CN106604065A - System and method for realizing multi-screen video playing in same screen - Google Patents
System and method for realizing multi-screen video playing in same screen Download PDFInfo
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- CN106604065A CN106604065A CN201611264364.6A CN201611264364A CN106604065A CN 106604065 A CN106604065 A CN 106604065A CN 201611264364 A CN201611264364 A CN 201611264364A CN 106604065 A CN106604065 A CN 106604065A
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- video
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- playback terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/242—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
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/4104—Peripherals receiving signals from specially adapted client devices
- H04N21/4122—Peripherals receiving signals from specially adapted client devices additional display device, e.g. video projector
-
- 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
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/4104—Peripherals receiving signals from specially adapted client devices
- H04N21/4126—The peripheral being portable, e.g. PDAs or mobile phones
-
- 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
- H04N21/4305—Synchronising client clock from received content stream, e.g. locking decoder clock with encoder clock, extraction of the PCR packets
-
- 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
-
- 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
- H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
- H04N21/4342—Demultiplexing isochronously with video sync, e.g. according to bit-parallel or bit-serial interface formats, as SDI
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The invention provides a system and method for realizing multi-screen video playing in a same screen. According to information like distances between a synchronous server and all playing terminals, internet speeds, and types of all the playing terminals, integration and correction are carried out and then synchronous files matching all the playing terminals and a time file are generated, and the generated synchronous files and time file, and a video file are sent to the playing terminals; the playing terminals parse the synchronous files, update the time file based on the synchronous files, and corrects video playing by using the time file, so that same-screen playing of all playing terminals is realized. Besides, the synchronous files refresh the time file at a time interval; and when the number of same-screen playing terminals changes, the synchronous files and the time file are updated, so that the playing progresses of all playing terminals are kept to be synchronous all the time.
Description
Technical field
The invention belongs to Display on the same screen technical field, more particularly to it is a kind of realize multi-screen with screen play video system and
Method.
Background technology
Video playback is widely used in multiple fields such as promotional display, outdoor advertisings, and some occasions need multiple aobvious
Display screen curtain plays same video according to same progress, and synchronous broadcasting for how ensureing video in multiple screens is that multi-screen shows
Show the difficult point of technology.The usual way that existing multi-screen shows is that multiple display eventually is realized using distributor or split screen device
The audio video synchronization at end is played or will be that video file is issued to each playback terminal and plays out by Web broadcast mode, its
Used in distributor or split screen device easily limited by distance, its effective propagation path about at 50 meters or so, when distance increases
When big, transmission signal is of low quality；And adopt Web broadcast mode to receive wide according to priority sequencing due to playback terminal
Signal is broadcast, when terminal quantity is more, signal is received and larger delay is occurred, therefore synchronous effect is unsatisfactory.Existing skill
Art discloses the technology that some multi-screens are played with screen, and such as CN103517153A provides one kind of knowing clearly and realizes multi-screen with shielding broadcasting
The system of video, including communication connection module, same screen playing request module, request processing module and same screen playing module, but should
System can not eliminate playback terminal own hardware condition and playback terminal audio video synchronization is broadcast with inter-system network connection status
Put issuable impact, it is impossible to really ensure that multiple playback terminals synchronously play video.
The content of the invention
In order to solve above-mentioned technical problem, the present invention provides a kind of system for realizing multi-screen with screen broadcasting video, including
Sync server and the multiple playback terminals being connected with the sync server；
The sync server is provided with control module, and the control module is used to receive 2 or more than 2 playback terminals
Video playback when asking, generate time file and the synchronous documents that match with playback terminal, the synchronous documents pass through
Renewal time file is controlling the video playback synchronization of playback terminal；Update mode of the synchronous documents to the time file
For：T+k, wherein, t is the time value before the renewal of time file, -2s<k<2s；When k not in above range when, then stop the broadcasting
Terminal plays provide the nonsynchronous information of video playback；
The playback terminal includes display screen and the controller being connected with the display screen, and the controller is provided with：
Video request module：For generating video playback request；
Video playback module：For playing video file；Each playback terminal each obtains the synchronization for playing video simultaneously
File and time file, video playback module is carried out the broadcasting of video after time file correction；
Synchronous parsing module：For parsing synchronous documents, and time file is updated according to synchronous documents.
It is synchronous with each playback terminal matching that what the present invention was provided realizes that multi-screen is generated with the system that screen plays video
File and time file, playback terminal parsing synchronous documents, according to synchronous documents time file is updated, and using time file pair
Video playback is corrected, so that the playing progress rate synchronization between each playback terminal.
Further, the control module is according between sync server and each playback terminal of transmission video playback request
The information such as the model of distance, network speed and each playback terminal carry out being generated after comprehensive and amendment and match with each playback terminal
Synchronous documents.
