CN107743247A - A kind of online demenstration method of PPT and system - Google Patents
A kind of online demenstration method of PPT and system Download PDFInfo
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- CN107743247A CN107743247A CN201710889300.3A CN201710889300A CN107743247A CN 107743247 A CN107743247 A CN 107743247A CN 201710889300 A CN201710889300 A CN 201710889300A CN 107743247 A CN107743247 A CN 107743247A
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- ppt
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- audio
- directive script
- frequency information
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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
- H04N21/4302—Content synchronisation processes, e.g. decoder synchronisation
- H04N21/4307—Synchronising the rendering of multiple content streams or additional data on devices, e.g. synchronisation of audio on a mobile phone with the video output on the TV screen
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
- G06F3/1407—General aspects irrespective of display type, e.g. determination of decimal point position, display with fixed or driving decimal point, suppression of non-significant zeros
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/234—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs
-
- 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
- H04N21/242—Synchronization processes, e.g. processing of PCR [Program Clock References]
-
- 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
- H04N21/439—Processing of audio elementary streams
Abstract
A kind of online demenstration method of PPT provided by the invention and system, its method are as follows：PPT files are uploaded to server, the PPT files are downloaded from server to play end；Recording audio information, and audio-frequency information is sent to playing end；Whether have triggering PPT operation, if so, then generating directive script information corresponding to PPT operations if monitoring in real time；Directive script information is sent to end is played, to play while end plays audio-frequency information according to the directive script information presentation PPT.The present invention only needs to transmit audio-frequency information and directive script information, relative to the mode of conventional receiver video, improve efficiency of transmission, make live more smooth, the present invention carries out demonstration operation by directive script to playing the PPT files that termination receives simultaneously, solve the problems, such as that word be present during conventional video education is live obscures, while improve live teaching broadcast experience.
Description
Technical field
The present invention relates to communication technical field, more particularly to a kind of online demenstration methods of PPT and system.
Background technology
Existing remote teaching, end of giving lessons is demonstrated using PowerPoints such as PPT, while PPT presentation process is carried out
Video record, and by the realtime video transmission of recording to end is played, to realize that remote teaching is live, but there is flow and took in it
Greatly, it is live not smooth, and it is live during word mould can be caused due to reasons such as camera quality, light, distance, video compress
The problems such as paste is not seen, influence live teaching broadcast experience.
The content of the invention
The technical problems to be solved by the invention are：The present invention provides a kind of online demenstration methods of PPT and system, solves
The problem of live not smooth and video pictures are smudgy in live teaching broadcast, improve the live teaching broadcast experience of user.
In order to solve the above-mentioned technical problem, the invention provides a kind of online demenstration methods of PPT, comprise the following steps：
S1：PPT files are uploaded to server, the PPT files are downloaded from server to play end；
S2：Recording audio information, and audio-frequency information is sent to playing end；
S3：Whether have triggering PPT operation, if so, then generating directive script information corresponding to PPT operations if monitoring in real time；
S4：Directive script information is sent to end is played, to play while end plays audio-frequency information according to the pin
This command information demonstrates PPT.
Present invention also offers a kind of online demo systems of PPT, including give lessons end and broadcasting end, the end of giving lessons include depositing
Reservoir, processor and storage on a memory and the computer program that can run on a processor, described in the computing device
Following steps are realized during program：
S1：PPT files are uploaded to server, the PPT files are downloaded from server to play end；
S2：Recording audio information, and audio-frequency information is sent to playing end；
S3：Whether have triggering PPT operation, if so, then generating directive script information corresponding to PPT operations if monitoring in real time；
S4：Directive script information is sent to end is played, to play while end plays audio-frequency information according to the pin
This command information demonstrates PPT.
