CN109889859A - A kind of synchronous method of live video and document page turning - Google Patents
A kind of synchronous method of live video and document page turning Download PDFInfo
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Abstract
This application discloses the synchronous method of a kind of live video and document page turning, live data and document page turning data can be obtained, it analyzes document files and the corresponding relationship of time or video file is broadcast live, and there are the synchronous documents of this corresponding relationship and video data to be integrated into file destination record, finally file destination is pushed to and plays end, page turning is carried out to document to guarantee video and document-synchronization according to corresponding relationship in order to play end when parsing file destination.It can be seen that, this method has determined page turning event by analysis video data and document page turning data and the corresponding relationship of time or video file is broadcast live, and it sends corresponding relationship to together together with video data and plays end, therefore playing end can precisely determine when to carry out page turning according to corresponding relationship, finally realize the purpose of video and document-synchronization.In addition, effect corresponds to the above method present invention also provides synchronizing device, streaming media server and the live broadcast system of a kind of live video and document page turning.
Description
Technical field
This application involves computer field, in particular to synchronous method, device, the stream of a kind of live video and document page turning
Media server and live broadcast system.
Background technique
Currently, live streaming is more more and more universal, a kind of scene is often encountered in live streaming, i.e., needs pair during live streaming
Document carries out page turning, such as in Multimedia Teaching, not only needs to play out the instructional video of teacher, it is also necessary to open up
Show courseware.Since courseware needs to carry out in teaching process page turning, how to guarantee that instructional video is played simultaneously with courseware, is one
Problem to be resolved.
Since video data needs to there are in fact certain time-delay from server transport to end, live streaming process is played,
And the page turning process of document is almost real-time response.Traditional synchronous method is to guarantee video and document-synchronization, is provided with solid
Fixed delay does not send page-turning instruction to broadcasting end immediately, but is passing through above-mentioned fixation after receiving the page turning event of document
It is delayed and then sends page-turning instruction to end is played.But due to the influence of the factors such as equipment performance, transmission range, bandwidth,
The transmission delay of video data be it is unfixed, this results in be played simultaneously with document playing end video.
It is urgently those skilled in the art as it can be seen that how to realize video progress synchronous with document page turning during live streaming
Member solves the problems, such as.
Summary of the invention
The purpose of the application is to provide synchronous method, device, the streaming media server of a kind of live video and document page turning
And live broadcast system, it cannot be synchronous with document page turning to video during solving the problems, such as traditional live streaming.
In order to solve the above technical problems, this application provides the synchronous method of a kind of live video and document page turning, comprising:
Obtain live data and document page turning data, wherein the live data include the live streaming time and with it is described straight
Corresponding video file between sowing time, the document page turning data include page turning time and document corresponding with the page turning time
File；
Generate the synchronous documents of the document files Yu the live data, wherein the synchronous documents are for recording institute
State video described in the corresponding relationship and/or the live data of live streaming time and the document files described in live data
The corresponding relationship of file and the document files；
The live data and the synchronous documents are integrated, file destination is obtained；
By the file destination be pushed to play end, in order to the broadcasting end when parsing the file destination according to institute
It states corresponding relationship and page turning is carried out to guarantee video and document-synchronization to document.
Optionally, the synchronous documents for generating the document files and the live data, specifically include:
Picture is converted by the document files, and generates the web page address of the picture；
Generate the synchronous documents of the document files Yu the live data, wherein the synchronous documents are for recording institute
State video described in the corresponding relationship and/or the live data of live streaming time and the web page address described in live data
The corresponding relationship of file and the web page address.
Optionally, described that the live data and the synchronous documents are integrated, file destination is obtained, it is specific to wrap
It includes:
Transcoding is carried out to the live data；
Live data after the synchronous documents and transcoding is integrated, file destination is obtained.
Optionally, before the acquisition live data and document page turning data, further includes:
The collection terminal of collection terminal and the document page turning data to the live data carries out time calibration.
Optionally, the synchronous documents are network video text track file.
Optionally, the file destination is pushed to described after playing end, further includes:
It plays end and parses the file destination, judge whether to need page turning according to the corresponding relationship；
If desired, then it obtains the document files and executes page turn over operation.