Further, the control module, when the playback terminal quantity of video playback request is sent more than 2, root
Synchronous documents and time file are updated according to the change of playback terminal quantity, preferably with the actual play time of each playback terminal
With the mean of the difference of time file original time value, the time file is updated.
Further, the controller is additionally provided with synchronized update module, and the synchronized update module is used for every a timing
Between, update a time file according to synchronous documents.Updating time file according to synchronous documents at regular intervals can be with
The synchronous error of playback terminal is eliminated in time.
Further, the sync server is additionally provided with buffer, and the buffer is for the reception of cache synchronization server
Video flowing, and for playback terminal download play；The sync server is gateway.Buffer is installed in sync server to delay
Video file is deposited, playback terminal can have both been saved and received the time that whole played file needs to spend, playback terminal can be made again
Video playback it is smooth.
The present invention also provides a kind of method for realizing multi-screen with screen broadcasting video, comprises the steps：
S1. playback terminal sends video playback request to sync server；
S2. sync server receive at least one playback terminal transmission video playback request after, incessantly to
Video source server sends video file request, until the response of video source server；
S3. video source server is asked according to video file, sends video file to sync server；
S4. sync server according to send video playback request playback terminal number determine whether generate synchronous documents and
Time file, if generating synchronous documents and time file, synchronous documents, time file and video file is sent jointly to
Playback terminal, if not generating synchronous documents and time file, by video file playback terminal is transmitted directly to,
S5. playback terminal plays video.
Further, the generation of the synchronous documents is specifically included：Sync server is asked according to it with video playback is sent
The information such as the model of distance, network speed and each playback terminal between each playback terminal asked carry out being generated after comprehensive and amendment
The synchronous documents matched with each playback terminal.
Further, methods described also includes：When the playback terminal quantity of video playback request is sent more than 2,
When playback terminal quantity changes, a synchronous documents and time file are updated.
Further, methods described also includes：At regular intervals, when the synchronous documents that playback terminal is received update one time
Between file.
Further, methods described also includes：The sync server buffered video file data, downloads for playback terminal
Play.
What the present invention was provided realizes that multi-screen is broadcast according to sync server with the system and method that screen plays video with each
Putting the information such as the model of distance, network speed and each playback terminal of terminal room carries out generating after comprehensive and amendment and each broadcasting
The synchronous documents of terminal coupling and a time file, and send together with video file to playback terminal, playback terminal parsing
Synchronous documents, according to synchronous documents time file is updated, and video playback is corrected using time file, each so as to realize
The same screen of individual playback terminal is played, additionally, at regular intervals synchronous documents can also refresh time file, and when playing with screen
When playback terminal number changes, synchronous documents and time file can be updated, so as to ensure between each playback terminal
Playing progress rate remain synchronous.
Description of the drawings
Fig. 1 is to realize that multi-screen plays the structural representation of the first embodiment of the system of video with screen；
Fig. 2 is to realize that multi-screen is played the structure of the sync server of the first embodiment of the system of video with screen and shown
It is intended to；
Fig. 3 is to realize that multi-screen plays the structural representation of the playback terminal of the first embodiment of the system of video with screen
Figure；
Fig. 4 is to realize that multi-screen plays the structural representation of the playback terminal of second embodiment of the system of video with screen
Figure；
Fig. 5 is to realize that multi-screen is played the structure of the sync server of the third embodiment of the system of video with screen and shown
It is intended to；
Fig. 6 is to realize that multi-screen plays a playback terminal during the first of the method for video is operated with screen and plays video
Flow chart；
Fig. 7 is to realize that multi-screen is played two or more playback terminal during the first of the method for video is operated with screen and broadcast with screen
The flow chart put；
Fig. 8 is to realize that multi-screen plays the flow chart of second operation of the method for video with screen.
Specific embodiment
With reference to the accompanying drawings and examples, the specific embodiment of the present invention is further described.Following examples are only
For clearly illustrating technical scheme, and can not be limited the scope of the invention with this.
A kind of system for realizing multi-screen with screen broadcasting video of present invention offer, the first embodiment of the system,
As Figure 1-3, including sync server and multiple playback terminals for being connected with the sync server；
The sync server is provided with：
Server com-munication module：For the information exchange between sync server and playback terminal, and sync server
With the information exchange between video source server；
Control module：During for asking in the video playback for receiving 2 or more than 2 playback terminals, time file is generated
And the MPD file matched with playback terminal, the MPD file controls the video of playback terminal by updating time file
Play synchronous；The MPD file is to the update mode of the time file：T+k, wherein, t be time file renewal before when
Between be worth, -2s<k<2s；When k not in above range when, then stop the playback terminal and play or provide that video playback is nonsynchronous to be carried
Show information；
The playback terminal includes display screen and the controller being connected with the display screen, and the controller is provided with：
Terminal communication module：For the information exchange between playback terminal and sync server；
Video request module：For generating video playback request；
Video playback module：For playing video file；The MPD that each playback terminal each obtains broadcasting video simultaneously is literary
Part and time file, video playback module is carried out the broadcasting of video after time file correction；
Synchronous parsing module：For parsing MPD file, and time file is updated according to MPD file.
