CN110278457A - The more audio video synchronization playback methods of more hosts and system - Google Patents
The more audio video synchronization playback methods of more hosts and system Download PDFInfo
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- CN110278457A CN110278457A CN201910447822.7A CN201910447822A CN110278457A CN 110278457 A CN110278457 A CN 110278457A CN 201910447822 A CN201910447822 A CN 201910447822A CN 110278457 A CN110278457 A CN 110278457A
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- Prior art keywords
- video
- host
- synchronization
- video playing
- instruction
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Classifications
-
- 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
- H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
- H04N21/2387—Stream processing in response to a playback request from an end-user, e.g. for trick-play
-
- 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
- H04N21/4302—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]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/643—Communication protocols
Abstract
The invention discloses a kind of more more audio video synchronization playback methods of host, be arranged video control server, several video playing hosts and with the one-to-one video frequency projector of video playing host；One is chosen from several video playing hosts and is used as main video playing host, other are from video playing host；Main video playing host is synchronous with from video playing host time；Video controls serve end program and receives video playing, stopping, synchronization frame instruction, is forwarded to each video control client-side program；Video control client-side program parses the instruction that receives, makes corresponding logic control and send final vision operation instructing to the video jukebox software；Video control serve end program regularly sends synchronization frame instruction, it is ensured that audio video synchronization.The present invention carries out audio video synchronization broadcasting using more video playing hosts, and host-guest architecture carries out time synchronization, guarantees that video playing is synchronous and carries out, requires to substantially reduce to the hardware configuration of host.
Description
Technical field
The present invention relates to audio video synchronization play-back technology field, particularly relate to a kind of more audio video synchronization playback methods of more hosts and
System.
Background technique
In today that multi-media sharing hall increasingly rapidly develops, the diversity that multimedia content is shown is more and more extensive, demand
Also become increasingly harsher, the demand that more more video contents of host are played simultaneously all exists in current all newly-built exhibition rooms substantially.
More more video contents of host, which are played simultaneously, to be primarily referred to as multiple computers host and receives after play instruction while playing different views
Frequency file, each host respectively by multiple and different positions of video content projection to the same space, content synchronization play with
Afterwards, the content of this space representation is globality, continuity, thus reach the spatial user experience effect of immersion, it is synchronous
The precise control of broadcasting directly affects the user experience effect of the exhibition item.And being played simultaneously with video frame synchronization is also more hosts
The key point that more audio video synchronizations play.Present invention generally provides a kind of solution that more more video contents of host are played simultaneously,
Realize being played simultaneously of the more video contents of more hosts, frame synchronization of the video content in playing process.
Video synchronization method common at present is multiple videos to be uniformly placed on to a host to carry out unified broadcasting, and need
Show that the host of content then accesses the corresponding data stream port of primary server in such a way that Streaming Media is subscribed to, to reach displaying
The purpose of content.The program is when playing multiple high quality (4K, 6K) video files, it is desirable that the configuration of this host must be quite
Height can have whole Caton phenomenon when video file is excessive.Broadcasting for multiple high-quality video files is carried out using a host
It puts, video card capabilities are limited, and output performance bottleneck is easy to be highlighted.
Summary of the invention
The present invention proposes a kind of more audio video synchronization playback methods of more hosts and system, solves and requires host in the prior art
It configures excessively high, can have whole Caton phenomenon when video file is excessive, a host be used to carry out multiple high-quality video files
Broadcasting, video card capabilities are limited, and output performance bottleneck is easy to the problem of being highlighted.
The technical scheme of the present invention is realized as follows:
A kind of more audio video synchronization playback methods of more hosts, specifically includes the following steps:
S1 is arranged video control server, several video playing hosts and corresponds with the video playing host
Video frequency projector, dispose clock synchronous service end program and video on video control server and control serve end program,
Clock sync client program, video control client-side program and video jukebox software are disposed on video playing host；
S2 chooses one from several video playing hosts and is used as main video playing host, other are from video playing master
Machine；
S3, main video playing host synchronize the correct time to this server-side from Internet；
S4 is based on clock sync client program from video playing host and main video playing host carries out time synchronization；
S5, video control serve end program and receive video playing, stopping, synchronization frame instruction, are forwarded to each video control
Client-side program；
S6, video control client-side program parse the instruction received, make corresponding logic control and send final view
Frequency operational order is to the video jukebox software；
S7, video control serve end program regularly send synchronization frame instruction, it is ensured that audio video synchronization.
As a preferred embodiment of the present invention, step S3 specifically includes following steps
S31 is serviced from Internet Server based on NTP and is got the newest time；
S32 is the newest time got the system time setting of current hosts.
As a preferred embodiment of the present invention, step S4 specifically includes the following steps:
S41 gets the newest time from main video playing host using local area network；
S42 is the newest time got the system time setting of current hosts.