Beneficial effects of the present invention are：
The present invention by the way that PPT files are uploaded onto the server, play end educate it is live before from server download PPT
File；Educate it is live during, give lessons end generation PPT demonstration operations corresponding to directive script information, and send to play end, with
This gives lessons simultaneously and holds recording audio information to send to broadcasting end so that playing end can control according to the directive script information being connected to
PPT processed carries out corresponding demonstration operation, and the audio-frequency information for end teachers' instruction of giving lessons can also be heard in presentation process；The present invention is only
Need to transmit audio-frequency information and directive script information, relative to the mode of conventional receiver video, improve efficiency of transmission, make live
It is more smooth, while the present invention carries out demonstration operation by directive script to playing the PPT files that termination receives, and solves tradition
The problem of word is fuzzy during video education is live be present, while improve live teaching broadcast experience.
Brief description of the drawings
Fig. 1 is the key step schematic diagram according to a kind of online demenstration methods of PPT of the embodiment of the present invention；
Fig. 2 is the flow chart according to a kind of online demenstration methods of PPT of the embodiment of the present invention；
Fig. 3 is the structural representation according to a kind of online demo systems of PPT of the embodiment of the present invention；
Label declaration：
1st, give lessons end；2nd, end is played；3rd, memory；4th, processor.
Embodiment
To describe the technology contents of the present invention, the objects and the effects in detail, below in conjunction with embodiment and coordinate attached
Figure is explained in detail.
The design of most critical of the present invention is：End is played before live and downloads PPT files, end generation of being given lessons during live
Directive script information corresponding to PPT operations, and directive script information and the audio-frequency information given lessons are sent to end is played, so as to broadcast
Put end and carry out PPT demonstration operations.
Fig. 1 to Fig. 2 is refer to, a kind of online demenstration methods of PPT provided by the invention, is comprised the following steps：
S1：PPT files are uploaded to server, the PPT files are downloaded from server to play end；
S2：Recording audio information, and audio-frequency information is sent to playing end；
S3：Whether have triggering PPT operation, if so, then generating directive script information corresponding to PPT operations if monitoring in real time；
S4：Directive script information is sent to end is played, to play while end plays audio-frequency information according to the pin
This command information demonstrates PPT.
It was found from foregoing description, the present invention by the way that PPT files are uploaded onto the server, play end educate it is live before
PPT files are downloaded from server；Educate it is live during, give lessons end generation PPT demonstration operations corresponding to directive script information, and
Send to end is played, at the same time, end recording audio information of giving lessons is sent to playing end so that playing end can be according to being connected to
Directive script information, control PPT carry out corresponding demonstration operation, and the sound for end teachers' instruction of giving lessons can also be heard in presentation process
Frequency information；The present invention only needs to transmit audio-frequency information and directive script information, relative to the mode of conventional receiver video, improves
Efficiency of transmission, makes live more smooth, while the present invention is demonstrated playing the PPT files that receive of termination by directive script
Operation, solve the problems, such as that word be present during conventional video education is live obscures, while improve live teaching broadcast experience.
Further, the S2 is specially：
Recording audio data, obtain audio-frequency information, and the audio-frequency information includes very first time stamp data；
By the server to play end real-time Transmission audio-frequency information.
It was found from foregoing description, by the above method, broadcasting end real-time reception can be made to reach online straight to audio-frequency information
Broadcast the purpose of education.
Further, the S3 is specially：
Whether have triggering PPT operation, if so, then being obtained from default com interface if being monitored in real time by default com interface
With the corresponding call back function of PPT operations；
Corresponding directive script information is generated according to the call back function, the directive script information include directive script and
Trigger the second time stamp data during PPT operations.
It was found from foregoing description, by the above method, it can effectively monitor whether end of giving lessons has triggering PPT operations in real time,
And in time by the directive script information transfer of generation to playing end.
Further, the S4 is specially：
The directive script information is sent to playing end；While so as to play end and play audio-frequency information, according to described the
One time stamp data, the second time stamp data and directive script, are demonstrated PPT.
It was found from foregoing description, data are stabbed by the very first time and the second time stamp data is able to ensure that and plays audio on end
Play and PPT operations are synchronous.
Further, also include between the S3 and S4：
Preset data table, the directive script information of generation is sequentially stored in the tables of data.
It was found from foregoing description, by the way that directive script information cache in tables of data, is advantageous to play end or other ends
End carries out demonstration operation to PPT again.
