CN113873288A - Method and device for generating playback in live broadcast process - Google Patents
Method and device for generating playback in live broadcast process Download PDFInfo
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- CN113873288A CN113873288A CN202111454648.2A CN202111454648A CN113873288A CN 113873288 A CN113873288 A CN 113873288A CN 202111454648 A CN202111454648 A CN 202111454648A CN 113873288 A CN113873288 A CN 113873288A
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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]
- H04N21/40—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
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/845—Structuring of content, e.g. decomposing content into time segments
- H04N21/8456—Structuring of content, e.g. decomposing content into time segments by decomposing the content in the time domain, e.g. in time segments
Abstract
The application provides a method and a device for generating playback in a live broadcast process, wherein the method comprises the steps of obtaining a live broadcast playback request parameter; retrieving a video slice file corresponding to the live playback request parameter by using the live playback request parameter; and generating a playback video file by using the retrieved video slice file. According to some embodiments of the application, the video slice file corresponding to the live broadcast request is retrieved and the playback video is generated in the live broadcast process, so that the playback video can be generated in the live broadcast process, the live broadcast playback does not need to be checked after the live broadcast is finished, the time of a user is saved, and the live broadcast content can be spread in time more conveniently.
Description
Technical Field
The application relates to the field of internet, and particularly relates to a method and a device for generating playback in a live broadcast process.
Background
Currently, enterprise live broadcast becomes an important form for enterprise marketing, customer acquisition and business application, is a key path for realizing digital transformation of enterprises, and is widely applied to multiple industries such as medical treatment, education, finance and the like and multiple application scenes such as live broadcast of activities, enterprise training and the like. The enterprise live broadcast not only reduces organization and labor cost, realizes cost reduction and efficiency improvement for the enterprise, but also promotes enterprise business innovation and product upgrading.
In the enterprise live broadcast scene, after a host initiates live broadcast, audiences can enter a live broadcast room of a host user through a login website to watch live broadcast video. In the live broadcasting process of enterprises, the situation that audiences miss part of live broadcasting content or want to watch part of live broadcasting content again often occurs, and wonderful content in a certain time period is likely to be shared and spread rapidly in the live broadcasting marketing process. Thus, the viewer user's need to generate playback during live broadcast is still large.
In the prior art, the live broadcast technology based on the HLS protocol enables a user to directly play a live broadcast video according to a live broadcast link through a browser without installing any independent player software. The basic working principle of the HLS is that when a main broadcast end collects and pushes a stream to a streaming media server, the server encapsulates a received live stream into a new video file every time the live stream is cached for a period of time, and meanwhile, the server establishes an m3u8 fragment locking file to maintain the index information of a plurality of latest video slice files. The user acquires the latest video slice file through the m3u8 slice index file and plays the latest video slice file.
Therefore, the live broadcast platform based on the HLS protocol generates playback videos according to the starting time point and the ending time point of each live broadcast activity, and releases the playback videos of the whole live broadcast after the playback videos of all definition gears of each live broadcast are generated. And from the end of the live broadcast to the generation of the video playback, many steps are often required, such as transcription, transcoding, uploading, and the like. One hour of live broadcasting may take one hour to generate playback video, which is inefficient and affects user experience.
Disclosure of Invention
The application provides a method and a device for generating playback in a live broadcast process, which can solve the problem that playback cannot be generated in the live broadcast process.
According to one aspect of the application, a method for generating playback in a live broadcast process is provided, and the method comprises the steps of obtaining a live broadcast playback request parameter; retrieving a video slice file corresponding to the live playback request parameter by using the live playback request parameter; and generating a playback video file by using the retrieved video slice file.
According to some embodiments, the live playback request parameter comprises a live room identification, a requested playback start time and/or a requested playback end time.
According to some embodiments, the retrieving the video slice file corresponding to the live playback request parameter according to the live playback request parameter includes acquiring video slice file information corresponding to the live broadcast room identifier by using the live broadcast room identifier, where the video slice file information includes a slice name, a slice start timestamp, a slice video duration, whether a key frame starts, a video aspect ratio, a file storage size, and/or a recording duration of this time; determining screening time according to the video slice file information; and filtering the retrieved video slice file information according to the screening time to obtain a video slice file corresponding to the screening time.