As a preferred embodiment of the present invention, step S5 specifically includes the following steps:
S51 is based on udp protocol, receives the operational order that external equipment sends over, including but not limited to play, stop,
Frame synchronization instruction；
S52 judges whether the instruction sended over is correct instruction format, content；
S53 generates corresponding synchronic command format by the operational order received, format are as follows:<operational order>:<behaviour
Make the time >；
S54 successively sends operational order to the slave video playing Host List set.
As a preferred embodiment of the present invention, the operating time in step S53 is system according to present system time,
The new time is automatically generated with the interval time of setting.
As a preferred embodiment of the present invention, step S6 specifically includes the following steps:
S61 receives the synchronization frame instruction that video control serve end program sends over；
S62 judges whether the instruction format received is correct；
The synchronization frame received instruction parsing is become video playing control instruction, issues time controller module by S63；
S64, time controller module, which does not arrive, enters wait state when playing video；
S65 judges whether to reach the transmission video playing control instruction time；
S66 sends the video playing control instruction that can be identified to the video jukebox software set.
As a preferred embodiment of the present invention, step S7 specifically includes the following steps:
A sync interval time is arranged in S71；
S72, if having reached interval time, not up to interval time is at wait state, otherwise performs the next step
Suddenly；
S73 generates synchronization frame order parameter by the video currently playing time；
The synchronization frame instruction of generation is sent to video control client-side program, then controls client-side program by video by S74
Control logic simultaneously sends frame control instruction to video jukebox software.
A kind of more audio video synchronization play systems of more hosts, including
Video control server, several video playing hosts and throws with the one-to-one video of the video playing host
Shadow machine disposes clock synchronous service end program sometimes and video control serve end program, video playing master on video control server
Clock sync client program, video control client-side program and video jukebox software sometimes are disposed on machine；
The video control server turns for receiving video playing, the stopping, synchronization frame instruction of external equipment transmission
It is sent to each video playing host, and regularly sends synchronization frame and instructs and give video playing host；
The video playing host, for parsing video playing, the stopping, synchronization of video control server after time synchronization
Frame instruction controls the video frequency projector by video jukebox software and carries out video projection broadcasting.
The beneficial effects of the present invention are: audio video synchronization broadcasting, video playing host are carried out using more video playing hosts
Time synchronization is carried out for host-guest architecture, guarantees that video playing is synchronous and carries out, the hardware configuration of host is required to substantially reduce.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without any creative labor, may be used also for those of ordinary skill in the art
To obtain other drawings based on these drawings.
Fig. 1 is a kind of flow chart of more more audio video synchronization playback method one embodiment of host of the present invention；
Fig. 2 is the specific flow chart of step S3 in Fig. 1；
Fig. 3 is the specific flow chart of step S4 in Fig. 1；
Fig. 4 is the specific flow chart of step S5 in Fig. 1；
Fig. 5 is the specific flow chart of step S6 in Fig. 1；
Fig. 6 is the specific flow chart of step S7 in Fig. 1；
Fig. 7 is a kind of structural framing figure of more more audio video synchronization play system one embodiment of host of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
As shown in figs 1 to 6, the invention proposes a kind of more more audio video synchronization playback methods of host, following step is specifically included
It is rapid:
S1 is arranged video control server, several video playing hosts and regards correspondingly with video playing host
Frequency projector, disposes clock synchronous service end program on video control server and video controls serve end program, in video
It plays and disposes clock sync client program, video control client-side program and video jukebox software on host；
S2 chooses one from several video playing hosts and is used as main video playing host, other are from video playing master
Machine；
S3, main video playing host synchronize the correct time to this server-side from Internet；
S4 is based on clock sync client program from video playing host and main video playing host carries out time synchronization；
S5, video control serve end program and receive video playing, stopping, synchronization frame instruction, are forwarded to each video control
Client-side program；
S6, video control client-side program parse the instruction received, make corresponding logic control and send final view
Frequency operational order is to video jukebox software；
S7, video control serve end program regularly send synchronization frame instruction, it is ensured that audio video synchronization.
The present invention solves multi-host system clock synchronization issue, and more more audio video synchronizations of host play in corresponding video
Hold, stops video content problem being played on；The video frame of synchronous multiple host in video content playing process, prevents interior
Hold asynchronous.
Single video playing host only plays single video file.
Video frequency projector is used to video content projecting to different location respectively.
As a preferred embodiment of the present invention, step S3 specifically includes following steps
S31 is serviced from Internet Server based on NTP and is got the newest time；
S32 is the newest time got the system time setting of current hosts.