Further, also include after the S4：
When the number of the directive script information in the tables of data reaches predetermined threshold value, will be stored in the tables of data
Directive script information be sent to play end；Audio-frequency information is played to play end pause, according to the multiple scripts received
Command information, demonstration operation continuously is carried out to PPT.
It it was found from foregoing description, can be avoided because transmitting procedure directive script information is lost, and played by the above method
Omit corresponding PPT operations projection in end；Simultaneously after end of giving lessons operates corresponding PPT operation, broadcasting end is allowed according to disposably connecing
The multiple directive script information received, continuous projection operation is carried out to PPT, user can be allowed to review the content of broadcasting,
Be advantageous to the raising of live broadcast teaching quality.
Fig. 3 is refer to, the invention provides a kind of online demo systems of PPT, including give lessons end and broadcasting end, it is described to give lessons
The computer program that end includes memory, processor and storage on a memory and can run on a processor, the processor
Following steps are realized when performing described program：
S1：PPT files are uploaded to server, the PPT files are downloaded from server to play end；
S2：Recording audio information, and audio-frequency information is sent to playing end；
S3：Whether have triggering PPT operation, if so, then generating directive script information corresponding to PPT operations if monitoring in real time；
S4：Directive script information is sent to end is played, to play while end plays audio-frequency information according to the pin
This command information demonstrates PPT.
Further, a kind of described online demo systems of PPT, the S2 are specially：
Recording audio data, obtain audio-frequency information, and the audio-frequency information includes very first time stamp data；
By the server to play end real-time Transmission audio-frequency information.
Further, a kind of described online demo systems of PPT, the S3 are specially：
Whether have triggering PPT operation, if so, then being obtained from default com interface if being monitored in real time by default com interface
With the corresponding call back function of PPT operations；
Corresponding directive script information is generated according to the call back function, the directive script information include directive script and
Trigger the second time stamp data during PPT operations.
Further, a kind of described online demo systems of PPT, the S4 are specially：
The directive script information is sent to playing end；While so as to play end and play audio-frequency information, according to described the
One time stamp data, the second time stamp data and directive script, are demonstrated PPT.
Further, the described online demo systems of a kind of PPT, also include between the S3 and S4：
Preset data table, the directive script information of generation is sequentially stored in the tables of data.
Further, the described online demo systems of a kind of PPT, the S4 also include afterwards：
When the number of the directive script information in the tables of data reaches predetermined threshold value, will be stored in the tables of data
Directive script information be sent to play end；Audio-frequency information is played to play end pause, according to the multiple scripts received
Command information, demonstration operation continuously is carried out to PPT.
Fig. 2 is refer to, embodiments of the invention one are：
The online demenstration methods of a kind of PPT provided by the invention, comprise the following steps：
S1：PPT files are uploaded to server, the PPT files are downloaded from server to play end；
S2：Recording audio information, and audio-frequency information is sent to playing end；
The S2 is specially：
Recording audio data, obtain audio-frequency information, and the audio-frequency information includes very first time stamp data；
By the server to play end real-time Transmission audio-frequency information.
S3：Whether have triggering PPT operation, if so, then generating directive script information corresponding to PPT operations if monitoring in real time；
The S3 is specially：
Whether have triggering PPT operation, if so, then being obtained from default com interface if being monitored in real time by default com interface
With the corresponding call back function of PPT operations；
Corresponding directive script information is generated according to the call back function, the directive script information include directive script and
Trigger the second time stamp data during PPT operations；
What above-mentioned PPT operations referred to is：Page up, lower one page are carried out to PPT, jumps to specific page, a upper animation, next
Individual animation, terminate the operation such as projection, paintbrush, erasing rubber.
S4：Preset data table, the directive script information of generation is sequentially stored in the tables of data.
S5：Directive script information is sent to end is played, to play while end plays audio-frequency information according to the pin
This command information demonstrates PPT；
The S5 is specially：
The directive script information is sent to playing end；While so as to play end and play audio-frequency information, according to described the
One time stamp data, the second time stamp data and directive script, are demonstrated PPT.