Present invention also provides the synchronizing devices of a kind of live video and document page turning, comprising:
Data acquisition module: for obtaining live data and document page turning data, wherein the live data includes live streaming
Time and video file corresponding with the live streaming time, the document page turning data include the page turning time and turn over described
Page time corresponding document files；
Synchronous documents generation module: for generating the synchronous documents of the document files Yu the live data, wherein institute
Synchronous documents are stated for recording the corresponding relationship and/or institute of live streaming time and the document files described in the live data
State the corresponding relationship of video file described in live data Yu the document files；
It integrates module: for integrating to the live data and the synchronous documents, obtaining file destination；
Pushing module: playing end for the file destination to be pushed to, in order to which the broadcasting end is parsing the mesh
Page turning is carried out to document to guarantee video and document-synchronization according to the corresponding relationship when marking file.
Optionally, the synchronous documents generation module specifically includes:
Conversion unit: for converting picture for the document files, and the web page address of the picture is generated；
Generation unit: for generating the synchronous documents of the document files Yu the live data, wherein described to synchronize text
Part is used to record the corresponding relationship and/or the live streaming number that time and the web page address are broadcast live described in the live data
The corresponding relationship of the video file described in and the web page address.
In addition, present invention also provides a kind of streaming media servers, comprising:
Memory: for storing computer program；
Processor: for executing the computer program, with realize a kind of live video described in any one as above with
The step of synchronous method of document page turning.
Finally, present invention also provides a kind of live broadcast systems, comprising: live video collection terminal, is broadcast document page turning collection terminal
End is put, further includes a kind of streaming media server as described above.
The synchronous method of a kind of live video provided herein and document page turning, can obtain including the live streaming time and
The live data of video file, the document page turning data including page turning time and document files, and text is determined by both analyses
Record, is there is the synchronous documents and video data of this corresponding relationship by the corresponding relationship of files and live streaming time or video file
It is integrated into file destination, finally file destination is pushed to and plays end, in order to play end when parsing file destination according to right
It should be related to and page turning is carried out to guarantee video and document-synchronization to document.As it can be seen that this method is turned over by analysis video data and document
Page data has determined live streaming time or the corresponding relationship of video file of page turning event and video data, and by this corresponding relationship
Connection video data is sent to together plays end, therefore broadcasting end can precisely determine when to carry out page turning according to corresponding relationship,
Finally realize the video purpose synchronous with document.
In addition, present invention also provides the synchronizing device of a kind of live video and document page turning, streaming media server and
Live broadcast system, effect correspond to the above method, and which is not described herein again.
Detailed description of the invention
It, below will be to embodiment or existing for the clearer technical solution for illustrating the embodiment of the present application or the prior art
Attached drawing needed in technical description is briefly described, it should be apparent that, the accompanying drawings in the following description is only this Shen
Some embodiments please for those of ordinary skill in the art without creative efforts, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is a kind of implementation process of the synchronous method embodiment one of live video and document page turning provided herein
Figure；
Fig. 2 is a kind of implementation process of the synchronous method embodiment two of live video and document page turning provided herein
Figure；
Fig. 3 is that front end plays in the synchronous method embodiment two of a kind of live video and document page turning provided herein
The playing process of equipment；
Fig. 4 is a kind of functional block diagram of the synchronizing device of live video and document page turning provided herein；
Fig. 5 is a kind of structural schematic diagram of streaming media server provided herein；
Fig. 6 is a kind of structural schematic diagram of live broadcast system provided herein.
Specific embodiment
The core of the application is to provide synchronous method, device, the streaming media server of a kind of live video and document page turning
And live broadcast system, realize the purpose for guaranteeing video and document-synchronization during live streaming.
In order to make those skilled in the art more fully understand application scheme, with reference to the accompanying drawings and detailed description
The application is described in further detail.Obviously, described embodiments are only a part of embodiments of the present application, rather than
Whole embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, shall fall in the protection scope of this application.
A kind of live video provided by the present application and the synchronous method embodiment one of document page turning are introduced below, joined
See Fig. 1, embodiment one includes:
Step S101: live data and document page turning data are obtained.