According to some embodiments, said generating a playback video file using the retrieved video slice file comprises converting the slice start timestamp of the video slice file to a relative time corresponding to a start time point of the live broadcast; and generating a playback video file by using the converted video slice file.
According to some embodiments, prior to retrieving the video slice file corresponding to the live playback request parameter using the live playback request parameter, the method further comprises generating a video slice file corresponding to the live playback request.
According to some embodiments, retrieving a document presentation message corresponding to the live playback request parameter; and/or retrieving chat messages corresponding to the live playback request parameters.
According to some embodiments, after generating a playback video file using the retrieved video slice file, the method further comprises generating a playback video using the playback video file, the document presentation message, and/or the chat message.
According to some embodiments, said generating a playback video using said playback video file, said document presentation message, and/or said chat message comprises generating a message text file using said document presentation message and/or said chat message; and generating a playback video by using the playback video file and the message text file.
According to some embodiments, prior to retrieving the document presentation message corresponding to the live playback request parameter, the method further comprises generating a document presentation message corresponding to the live playback request parameter; and/or prior to retrieving the chat message corresponding to the live playback request parameter, the method further comprises generating the chat message corresponding to the live playback request parameter.
According to an aspect of the present application, a device for generating playback in a live broadcast process is provided, where the device includes a live broadcast playback request parameter obtaining unit, configured to obtain a live broadcast playback request parameter; the video slice file retrieval unit is used for retrieving a video slice file corresponding to the live playback request according to the live playback request parameter; a playback video file generating unit for generating a playback video file using the retrieved video slice file.
According to an aspect of the present application, an apparatus for generating playback during live broadcasting is provided, the apparatus comprising one or more processors; storage means for storing one or more programs;
when executed by the one or more processors, cause the one or more processors to implement the method as previously described.
According to some embodiments of the application, the video slice file corresponding to the live broadcast request is retrieved and the playback video is generated in the live broadcast process, so that the playback video can be generated in the live broadcast process, the live broadcast playback does not need to be checked after the live broadcast is finished, the time of a user is saved, and the live broadcast content can be spread in time more conveniently.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below.
Fig. 1 shows a schematic diagram of a system architecture for generating playback during live broadcast according to an example embodiment of the present application.
Fig. 2 shows a flowchart of a method of generating playback during live broadcast according to an example embodiment of the present application.
Fig. 3 illustrates an apparatus for generating playback during a live broadcast according to an example embodiment of the present application.
Fig. 4 shows another apparatus for generating playback during live according to an example embodiment of the present application.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals denote the same or similar parts in the drawings, and thus, a repetitive description thereof will be omitted.
The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the disclosure. One skilled in the relevant art will recognize, however, that the embodiments of the disclosure can be practiced without one or more of the specific details, or with other means, components, materials, devices, or operations. In such cases, well-known structures, methods, devices, implementations, materials, or operations are not shown or described in detail.
The flow charts shown in the drawings are merely illustrative and do not necessarily include all of the contents and operations/steps, nor do they necessarily have to be performed in the order described. For example, some operations/steps may be decomposed, and some operations/steps may be combined or partially combined, so that the actual execution sequence may be changed according to the actual situation.
The terms "first," "second," and the like in the description and claims of the present application and in the above-described drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
Fig. 1 shows a schematic diagram of a system architecture for generating playback during live broadcast according to an example embodiment of the present application. A process of generating a playback during a live broadcast according to an exemplary embodiment of the present application will be described in detail below with reference to fig. 1.
As shown in fig. 1, after the host starts the live broadcast, the live stream is pushed to the live source station, and at the same time, the document to be presented in the live broadcast process is started. The live broadcast source station is a total live broadcast stream pushing source station, and all live broadcasts initiated by the anchor broadcast can acquire original live broadcast stream pushing from the live broadcast source station.
The message server is used for storing message data of all time points of the live broadcast room, and when the host demonstrates the document, the host synchronously sends the demonstration document message to the message server.
In the live broadcasting process, a recording server is called to record live broadcasting, and a fragmented recording file, namely a video slice file, is obtained. In order to ensure the recording efficiency and reduce the consumption of recording resources, the whole live broadcast is recorded into a plurality of ts video format video slice files.
The cloud storage server is used for storing the video slice files, and each time the recording server generates one video slice file, the video slice file is stored in the cloud storage server through the CDN in an asynchronous communication mode.