S6：When the number of the directive script information in the tables of data reaches predetermined threshold value, by the tables of data
The directive script information of storage, which is sent to, plays end；Audio-frequency information is played to play end pause, it is multiple according to what is received
Directive script information, demonstration operation continuously is carried out to PPT.
Fig. 3 is refer to, embodiments of the invention two are：
The online demo systems of a kind of PPT provided by the invention, including give lessons end 1 and broadcasting end 2, the end 1 of giving lessons include
Memory 3, processor 4 and the computer program that can be run on memory 3 and on processor 4 is stored in, the processor 4 is held
Following steps are realized during row described program：
S1：PPT files are uploaded to server, the PPT files are downloaded from server to play end；
S2：Recording audio information, and audio-frequency information is sent to playing end；
The S2 is specially：
Recording audio data, obtain audio-frequency information, and the audio-frequency information includes very first time stamp data；
By the server to play end real-time Transmission audio-frequency information.
S3：Whether have triggering PPT operation, if so, then generating directive script information corresponding to PPT operations if monitoring in real time；
The S3 is specially：
Whether have triggering PPT operation, if so, then being obtained from default com interface if being monitored in real time by default com interface
With the corresponding call back function of PPT operations；
Corresponding directive script information is generated according to the call back function, the directive script information include directive script and
Trigger the second time stamp data during PPT operations.
S4：Preset data table, the directive script information of generation is sequentially stored in the tables of data.
S5：Directive script information is sent to end is played, to play while end plays audio-frequency information according to the pin
This command information demonstrates PPT；
The S5 is specially：
The directive script information is sent to playing end；While so as to play end and play audio-frequency information, according to described the
One time stamp data, the second time stamp data and directive script, are demonstrated PPT.
S6：When the number of the directive script information in the tables of data reaches predetermined threshold value, by the tables of data
The directive script information of storage, which is sent to, plays end；Audio-frequency information is played to play end pause, it is multiple according to what is received
Directive script information, demonstration operation continuously is carried out to PPT.
Embodiments of the invention three are：
End of giving lessons calls service end interface to create direct broadcasting room, and upload PPT documents to after server, open PPT documents；
End is played to enter direct broadcasting room and download PPT documents by server, open PPT documents；
Give lessons to hold and Microsoft PPT correlation com interfaces are authorized so that com interface can be monitored on end of giving lessons in real time is
No to have triggering PPT operations, when there is operation at end of giving lessons, (such as page turning) com interface can send call back function to end of giving lessons；
During live teaching broadcast, end of giving lessons passes through local microphone recording audio information, and broadcasts to direct broadcasting room
Interior broadcasting end (audio-frequency information can be also forwarded to by service end and play end), and audio-frequency information is stored in and gives lessons end locally
In memory；
While recording audio information, whether control com interface is monitored in real time triggering PPT operations, if so, then controlling
Com interface sends corresponding call back function to end of giving lessons, directive script information corresponding to end generation PPT operations of giving lessons；And will be raw
Into directive script information be sequentially stored in default tables of data；
Give lessons and hold a generation directive script information, immediately send directive script information to broadcasting end, while end record of giving lessons
The audio-frequency information real-time Transmission of system plays termination and receives audio-frequency information to end is played, and postpones default very first time broadcasting audio letter
Breath；Since the very first time receive directive script listening to triggering PPT operations not less than com interface until arriving and playing end
The time of information；While the broadcasting end plays audio-frequency information, according to the time stamp data of audio-frequency information, directive script information
Time stamp data and directive script, PPT is operated accordingly；
When the directive script information stored in tables of data reaches 10, this 10 instructions are issued this by property again at end of giving lessons
End is played, 10 instructions that end of giving lessons disposably is sent out can allow it to play end and play the part missed；Play end pause and play sound
Frequency information, and according to 10 instructions received, corresponding operating is carried out to PPT successively, centre is not stopped, and waits 10 command operatings
During completion, it can continue to operate subsequent instructions, by normal time interval dwell (directive script packet contains time stamp data), and broadcast
Put follow audio；
When not being inconsistent audio time and directive script time, it can be suspended or come in finely tune soon, audio is realized with this
With the synchronization of directive script operation；
By aforesaid operations broadcasting or End-of-Course are exited until playing end.