Above-mentioned live data is specifically as follows what video capture device plug-flow obtained, and plug-flow refers to an acquisition phase package
The vision signal at scene is passed to the process of network to the process of server by good content transmission in other words.In general,
To realize that plug-flow must also be packaged audio, video data using transport protocol, becomes flow data, commonly spread defeated association
View has RTSP, RTMP, HLS etc., and the present embodiment chooses HLS as flow host-host protocol.
In the present embodiment, above-mentioned live data includes that time and video file corresponding with the live streaming time is broadcast live, also
It is to say, not only comprising the video file for describing video contents in live data, when further including the generation of the video content
Between, i.e., the above-mentioned live streaming time, for realizing that the real-time synchronization of video and document is calibrated in the follow-up process.As a kind of optional
Embodiment, above-mentioned live streaming time can specifically exist in the form of timestamp.Significantly, since video acquisition process
Bring delay is minimum, therefore the present embodiment ignores the delay during video acquisition, that is to say, that the present embodiment was being implemented
Using the acquisition time of above-mentioned video content as the time of origin of video content in journey, specifically can with video capture device when
Subject to clock.
Correspondingly, above-mentioned document page turning data include page turning time and document files corresponding with the page turning time, also
It is to say, it further includes for retouching that document page turning data, which not only include the document files for describing document content, in the present embodiment
The page turning time for stating page turning process, for realizing that the real-time synchronization of video and document is calibrated in the follow-up process.It can as one kind
The embodiment of choosing, above-mentioned document are specifically as follows PPT.It is noted that the present embodiment has ignored page turning event acquisition mistake
Collection terminal is sensed that time of the generation of page turning event, specifically can be with negative as the above-mentioned page turning time by the delay of journey bring
Subject to the clock of the equipment of duty acquisition document page turning event.
Step S102: the synchronous documents of the document files Yu the live data are generated.
Wherein, above-mentioned synchronous documents record has the corresponding relationship that the time is broadcast live in document files and live data, and/or text
The corresponding relationship of video file in files and live data.Specifically, due in step s101, live streaming time and video text
Part corresponds, and page turning time and document files correspond, and the base of the time shaft in unified live streaming time and page turning time
On plinth, it will be able to obtain the corresponding relationship of live streaming time and page turning time, therefore, in summary three corresponding relationships can be true
Determine document files and the corresponding relationship of time be broadcast live, or determines the corresponding relationship of document files and video file, that is to say, that
It can determine which in live streaming process carries out page turning at time point, or determine and turned over while playing which video file
Page.In brief, synchronous documents have recorded the trigger event of page turning event, specifically, the trigger event is to reach specific straight
Between sowing time or play specific video file.
It, can be with as an alternative embodiment, not only have recorded the trigger event of page turning event in synchronous documents
Record the unique identification information of document files itself associated with page turning event or document files.Specifically, server will be adopted
The document files collected is converted into picture, generates the web page address of picture or associated media file and saves, above-mentioned synchronous documents
It can recorde image data, corresponding image data can be extracted from synchronous documents when playing end and judging to need to carry out page turning
To be shown.Preferably, above-mentioned synchronous documents can recorde the web page address, and playing end can judge to be turned over
It is downloaded according to the web page address in synchronous documents from server when page and shows the picture.
Step S103: the live data and the synchronous documents are integrated, file destination is obtained.
In the present embodiment, transcoding first can be carried out to live data, many live scenes require server end and do in real time
On the one hand transcoding, the purpose of transcoding are to adapt to different broadcasting end abilities and play end network bandwidth situation, it is therefore desirable to will
Video stream transcoding at various code rate video flowing, the purpose of transcoding further aspect is that realize second-compressed, with save bandwidth and
Ensure downlink fluency.In server-side transcoding, the superiority and inferiority of transcoding algorithm directly affects the height of video quality, different transcodings
Tool and parameter have different effects, and the present embodiment is not specifically limited the tool and parameter of transcoding, and concrete foundation is practical to be needed
Ask selection.
Step S104: the file destination being pushed to and plays end, in order to which the broadcasting end is parsing the target text
Page turning is carried out to document to guarantee video and document-synchronization according to the corresponding relationship when part.