MPD(Media Presentation Description)：The composition of whole mpeg dash code streams is described, MPD is
One XML Document, by the content of MPD the URL downloaded for HTTP GET can be constructed.MPD file can be added
It is close, refer to http://www.w3.org/TR/xmlenc-core/, it is possible to use digital signature and checking, refer to
http://www.w3.org/TR/xmldsig-core/。
In the present embodiment, the control module is according to sync server and each broadcasting for sending video playback request
The information such as the model of distance, network speed and each playback terminal of terminal room carry out generating after comprehensive and amendment with each broadcasting eventually
The MPD file of end matching.
In the present embodiment, the control module, send video playback request playback terminal quantity more than 2
When, MPD file and time file are updated according to the change of playback terminal quantity, preferably with the actual play of each playback terminal
Time and the mean of the difference of time file original time value, update the time file.
Second embodiment of the system, as shown in figure 4, the controller is additionally provided with synchronized update module, it is described
Synchronized update module is used at regular intervals, and according to MPD file a time file is updated.
The third embodiment of the system, as shown in figure 5, the sync server is additionally provided with buffer, it is described slow
Rushing device is used for the video flowing that cache synchronization server is received, and downloads broadcasting for playback terminal；The sync server is gateway.
The present invention also provides a kind of method for realizing multi-screen with screen broadcasting video, and the first of methods described is operated, when
When only 1 playback terminal sends video playback request, as shown in fig. 6, sync server is receiving regarding for the playback terminal
After frequency playing request, incessantly video file request is sent to video source server, until video source server is responded and passed
Video file is sent, now sync server does not generate MPD file, directly video file is sent to into playback terminal and is played；At this
During playback terminal plays video, sync server receives other 4 playback terminals transmission video playback simultaneously again please
When asking, as shown in fig. 7, sync server according to its with send video playback request 5 playback terminals between distance, network speed with
And the information such as the respective model of 5 playback terminals carries out generating 5 MPD files and 1 time file after comprehensive and amendment；5
Participating in the playback terminal of same screen broadcasting can obtain time file and 1 and this playback terminal pair while video file is received
The MPD file answered, playback terminal is updated using the corresponding MPD file of this playback terminal to time file, video file Jing
Broadcasting is proceeded by after the time file correction crossed after updating.
After playback terminal is played 10 seconds, the MPD file that playback terminal is received refreshes a time file automatically, and using brush
Time file after new is corrected to video playback, if difference of the time value of the time file of playback terminal before and after refreshing
Value then stops the playback terminal and plays or provide on playback terminal the nonsynchronous information of video playback in more than 2s；It
Afterwards every 10 seconds, MPD file all can automatically refresh a time file0
When sync server receives the video playback that the 6th playback terminal send asks, regenerate MPD file and
Time file, the generation of time file is specially：T is calculated respectively1-t0、t2-t0、t3-t0、t4-t0、t5-t0(wherein, t1、t2、
t3、t4、t5For first 5 actual play times for participating in the playback terminal with screen broadcasting, t0Generate for sync server is the last
Time file original time value), then average p of above-mentioned difference is calculated, by t0+ p generates new time file.
During playing with screen, if the quantity for participating in the playback terminal that same screen is played is increased or decreased, and
Participation after change is more than 2 with the playback terminal number that screen is played, and sync server all can be played according to participation after change with screen
The playback terminal MPD file that regenerates time file and match with each playback terminal.
Second operation of methods described, as shown in figure 8, arranging buffer in sync server, caches from Video service
The video flowing that device is obtained, when only 1 playback terminal sends video playback asks, sync server to the playback terminal sends
Video flowing is downloaded and notified, the broadcasting end download video stream simultaneously plays video；When newly-increased 1 playback terminal sends video playback request
When, sync server generates 2 MPD files and 1 time file, and each playback terminal is receiving time file and 1 is right
Start download video stream after the MPD file for answering this playback terminal, time file is entered using this playback terminal corresponding MPD file
Row updates, and the broadcasting of video is proceeded by after the time file correction after renewal.