If the optional directive script information and audio-frequency information for storing a complete class, can be achieved the recorded broadcast of course
(watching after class).
In summary, the present invention is by the way that PPT files are uploaded onto the server, play end educate it is live before from service
Device downloads PPT files；Educate it is live during, give lessons end generation PPT demonstration operations corresponding to directive script information, and send extremely
End is played, at the same time, end recording audio information of giving lessons is sent to broadcasting end so that playing end can refer to according to the script being connected to
Information is made, control PPT carries out corresponding demonstration operation, and the audio letter for end teachers' instruction of giving lessons can also be heard in presentation process
Breath；The present invention only needs to transmit audio-frequency information and directive script information, relative to the mode of conventional receiver video, improves transmission
Efficiency, makes live more smooth, while the present invention carries out demonstration behaviour by directive script to playing the PPT files that receive of termination
Make, solve the problems, such as that word be present during conventional video education is live obscures, while improve live teaching broadcast experience.
Embodiments of the invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize this hair
The equivalents that bright specification and accompanying drawing content are made, or other related technical areas are directly or indirectly used in, similarly
It is included within the scope of the present invention.
Claims (10)
1. a kind of online demenstration methods of PPT, it is characterised in that comprise the following steps：
S1：PPT files are uploaded to server, the PPT files are downloaded from server to play end；
S2：Recording audio information, and audio-frequency information is sent to playing end；
S3：Whether have triggering PPT operation, if so, then generating directive script information corresponding to PPT operations if monitoring in real time；
S4：Directive script information is sent to end is played, is referred to play while end plays audio-frequency information according to the script
Make information presentation PPT.
2. the online demenstration methods of a kind of PPT according to claim 1, it is characterised in that the S2 is specially：
Recording audio data, obtain audio-frequency information, and the audio-frequency information includes very first time stamp data；
By the server to play end real-time Transmission audio-frequency information.
3. the online demenstration methods of a kind of PPT according to claim 2, it is characterised in that the S3 is specially：
By default com interface in real time monitor whether have triggering PPT operation, if so, then from default com interface obtain with
Call back function corresponding to PPT operations；
Corresponding directive script information is generated according to the call back function, the directive script information includes directive script and triggering
The second time stamp data when PPT is operated.
4. the online demenstration methods of a kind of PPT according to claim 3, it is characterised in that the S4 is specially：
The directive script information is sent to playing end；While so as to play end and play audio-frequency information, during according to described first
Between stab data, the second time stamp data and directive script, PPT is demonstrated.
5. the online demenstration methods of a kind of PPT according to claim 1, it is characterised in that also include between the S3 and S4：
Preset data table, the directive script information of generation is sequentially stored in the tables of data.
6. the online demenstration methods of a kind of PPT according to claim 5, it is characterised in that also include after the S4：
When the number of the directive script information in the tables of data reaches predetermined threshold value, the pin that will have been stored in the tables of data
This command information, which is sent to, plays end；Audio-frequency information is played to play end pause, according to the multiple directive scripts received
Information, demonstration operation continuously is carried out to PPT.
7. a kind of online demo systems of PPT, including give lessons end and broadcasting end, the end of giving lessons include memory, processor and deposited
Store up the computer program that can be run on a memory and on a processor, it is characterised in that the computing device described program
Shi Shixian following steps：
S1：PPT files are uploaded to server, the PPT files are downloaded from server to play end；
S2：Recording audio information, and audio-frequency information is sent to playing end；
S3：Whether have triggering PPT operation, if so, then generating directive script information corresponding to PPT operations if monitoring in real time；
S4：Directive script information is sent to end is played, is referred to play while end plays audio-frequency information according to the script
Make information presentation PPT.
8. the online demo systems of a kind of PPT according to claim 7, it is characterised in that the S2 is specially：
Recording audio data, obtain audio-frequency information, and the audio-frequency information includes very first time stamp data；
By the server to play end real-time Transmission audio-frequency information.