Specifically, file destination can be pushed to network-side by certain Qos algorithm, data are carried out in CDN node
Live streaming process is realized by obtaining file destination in distribution, final broadcasting end.
The present embodiment provides the synchronous method of a kind of live video and document page turning, can obtain including live streaming the time and
The live data of video file, the document page turning data including page turning time and document files, and text is determined by both analyses
Record, is there is the synchronous documents and video data of this corresponding relationship by the corresponding relationship of files and live streaming time or video file
It is integrated into file destination, finally file destination is pushed to and plays end, in order to play end when parsing file destination according to right
It should be related to and page turning is carried out to guarantee video and document-synchronization to document.As it can be seen that this method is turned over by analysis video data and document
Page data has determined live streaming time or the corresponding relationship of video file of page turning event and video data, and by this corresponding relationship
Connection video data is sent to together plays end, therefore broadcasting end can precisely determine when to carry out page turning according to corresponding relationship,
Finally realize the video purpose synchronous with document.
Start that the synchronous method embodiment two of a kind of live video provided by the present application Yu document page turning is discussed in detail below,
Embodiment two one is realized based on the above embodiment, and has carried out expansion to a certain extent on the basis of example 1.
Referring to fig. 2, embodiment two specifically includes:
Step S201: live data is obtained, and transcoding is carried out to live data, obtains live file.
As an alternative embodiment, streaming media server receives live data, i.e. RTMP stream, and changed into
HLS stream.
Step S202: obtaining document page turning data, generates webvtt file according to document page turning data.
Webvtt file is used to record the corresponding relationship that time and web page address are broadcast live in live data, and/or live streaming number
According to the corresponding relationship of middle video file and web page address.Webvtt, that is, network video text track is a kind of for retrtieval
The file format of track, it is combined with HTML5<track>element, and subtitle, mark can be added to media resources such as audio/videos
Topic and other description informations, and simultaneous display.
It should be noted that the present embodiment does not limit the sequencing of step S201 and step S202.Specifically implementing
In the process, time calibration can be carried out by the collection terminal to the collection terminal of live data and document page turning data in advance.
Step S203: live file and webvtt file are combined, file destination is obtained.
Step S204: file destination is pushed to and plays end.
The live streaming process for playing end after receiving file destination is described below, as shown in figure 3, specifically including that
Step S301: decoding and plays the live file in file destination.
Step S302: according to the corresponding relationship in synchronous documents, showing document files and judge whether to need to carry out page turning,
If desired, S303 is entered step, S301 is otherwise entered step.
Step S303: corresponding document files is obtained, and executes page turn over operation.
Rear end direct broadcast service needs to respond the HLS subtitle url request of streaming media server generation, dynamic generation webvtt word
Curtain returns.Front end playback equipment plays the HLs stream generated, and obtains the caption information with currently playing audio video synchronization in real time, so
Page turning movement is carried out according to these caption informations afterwards.It is understood that WebVTT (.vtt) file is a simple plain text, it is inner
Face contains the video information of several types: subtitle, title, explanation, chapters and sections, and in the present embodiment, the webvtt subtitle of generation has
Body can be with are as follows:
WEBVTT
X-TIMESTAMP-MAP=LOCAL:00:00:00.000, MPEGTS:90000
Cue-0
00:00:53.000-->00:00:59.000
Hehe (document page turn information)
As it can be seen that the synchronous method of a kind of live video and document page turning provided in this embodiment, analyzes video and document
Relationship between page turning, and by this relation record in webvtt file, it is finally that webvtt file and video file one is concurrent
It is sent to front end playback equipment, front end playback equipment judges whether to need when playing live video according to webvtt file
Page turning is carried out, and is determining that obtaining corresponding document files when needing page turning executes page turn over operation, finally realizes live video
It is synchronous with document page turning.Substantially increase aesthetic, the comfort of live streaming viewing user.
A kind of live video provided by the embodiments of the present application and the synchronizing device of document page turning are introduced below, hereafter
The synchronizing device of a kind of live video and the document page turning of description and a kind of above-described live video are same with document page turning
One step process can correspond to each other reference.