The database is used for storing index data of video slice files, such as live broadcast room identification, slice serial number, slice name, slice start timestamp, slice video time length, whether a key frame starts, video aspect ratio, file storage size and/or recording duration. In the process of generating slices, the recording server generates detail information data of each video slice file, and stores the detail information data of each video slice file into a database so as to establish an association relationship among a live broadcast room, a stream pushing starting time point and slice details.
If the live broadcast is in the process, the live broadcast party or the audience sends a playback request to a playback server, and the playback request parameters comprise a live broadcast room identifier, a start time and an end time. And after receiving the playback request, the playback server requests the recording server for the video slice file information of the corresponding live broadcast room. And the playback server determines the screening time according to the slice start time stamp in the video slice file information. And according to the screening time, filtering the retrieved video slice file information to obtain a video slice file corresponding to the screening time. Finally, m3u8 playback video files are generated using the filtered video slice files. And simultaneously, the recording server requests the message server to acquire the document demonstration message and the chat message in the period of time according to the identification, the starting time and the ending time of the live broadcast room, and generates a message text file by combining the document demonstration message and the chat message. Since each message body contains an absolute timestamp, synchronization to the video slice file can be achieved by calculating the relative time offset from the live start time.
The generated m3u8 playback video file and the message text file are combined to obtain the playback video corresponding to the requested playback parameters.
Fig. 2 shows a flowchart of a method of generating playback during live broadcast according to an example embodiment of the present application. A method of generating a playback during a live broadcast according to an exemplary embodiment of the present application will be described in detail below with reference to fig. 2.
As shown in fig. 2, in step S201, a live playback request parameter is acquired.
According to some example embodiments of the present application, the live playback request parameter includes a live room identification, a requested playback start time and/or a requested playback end time.
In step S203, a video slice file corresponding to the live playback request parameter is retrieved using the live playback request parameter acquired in step S203.
According to some example embodiments of the present application, some example embodiments of the present application are obtained by:
firstly, video slice file information corresponding to the live broadcast room identification is obtained by utilizing the live broadcast room identification. The video slice file information comprises a slice name, a slice start timestamp, a slice video time length, whether a key frame starts or not, a video aspect ratio, a file storage size and/or a recording duration.
Then, a filtering time is determined according to the video slice file information.
According to some embodiments, if the request start time is not included in the request parameters or is earlier than the live broadcast start time, the live broadcast start time is used as the screening start time.
According to some embodiments, if the request end time is not included in the request parameters or the request end time is later than the current live broadcast time, the current live broadcast time is used as the screening end time.
According to some embodiments, if the start time in the request parameter is later than the live broadcast start time and the end time in the request parameter is earlier than the current live broadcast time, the start time and the end time in the request parameter are respectively used as the start time and the end time of the filtering.
And finally, filtering the retrieved video slice file information according to the screening time to obtain the video slice file corresponding to the screening time.
According to some embodiments, before step S203, a video slice file corresponding to the live playback request also needs to be generated.
In step S205, a playback video file is generated using the retrieved video slice file.
According to some example embodiments of the present application, the playback video file is generated by:
first, a slice start time stamp of a video slice file is converted into a relative time corresponding to a start time point of live broadcasting.
Then, a playback video file is generated using the converted video slice file.
According to some example embodiments of the present application, after acquiring the live playback request parameter, a document presentation message and/or a chat message corresponding to the live playback request parameter is retrieved by using the live playback request parameter.
After step S205, a playback video is generated using the playback video file, the document presentation message, and/or the chat message.
According to some embodiments, a message text file is first generated using the document presentation message and/or the chat message, and then a playback video is generated using the playback video file and the message text file generated in step S205.
According to some embodiments, each message body contains an absolute timestamp, and synchronization to the video slice file is achieved by calculating a relative time offset from the live start time.
According to the example embodiment shown in fig. 2, by retrieving the video slice file corresponding to the live broadcast request and generating the playback video in the live broadcast process, the playback video can be generated in the live broadcast process without waiting for the live broadcast playback to be checked after the live broadcast is finished, so that not only is the time of a user saved, but also the live broadcast content can be more conveniently spread in time.
Fig. 3 illustrates an apparatus for generating playback during a live broadcast according to an example embodiment of the present application. As shown in fig. 3, an apparatus that generates playback during live broadcast includes a live playback request parameter acquisition unit 301, a video slice file retrieval unit 303, and a playback video file generation unit 305.