The synchronous method of multi-host system clock is using ntp server [Network Time in this solution
Protocol (NTP)] mode.It is main service side used as video playing control that wherein a certain host is chosen in multiple host,
Deployment clock synchronizes main service routine, synchronizes the correct time to this server-side from Internet, then opens [W32Time] clothes
Registration table is modified in business, to open NTP service, Scheduler-Service is provided from video playing host for other several, to reach more masters
The clock of machine is synchronous.
As a preferred embodiment of the present invention, step S4 specifically includes the following steps:
S41 gets the newest time from main video playing host using local area network；
S42 is the newest time got the system time setting of current hosts.
As a preferred embodiment of the present invention, step S5 specifically includes the following steps:
S51 is based on udp protocol, receives the operational order that external equipment sends over, including but not limited to play, stop,
Frame synchronization instruction；
S52 judges whether the instruction sended over is correct instruction format, content；
S53 generates corresponding synchronic command format by the operational order received, format are as follows:<operational order>:<behaviour
Make the time >；Such as play:2018-01-01 08:00:00, expression starts to play video in 2018-01-01 08:00:00.This
Operating time is system according to present system time, and the new time is automatically generated with the interval time of setting.To ensure more masters
Machine is operated in same time (in logic).
S54 successively sends operational order to the slave video playing Host List set.
As a preferred embodiment of the present invention, the operating time in step S53 is system according to present system time,
The new time is automatically generated with the interval time of setting.
As a preferred embodiment of the present invention, step S6 specifically includes the following steps:
S61 receives the synchronization frame instruction that video control serve end program sends over；
S62 judges whether the instruction format received is correct；
The synchronization frame received instruction parsing is become video playing control instruction, issues time controller module by S63；
S64, time controller module, which does not arrive, enters wait state when playing video；
S65 judges whether to reach the transmission video playing control instruction time；
S66 sends the video playing control instruction that can be identified to the video jukebox software set.
As a preferred embodiment of the present invention, step S7 specifically includes the following steps:
A sync interval time is arranged in S71；
S72, if having reached interval time, not up to interval time is at wait state, otherwise performs the next step
Suddenly；
S73 generates synchronization frame order parameter by the video currently playing time；
The synchronization frame instruction of generation is sent to video control client-side program, then controls client-side program by video by S74
Control logic simultaneously sends frame control instruction to video jukebox software.Video jukebox software: the video playing based on the exploitation of VLC kernel
Software externally has the communication interface based on udp protocol, can receive the vision operation control sent by udp protocol and refers to
It enables.
Video frame synchronization: when starting to play, video control server-side will record currently playing progress, can be periodically to each
Host sends frame synchronization instruction, to ensure the audio video synchronization played on each host.If the video on certain host is asynchronous,
There may be an of short duration frame-skipping process when synchronous.
As shown in fig. 7, the present invention also puts forward a kind of more audio video synchronization play systems of more hosts, including
Video control server, several video playing hosts and projects with the one-to-one video of video playing host
Machine disposes clock synchronous service end program sometimes and video control serve end program, video playing host on video control server
Sometimes clock sync client program, video control client-side program and video jukebox software for upper deployment；
Video control server is forwarded to for receiving video playing, the stopping, synchronization frame instruction of external equipment transmission
Each video playing host, and regularly send synchronization frame and instruct and give video playing host；
Video playing host refers to for the video playing of parsing video control server, stopping, synchronization frame after time synchronization
It enables, video frequency projector is controlled by video jukebox software and carries out video projection broadcasting.
The present invention carries out audio video synchronization broadcasting using more video playing hosts, when video playing host is that host-guest architecture carries out
Between it is synchronous, guarantee that video playing is synchronous and carry out, the hardware configuration of host is required to substantially reduce.
The above is merely preferred embodiments of the present invention, be not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of more audio video synchronization playback methods of more hosts, which is characterized in that specifically includes the following steps:
S1 is arranged video control server, several video playing hosts and regards correspondingly with the video playing host
Frequency projector, disposes clock synchronous service end program on video control server and video controls serve end program, in video
It plays and disposes clock sync client program, video control client-side program and video jukebox software on host；
S2 chooses one from several video playing hosts and is used as main video playing host, other are from video playing host；
S3, main video playing host synchronize the correct time to this server-side from Internet；
S4 is based on clock sync client program from video playing host and main video playing host carries out time synchronization；
S5, video control serve end program and receive video playing, stopping, synchronization frame instruction, are forwarded to each video control client
Hold program；
S6, video control client-side program parse the instruction received, make corresponding logic control and send final video behaviour
It instructs to the video jukebox software；
S7, video control serve end program regularly send synchronization frame instruction, it is ensured that audio video synchronization.
2. the more audio video synchronization playback methods of more hosts according to claim 1, which is characterized in that step S3 specifically include with
Lower step
S31 is serviced from Internet Server based on NTP and is got the newest time；
S32 is the newest time got the system time setting of current hosts.