Referring to fig. 4, which includes:
Data acquisition module 401: for obtaining live data and document page turning data, wherein the live data includes
Be broadcast live time and video file corresponding with the live streaming time, the document page turning data include the page turning time and with institute
State page turning time corresponding document files；
Synchronous documents generation module 402: for generating the synchronous documents of the document files Yu the live data,
In, the synchronous documents be used for record described in the live data be broadcast live time and the document files corresponding relationship, and/
Or the corresponding relationship of video file described in the live data and the document files；
It integrates module 403: for integrating to the live data and the synchronous documents, obtaining file destination；
Pushing module 404: end is played for the file destination to be pushed to, in order to which the broadcasting end is described in the parsing
Page turning is carried out to document to guarantee video and document-synchronization according to the corresponding relationship when file destination.
As an alternative embodiment, the synchronous documents generation module 402 specifically includes:
Conversion unit: for converting picture for the document files, and the web page address of the picture is generated；
Generation unit: for generating the synchronous documents of the document files Yu the live data, wherein described to synchronize text
Part is used to record the corresponding relationship and/or the live streaming number that time and the web page address are broadcast live described in the live data
The corresponding relationship of the video file described in and the web page address.
A kind of live video of the present embodiment and the synchronizing device of document page turning are for realizing a kind of live video above-mentioned
With the synchronous method of document page turning, therefore specific embodiment in the device visible one of above live video and document
The embodiment part of the synchronous method of page turning, for example, data acquisition module 401, synchronous documents generation module 402, integrating module
403, pushing module 404 are respectively used to realize step S101 in a kind of above-mentioned live video and the synchronous method of document page turning,
S102, S103, S104.So specific embodiment is referred to the description of corresponding various pieces embodiment, herein no longer
Expansion is introduced.
In addition, since a kind of live video of the present embodiment and the synchronizing device of document page turning are for realizing one kind above-mentioned
The synchronous method of live video and document page turning, therefore its effect is corresponding with the effect of the above method, which is not described herein again.
In addition, present invention also provides a kind of streaming media servers, as shown in Figure 5, comprising:
Memory 501: for storing computer program；
Processor 502: for executing the computer program, to realize a kind of live video described in any one as above
The step of with the synchronous method of document page turning.
Finally, present invention also provides a kind of live broadcast systems, as shown in Figure 6, comprising: live video collection terminal 601, document
Page turning collection terminal 602 plays end 603, further includes a kind of streaming media server 604 as described above.
A kind of streaming media server of the present embodiment, live broadcast system turn over for realizing a kind of live video above-mentioned and document
The synchronous method of page, therefore the visible live streaming view one of above of specific embodiment of the streaming media server, live broadcast system
The embodiment part of frequency and the synchronous method of document page turning, and the effect of the two is corresponding with above method embodiment, herein not
It repeats again.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with it is other
The difference of embodiment, same or similar part may refer to each other between each embodiment.For being filled disclosed in embodiment
For setting, since it is corresponded to the methods disclosed in the examples, so being described relatively simple, related place is referring to method part
Explanation.
Professional further appreciates that, unit described in conjunction with the examples disclosed in the embodiments of the present disclosure
And algorithm steps, can be realized with electronic hardware, computer software, or a combination of the two, in order to clearly demonstrate hardware and
The interchangeability of software generally describes each exemplary composition and step according to function in the above description.These
Function is implemented in hardware or software actually, the specific application and design constraint depending on technical solution.Profession
Technical staff can use different methods to achieve the described function each specific application, but this realization is not answered
Think beyond scope of the present application.
The step of method described in conjunction with the examples disclosed in this document or algorithm, can directly be held with hardware, processor
The combination of capable software module or the two is implemented.Software module can be placed in random access memory (RAM), memory, read-only deposit
Reservoir (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technology
In any other form of storage medium well known in field.
Above to synchronous method, the device, streaming media service of a kind of live video provided herein and document page turning
Device and live broadcast system are described in detail.Specific case used herein carries out the principle and embodiment of the application
It illustrates, the description of the example is only used to help understand the method for the present application and its core ideas.It should be pointed out that for
For those skilled in the art, under the premise of not departing from the application principle, if can also be carried out to the application
Dry improvement and modification, these improvement and modification are also fallen into the protection scope of the claim of this application.