The live playback request parameter obtaining unit 301 is configured to obtain a live playback request parameter, the video slice file retrieving unit 303 is configured to retrieve a video slice file corresponding to the live playback request according to the live playback request parameter, and the playback video file generating unit 305 is configured to generate a playback video file by using the retrieved video slice file.
Fig. 4 shows another apparatus for generating playback during live broadcast according to an example embodiment of the present application
The power protection device 200 according to this embodiment of the present application is described below with reference to fig. 4. The apparatus 200 for generating playback during live broadcast shown in fig. 4 is only an example, and should not bring any limitation to the functions and the scope of use of the embodiments of the present application.
As shown in fig. 4, an apparatus 200 for generating playback during live broadcast is in the form of a general purpose computing device. The components of the apparatus 200 that generate playback during live may include, but are not limited to: at least one processing unit 210, at least one memory unit 220, a bus 230 connecting different system components (including the memory unit 220 and the processing unit 210), a display unit 240, and the like.
Wherein the storage unit stores program code that can be executed by the processing unit 210 such that the processing unit 210 performs the methods according to various exemplary embodiments of the present application described herein. For example, the processing unit 210 may perform a method as shown in fig. 1.
The storage unit 220 may include readable media in the form of volatile storage units, such as a random access memory unit (RAM) 2201 and/or a cache memory unit 2202, and may further include a read only memory unit (ROM) 2203.
The storage unit 220 may also include a program/utility 2204 having a set (at least one) of program modules 2205, such program modules 2205 including, but not limited to: an operating system, one or more application programs, other program modules, and program data, each of which, or some combination thereof, may comprise an implementation of a network environment.
Bus 230 may be one or more of several types of bus structures, including a memory unit bus or memory unit controller, a peripheral bus, an accelerated graphics port, a processing unit, or a local bus using any of a variety of bus architectures.
The apparatus 200 for generating playback during a live broadcast may also be in communication with one or more external devices 300 (e.g., a keyboard, a pointing device, a bluetooth device, etc.), one or more devices that enable a user to interact with the apparatus 200 for generating playback during a live broadcast, and/or any device (e.g., a router, a modem, etc.) that enables the apparatus 200 for generating playback during a live broadcast to communicate with one or more other computing devices. Such communication may occur via an input/output (I/O) interface 250. Also, the apparatus 200 that generates playback during live broadcast may also communicate with one or more networks (e.g., a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network, such as the internet) through the network adapter 260. The network adapter 260 may communicate over the bus 230 with other modules of the apparatus 200 that generate playback during live. It should be appreciated that although not shown in the figures, other hardware and/or software modules may be used in conjunction with the apparatus 200 for generating playback during a live broadcast, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems, among others.
Through the above description of the embodiments, those skilled in the art will readily understand that the exemplary embodiments described herein may be implemented by software, or by software in combination with necessary hardware. The technical solution according to the embodiments of the present application may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (which may be a CD-ROM, a usb disk, a removable hard disk, etc.) or on a network, and includes several instructions to enable a computing device (which may be a personal computer, a server, or a network device, etc.) to execute the above method according to the embodiments of the present application.
The software product may employ any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium include: an electrical connection having one or more wires, a portable disk, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
A computer readable storage medium may include a propagated data signal with readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A readable storage medium may also be any readable medium that is not a readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code embodied on a readable storage medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Program code for carrying out operations of the present application may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device and partly on a remote computing device, or entirely on the remote computing device or server. In the case of a remote computing device, the remote computing device may be connected to the user computing device through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computing device (e.g., through the internet using an internet service provider).
The computer readable medium carries one or more programs which, when executed by a device, cause the computer readable medium to perform the functions described above.
Those skilled in the art will appreciate that the modules described above may be distributed in the apparatus according to the description of the embodiments, or may be modified accordingly in one or more apparatuses unique from the embodiments. The modules of the above embodiments may be combined into one module, or further split into multiple sub-modules.
According to some embodiments of the application, the video slice file corresponding to the live broadcast request is retrieved and the playback video is generated in the live broadcast process, so that the playback video can be generated in the live broadcast process, the live broadcast playback does not need to be checked after the live broadcast is finished, the time of a user is saved, and the live broadcast content can be spread in time more conveniently.