Claims (10)
1. it is a kind of realize multi-screen with screen play video system, it is characterised in that the system include sync server and
The multiple playback terminals being connected with the sync server；
The sync server is provided with control module, and the control module is used to receive regarding for 2 or more than 2 playback terminals
During frequency playing request, time file and the synchronous documents matched with playback terminal are generated, the synchronous documents are by updating
Time file is controlling the video playback synchronization of playback terminal；The synchronous documents are to the update mode of the time file：t
+ k, wherein, t is the time value before the renewal of time file, -2s<k<2s；When k not in above range when, then stop the playback terminal
Play or provide the nonsynchronous information of video playback；
The playback terminal includes display screen and the controller being connected with the display screen, and the controller is provided with：
Video request module：For generating video playback request；
Video playback module：For playing video file；Each playback terminal each obtains the synchronous documents for playing video simultaneously
With time file, video playback module carried out the broadcasting of video after time file correction；
Synchronous parsing module：For parsing synchronous documents, and time file is updated according to synchronous documents.
2. system according to claim 1, it is characterised in that the control module according to sync server with send video
The information such as the model of distance, network speed and each playback terminal between each playback terminal of playing request carry out comprehensive and amendment
The synchronous documents matched with each playback terminal are generated afterwards.
3. system according to claim 1, it is characterised in that the control module, is sending broadcasting for video playback request
When putting terminal quantity more than 2, synchronous documents and time file are updated according to the change of playback terminal quantity, preferably with each
The actual play time of individual playback terminal and the mean of the difference of time file original time value, update the time file.
4. system according to claim 1, it is characterised in that the controller is additionally provided with synchronized update module, described same
Step update module is used at regular intervals, according to synchronous documents a time file is updated.
5. system according to claim 1, it is characterised in that the sync server is additionally provided with buffer, the buffering
Device is used for the video flowing that cache synchronization server is received, and downloads broadcasting for playback terminal；The sync server is gateway.
6. it is a kind of to realize the method that multi-screen plays video with screen, it is characterised in that methods described comprises the steps：
S1. playback terminal sends video playback request to sync server；
S2. sync server receive at least one playback terminal transmission video playback request after, incessantly to video
Source server sends video file request, until the response of video source server；
S3. video source server is asked according to video file, sends video file to sync server；
S4. sync server determines whether to generate synchronous documents and time according to the playback terminal number for sending video playback request
File, if generating synchronous documents and time file, synchronous documents, time file and video file is sent jointly to play
Terminal, if not generating synchronous documents and time file, by video file playback terminal is transmitted directly to,
S5. playback terminal plays video.
7. method according to claim 6, it is characterised in that the generation of the synchronous documents is specifically included：Synchronous service
Device is according to model of distance, network speed and each playback terminal between its each playback terminal with transmission video playback request etc.
Information carries out generating the synchronous documents matched with each playback terminal after comprehensive and amendment.
8. method according to claim 6, it is characterised in that methods described also includes：When transmission video playback request
When playback terminal quantity is more than 2, when playback terminal quantity changes, a synchronous documents and time text are updated
Part.
9. method according to claim 6, it is characterised in that methods described also includes：At regular intervals, playback terminal
The synchronous documents of reception update a time file.
10. method according to claim 6, it is characterised in that methods described also includes：The sync server caching is regarded
Frequency file data, download for playback terminal and play.
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| CN201611264364.6A CN106604065B (en) | 2016-12-30 | 2016-12-30 | A kind of system and method realized multi-screen and play video with screen |
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| CN201611264364.6A CN106604065B (en) | 2016-12-30 | 2016-12-30 | A kind of system and method realized multi-screen and play video with screen |
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| CN106604065B CN106604065B (en) | 2019-10-25 |
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| CN107087152B (en) * | 2017-05-09 | 2018-08-14 | 成都陌云科技有限公司 | Three-dimensional imaging information communication system |
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| CN107645669A (en) * | 2017-10-18 | 2018-01-30 | 青岛桐轩佳航科技有限公司 | Multi-screen display control method, apparatus and system |
| CN109005429A (en) * | 2018-08-31 | 2018-12-14 | 广州视源电子科技股份有限公司 | Flat resource playing method and device, server, management terminal and education flat |
| CN112073760A (en) * | 2019-06-10 | 2020-12-11 | 京东方科技集团股份有限公司 | Display system and clock synchronization method, device and equipment thereof |
| CN112073760B (en) * | 2019-06-10 | 2023-02-07 | 京东方科技集团股份有限公司 | Display system and clock synchronization method, device and equipment thereof |
| CN114245186A (en) * | 2021-12-15 | 2022-03-25 | 咪咕音乐有限公司 | Control method, device and equipment for multi-screen cooperative playing and readable storage medium |
| CN114245186B (en) * | 2021-12-15 | 2024-01-30 | 咪咕音乐有限公司 | Control method, device and equipment for multi-screen collaborative playing and readable storage medium |
| CN114339103A (en) * | 2021-12-31 | 2022-04-12 | 广东泓胜科技股份有限公司 | Method and system for triggering law enforcement recorder in real time by checking and monitoring video management system |
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