Claims (10)
1. the synchronous method of a kind of live video and document page turning characterized by comprising
Obtain live data and document page turning data, wherein when the live data is including the live streaming time and with the live streaming
Between corresponding video file, the document page turning data include the page turning time and document corresponding with the page turning time text
Part；
Generate the synchronous documents of the document files Yu the live data, wherein the synchronous documents are described straight for recording
Video file described in the corresponding relationship and/or the live data of live streaming time and the document files described in multicast data
With the corresponding relationship of the document files；
The live data and the synchronous documents are integrated, file destination is obtained；
By the file destination be pushed to play end, in order to the broadcasting end when parsing the file destination according to described right
It should be related to and page turning is carried out to guarantee video and document-synchronization to document.
2. the method as described in claim 1, which is characterized in that the generation document files is same with the live data
Step file specifically includes:
Picture is converted by the document files, and generates the web page address of the picture；
Generate the synchronous documents of the document files Yu the live data, wherein the synchronous documents are described straight for recording
Video file described in the corresponding relationship and/or the live data of live streaming time and the web page address described in multicast data
With the corresponding relationship of the web page address.
3. method according to claim 2, which is characterized in that described whole to the live data and synchronous documents progress
It closes, obtains file destination, specifically include:
Transcoding is carried out to the live data；
Live data after the synchronous documents and transcoding is integrated, file destination is obtained.
4. method as claimed in claim 3, which is characterized in that before the acquisition live data and document page turning data,
Further include:
The collection terminal of collection terminal and the document page turning data to the live data carries out time calibration.
5. the method as described in claim 1-4 any one, which is characterized in that the synchronous documents are network video text track
Road file.
6. method as claimed in claim 5, which is characterized in that it is described the file destination is pushed to play end after,
Further include:
It plays end and parses the file destination, judge whether to need page turning according to the corresponding relationship；
If desired, then it obtains the document files and executes page turn over operation.
7. the synchronizing device of a kind of live video and document page turning characterized by comprising
Data acquisition module: for obtaining live data and document page turning data, wherein the live data includes the live streaming time
And video file corresponding with the live streaming time, the document page turning data include page turning time and when with the page turning
Between corresponding document files；
Synchronous documents generation module: for generating the synchronous documents of the document files Yu the live data, wherein described same
Step file is used to record described in the live data corresponding relationship of live streaming time and the document files and/or described straight
The corresponding relationship of video file described in multicast data and the document files；
It integrates module: for integrating to the live data and the synchronous documents, obtaining file destination；
Pushing module: playing end for the file destination to be pushed to, in order to which the broadcasting end is parsing the target text
Page turning is carried out to document to guarantee video and document-synchronization according to the corresponding relationship when part.
8. device as claimed in claim 7, which is characterized in that the synchronous documents generation module specifically includes:
Conversion unit: for converting picture for the document files, and the web page address of the picture is generated；
Generation unit: for generating the synchronous documents of the document files Yu the live data, wherein the synchronous documents are used
In the corresponding relationship and/or the live data for recording live streaming time and the web page address described in the live data
The corresponding relationship of the video file and the web page address.
9. a kind of streaming media server characterized by comprising
Memory: for storing computer program；
Processor: for executing the computer program, to realize a kind of live streaming view as claimed in any one of claims 1 to 6
The step of frequency and the synchronous method of document page turning.
10. a kind of live broadcast system characterized by comprising live video collection terminal, plays end at document page turning collection terminal, also wraps
Include a kind of streaming media server as claimed in claim 9.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111556329A (en) * | 2020-04-26 | 2020-08-18 | 北京字节跳动网络技术有限公司 | Method and device for inserting media content in live broadcast |
| CN112397104A (en) * | 2020-11-26 | 2021-02-23 | 北京字节跳动网络技术有限公司 | Audio and text synchronization method and device, readable medium and electronic equipment |
| CN113497948A (en) * | 2020-04-08 | 2021-10-12 | 二六三网络通信股份有限公司 | Live broadcasting method and device |
| CN114363684A (en) * | 2021-12-15 | 2022-04-15 | 创盛视联数码科技（北京）有限公司 | Document display method and device and storage medium |
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