The foregoing detailed description of the embodiments of the present application has been presented to illustrate the principles and implementations of the present application, and the description of the embodiments is only intended to facilitate the understanding of the methods and their core concepts of the present application. Meanwhile, a person skilled in the art should, according to the idea of the present application, change or modify the embodiments and applications of the present application based on the scope of the present application. In view of the above, the description should not be taken as limiting the application.
Claims (11)
1. A method of generating playback during a live broadcast, the method comprising:
acquiring a live broadcast playback request parameter;
retrieving a video slice file corresponding to the live playback request parameter by using the live playback request parameter;
and generating a playback video file by using the retrieved video slice file.
2. The method of claim 1, wherein:
the live playback request parameter comprises a live room identifier, a request playback start time and/or a request playback end time.
3. The method of claim 2, wherein retrieving the video slice file corresponding to the live playback request parameter according to the live playback request parameter comprises:
acquiring video slice file information corresponding to the live broadcast room identification by using the live broadcast room identification, wherein the video slice file information comprises a slice name, a slice start timestamp, slice video time, whether a key frame starts or not, a video aspect ratio, a file storage size and/or recording duration;
determining screening time according to the video slice file information;
and filtering the retrieved video slice file information according to the screening time to obtain a video slice file corresponding to the screening time.
4. The method of claim 3, wherein generating a playback video file using the retrieved video slice file comprises:
converting the slice start timestamp of the video slice file to a relative time corresponding to a start time point of the live broadcast;
and generating a playback video file by using the converted video slice file.
5. The method of claim 1, wherein prior to retrieving the video slice file corresponding to the live playback request parameter using the live playback request parameter, the method further comprises:
and generating a video slice file corresponding to the live playback request.
6. The method of claim 1, further comprising:
retrieving a document demonstration message corresponding to the live playback request parameter; and/or retrieving chat messages corresponding to the live playback request parameters.
7. The method of claim 6, wherein after generating a playback video file using the retrieved video slice file, the method further comprises:
generating a playback video using the playback video file, the document presentation message, and/or the chat message.
8. The method of claim 7, wherein generating a playback video using the playback video file, the document presentation message, and/or the chat message comprises:
generating a message text file using the document presentation message and/or the chat message;
and generating a playback video by using the playback video file and the message text file.
9. The method of claim 6,
prior to retrieving the document presentation message corresponding to the live playback request parameter, the method further comprises:
generating a document demonstration message corresponding to the live playback request parameter; and/or
Prior to retrieving the chat message corresponding to the live playback request parameter, the method further comprises:
and generating a chat message corresponding to the live broadcast playback request parameter.
10. An apparatus for generating playback during live broadcast, the apparatus comprising:
a live playback request parameter obtaining unit, configured to obtain a live playback request parameter;
the video slice file retrieval unit is used for retrieving a video slice file corresponding to the live playback request according to the live playback request parameter;
a playback video file generating unit for generating a playback video file using the retrieved video slice file.
11. An apparatus for generating playback during live broadcast, the apparatus comprising:
one or more processors;
storage means for storing one or more programs;
when executed by the one or more processors, cause the one or more processors to implement the method of any one of claims 1-9.
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| CN115914670A (en) * | 2023-02-01 | 2023-04-04 | 广州市千钧网络科技有限公司 | Live broadcast playback processing method and device and storage medium |
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| CN106412677A (en) * | 2016-10-28 | 2017-02-15 | 北京奇虎科技有限公司 | Generation method and device of playback video file |
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| CN110113626A (en) * | 2019-05-13 | 2019-08-09 | 北京奇艺世纪科技有限公司 | A kind of method and device playing back live video |
| CN113395534A (en) * | 2021-06-15 | 2021-09-14 | 杭州米络星科技(集团)有限公司 | Live playback video processing method, device, equipment and storage medium |
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| CN114466201A (en) * | 2022-02-21 | 2022-05-10 | 上海哔哩哔哩科技有限公司 | Live stream processing method and device |
| CN114466201B (en) * | 2022-02-21 | 2024-03-19 | 上海哔哩哔哩科技有限公司 | Live stream processing method and device |
| CN115914670A (en) * | 2023-02-01 | 2023-04-04 | 广州市千钧网络科技有限公司 | Live broadcast playback processing method and device and storage medium |
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Application publication date: 20211231 |