9. the online demo systems of a kind of PPT according to claim 8, it is characterised in that the S3 is specially：
By default com interface in real time monitor whether have triggering PPT operation, if so, then from default com interface obtain with
Call back function corresponding to PPT operations；
Corresponding directive script information is generated according to the call back function, the directive script information includes directive script and triggering
The second time stamp data when PPT is operated.
10. the online demo systems of a kind of PPT according to claim 9, it is characterised in that the S4 is specially：
The directive script information is sent to playing end；While so as to play end and play audio-frequency information, during according to described first
Between stab data, the second time stamp data and directive script, PPT is demonstrated.
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| CN108712618A (en) * | 2018-05-16 | 2018-10-26 | 北京百度网讯科技有限公司 | Instructor in broadcasting's control method, equipment and storage medium |
| CN109640108A (en) * | 2018-12-13 | 2019-04-16 | 广州易方信息科技股份有限公司 | Interaction data and audio, video data synchronous method and system is broadcast live based on document class |
| CN110035311A (en) * | 2019-04-04 | 2019-07-19 | 网宿科技股份有限公司 | A kind of methods, devices and systems that message flow and audio/video flow is played simultaneously |
| CN111464873A (en) * | 2020-04-10 | 2020-07-28 | 创盛视联数码科技（北京）有限公司 | Method for realizing real-time painting brush and real-time characters at video live broadcast watching end |
| CN112188272A (en) * | 2020-09-07 | 2021-01-05 | 杭州壹百分教育科技有限公司 | Live broadcast recording method and device |
| CN112533054A (en) * | 2019-09-19 | 2021-03-19 | 腾讯科技（深圳）有限公司 | Online video playing method and device and storage medium |
| US11102540B2 (en) | 2019-04-04 | 2021-08-24 | Wangsu Science & Technology Co., Ltd. | Method, device and system for synchronously playing message stream and audio-video stream |
| CN114613215A (en) * | 2022-03-09 | 2022-06-10 | 云学堂信息科技(江苏)有限公司 | Online interactive system for lecturer video teaching |
| CN115589408A (en) * | 2022-11-24 | 2023-01-10 | 南京伯索网络科技有限公司 | System and synchronization method for multi-terminal online PPT playing, electronic device and storage medium |
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| CN108712618A (en) * | 2018-05-16 | 2018-10-26 | 北京百度网讯科技有限公司 | Instructor in broadcasting's control method, equipment and storage medium |
| CN109640108A (en) * | 2018-12-13 | 2019-04-16 | 广州易方信息科技股份有限公司 | Interaction data and audio, video data synchronous method and system is broadcast live based on document class |
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| CN110035311A (en) * | 2019-04-04 | 2019-07-19 | 网宿科技股份有限公司 | A kind of methods, devices and systems that message flow and audio/video flow is played simultaneously |
| US11102540B2 (en) | 2019-04-04 | 2021-08-24 | Wangsu Science & Technology Co., Ltd. | Method, device and system for synchronously playing message stream and audio-video stream |
| CN112533054A (en) * | 2019-09-19 | 2021-03-19 | 腾讯科技（深圳）有限公司 | Online video playing method and device and storage medium |
| CN112533054B (en) * | 2019-09-19 | 2023-02-28 | 腾讯科技（深圳）有限公司 | Online video playing method and device and storage medium |
| CN111464873A (en) * | 2020-04-10 | 2020-07-28 | 创盛视联数码科技（北京）有限公司 | Method for realizing real-time painting brush and real-time characters at video live broadcast watching end |
| CN112188272A (en) * | 2020-09-07 | 2021-01-05 | 杭州壹百分教育科技有限公司 | Live broadcast recording method and device |
| CN114613215A (en) * | 2022-03-09 | 2022-06-10 | 云学堂信息科技(江苏)有限公司 | Online interactive system for lecturer video teaching |
| CN115589408A (en) * | 2022-11-24 | 2023-01-10 | 南京伯索网络科技有限公司 | System and synchronization method for multi-terminal online PPT playing, electronic device and storage medium |
| CN115589408B (en) * | 2022-11-24 | 2023-03-17 | 南京伯索网络科技有限公司 | System and synchronization method for multi-terminal online PPT playing, electronic device and storage medium |
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