to record when in class, then the cloud end is started to record, namely a recording instruction is sent to the server, and after the server receives the recording instruction, the program is started to start recording all signaling in the live broadcast room (the teacher draws a line on a drawing board, writes a word, holds hands of students, and gives a speech to the students can correspond to an instruction, and the signaling is stored in a file).
Therefore, the operation content during live broadcasting is stored as a file in a signaling mode, and the signaling timestamp is the relative time of live broadcasting, so that the recorded video can be played and the signaling can be completely matched.
The live broadcast playback system provided by the embodiment of the application stores the audio and video and the operation signaling in the live broadcast process respectively, the storage space is small, the live broadcast process is restored according to the acquired audio and video and the operation signaling in a free combination mode during playback, the display form of the live broadcast playback can be changed at will, the layout of the live broadcast playback process can be carried out again by utilizing the custom template, and the flexibility is higher.
Referring to fig. 5, fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure. As shown in fig. 5, the electronic device 500 includes a processor 510, a memory 520, and a bus 530.
The memory 520 stores machine-readable instructions executable by the processor 510, when the electronic device 500 runs, the processor 510 communicates with the memory 520 through the bus 530, and when the machine-readable instructions are executed by the processor 510, the steps of the live playback method in the embodiment of the method shown in fig. 1 may be executed.
An embodiment of the present application further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the steps of the live playback method in the method embodiment shown in fig. 1 may be executed.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some communication interfaces, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a non-volatile computer-readable storage medium executable by a processor. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present application, and are used for illustrating the technical solutions of the present application, but not limiting the same, and the scope of the present application is not limited thereto, and although the present application is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope disclosed in the present application; such modifications, changes or substitutions do not depart from the spirit and scope of the exemplary embodiments of the present application, and are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. A live playback method, the method comprising:
acquiring data to be played back, wherein the data to be played back comprises a target video address and an operation signaling address;
acquiring an operation signaling based on the operation signaling address, and classifying and storing the operation signaling according to signaling types to obtain a plurality of operation signaling sets of different signaling types;
controlling a player to access the target video address so as to play the target video indicated by the target video address on a screen;
in the live broadcast playback process, the current playing time point of the target video is determined, a target operation signaling corresponding to the current playing time point is called from the operation signaling set, and the operation content corresponding to the target operation signaling is displayed while the target video is played on a screen.
2. The method of claim 1, wherein the data to be played back is obtained by:
sending a live broadcast playback request to a server, wherein the live broadcast playback request carries a live broadcast room identifier and a requester identifier;
receiving data to be played back returned in response to the live playback request from a server;
wherein the data to be played back is obtained by the server by:
and performing authority verification on the requester based on the requester identifier, and acquiring a target video address for storing a target video corresponding to the live broadcast room identifier and an operation signaling address for storing an operation signaling file corresponding to the live broadcast room identifier after the authority verification on the requester is passed.
3. The method of claim 1, wherein the controlling player accessing the target video address to play the target video indicated by the target video address comprises:
initializing a player;
and transmitting the target video address into the player so that the player pulls a video stream from the target video address to play the target video.
4. The method of claim 1, further comprising:
and after the live broadcast playback process is finished, destroying the player and deleting the stored operation signaling set.
5. The method of claim 1, wherein the operation signaling comprises start recording signaling, add courseware signaling, page turn courseware signaling, add brush signaling, chat signaling, and stop recording signaling;
the recording starting signaling is used for enabling a server to start recording operation aiming at a live broadcast room;
the courseware adding signaling is used for enabling the server to store courseware content addresses carried in the courseware adding signaling;
the courseware page turning signaling is used for enabling the server to record page turning numbers and page turning operation time in the live broadcast process;
the painting brush adding signaling is used for enabling a server to record the operation record of the painting brush, the coordinates of the point set and the operation time of the painting brush in the live broadcast process;
the chat signaling is used for enabling the server to record chat contents and chat time in the live broadcast process;
the recording stopping signaling is used for enabling the server to stop recording operation aiming at the live broadcast room.
6. The method of claim 5, wherein the target operation signaling comprises: one or more of the courseware adding signaling, the courseware page turning signaling, the paintbrush adding signaling and the chat signaling;
the displaying the operation content corresponding to the target operation signaling while the target video is played on the screen comprises:
if the target operation signaling is the courseware adding signaling, courseware information is obtained, and a courseware picture obtained by transcoding the courseware information is displayed while the target video is played on a screen;
if the target operation signaling is the courseware page turning signaling, turning the displayed courseware picture according to the page number of the corresponding record;
if the target operation signaling is the painting brush adding signaling, displaying an operation record of a corresponding painting brush while playing the target video on a screen;
and if the target operation signaling is the chat signaling, displaying the corresponding recorded chat content while playing the target video on a screen.
7. The method of claim 1, wherein the target video comprises a video of a presenter to a live room, and wherein the screen comprises a first display area and a second display area;
the displaying the operation content corresponding to the target operation signaling while the target video is played on the screen comprises:
playing a video of a speaker for a live room in a first display area of a screen;
displaying the operation content corresponding to the target operation signaling in a second display area of the screen;
and/or the target operation signaling comprises a plurality of sub-operation signaling, the second display area comprises a plurality of sub-display areas,
the displaying the operation corresponding to the target operation signaling in the second display area of the screen comprises:
determining the signaling type of each operation signaling;
and performing regional display on the operation contents corresponding to the plurality of operation signaling according to the signaling types, wherein the operation contents corresponding to the operation signaling with one or more signaling types are displayed in one sub-display region.
8. A live playback system, comprising a client and a server;
the client is used for acquiring data to be played back, and the data to be played back comprises a target video address and an operation signaling address; acquiring an operation signaling based on the operation signaling address, and classifying and storing the operation signaling according to signaling types to obtain a plurality of operation signaling sets of different signaling types; controlling a player to access the target video address so as to play the target video indicated by the target video address on a screen; in the live broadcast playback process, determining the current playing time point of the target video, calling a target operation signaling corresponding to the current playing time point from the operation signaling set, and displaying operation content corresponding to the target operation signaling while playing the target video on a screen;
the server is used for recording all operation signaling in a live broadcast room, storing all the operation signaling as a signaling file and determining an operation signaling address corresponding to the signaling file; simultaneously pulling a video stream of a speaker, storing the video stream of the speaker as a video file, and determining a target video address corresponding to the video file; and saving the operation signaling address and the target video address to obtain data to be played back.
9. An electronic device, comprising: a processor, a memory and a bus, the memory storing machine-readable instructions executable by the processor, the processor and the memory communicating via the bus when the electronic device is operating, the processor executing the machine-readable instructions to perform the steps of the live playback method of any one of claims 1 to 7.
10. A computer-readable storage medium, having a computer program stored thereon, which, when executed by a processor, performs the steps of the live playback method as claimed in any one of claims 1 to 7.
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