3. the more audio video synchronization playback methods of more hosts according to claim 1 or 2, which is characterized in that step S4 is specifically wrapped
Include following steps:
S41 gets the newest time from main video playing host using local area network；
S42 is the newest time got the system time setting of current hosts.
4. the more audio video synchronization playback methods of more hosts according to claim 1 or 2, which is characterized in that step S5 is specifically wrapped
Include following steps:
S51 is based on udp protocol, receives the operational order that external equipment sends over, and including but not limited to broadcasting, stopping, frame is same
Step instruction；
S52 judges whether the instruction sended over is correct instruction format, content；
S53 generates corresponding synchronic command format, format are as follows:<operational order>: when<operation by the operational order received
Between >；
S54 successively sends operational order to the slave video playing Host List set.
5. the more audio video synchronization playback methods of more hosts according to claim 4, which is characterized in that the operation in step S53
Time is system according to present system time, and the new time is automatically generated with the interval time of setting.
6. the more audio video synchronization playback methods of more hosts according to claim 1, which is characterized in that step S6 specifically include with
Lower step:
S61 receives the synchronization frame instruction that video control serve end program sends over；
S62 judges whether the instruction format received is correct；
The synchronization frame received instruction parsing is become video playing control instruction, issues time controller module by S63；
S64, time controller module, which does not arrive, enters wait state when playing video；
S65 judges whether to reach the transmission video playing control instruction time；
S66 sends the video playing control instruction that can be identified to the video jukebox software set.
7. the more audio video synchronization playback methods of more hosts according to claim 1, which is characterized in that step S7 specifically include with
Lower step:
A sync interval time is arranged in S71；
S72, if having reached interval time, not up to interval time is at wait state, otherwise performs the next step rapid；
S73 generates synchronization frame order parameter by the video currently playing time；
The synchronization frame instruction of generation is sent to video control client-side program by S74, then by video control client-side program control
Logic simultaneously sends frame control instruction to video jukebox software.
8. a kind of more audio video synchronization play systems of more hosts, which is characterized in that including
Video control server, several video playing hosts and projects with the one-to-one video of the video playing host
Machine disposes clock synchronous service end program sometimes and video control serve end program, video playing host on video control server
Sometimes clock sync client program, video control client-side program and video jukebox software for upper deployment；
The video control server is forwarded to for receiving video playing, the stopping, synchronization frame instruction of external equipment transmission
Each video playing host, and regularly send synchronization frame and instruct and give video playing host；
The video playing host refers to for the video playing of parsing video control server, stopping, synchronization frame after time synchronization
It enables, the video frequency projector is controlled by video jukebox software and carries out video projection broadcasting.
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| CN201910447822.7A CN110278457A (en) | 2019-05-27 | 2019-05-27 | The more audio video synchronization playback methods of more hosts and system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111031374A (en) * | 2019-12-26 | 2020-04-17 | 大庆思特传媒科技有限公司 | System and method for controlling synchronous operation of multi-computer video and software |
| CN112702620A (en) * | 2020-12-29 | 2021-04-23 | 四川长虹电器股份有限公司 | Method for realizing multi-screen synchronous playing of player based on gstreamer |
| CN112770164A (en) * | 2020-12-22 | 2021-05-07 | 上海幻维数码创意科技股份有限公司 | Video synchronous playing method |
| CN115243088A (en) * | 2022-07-21 | 2022-10-25 | 苏州金螳螂文化发展股份有限公司 | Multi-host video frame-level synchronous rendering method |
| CN117061717A (en) * | 2023-10-12 | 2023-11-14 | 杭州罗莱迪思科技股份有限公司 | Projection spliced video effective control method, system and application thereof |
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2019
- 2019-05-27 CN CN201910447822.7A patent/CN110278457A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111031374A (en) * | 2019-12-26 | 2020-04-17 | 大庆思特传媒科技有限公司 | System and method for controlling synchronous operation of multi-computer video and software |
| CN112770164A (en) * | 2020-12-22 | 2021-05-07 | 上海幻维数码创意科技股份有限公司 | Video synchronous playing method |
| CN112702620A (en) * | 2020-12-29 | 2021-04-23 | 四川长虹电器股份有限公司 | Method for realizing multi-screen synchronous playing of player based on gstreamer |
| CN115243088A (en) * | 2022-07-21 | 2022-10-25 | 苏州金螳螂文化发展股份有限公司 | Multi-host video frame-level synchronous rendering method |
| CN117061717A (en) * | 2023-10-12 | 2023-11-14 | 杭州罗莱迪思科技股份有限公司 | Projection spliced video effective control method, system and application thereof |
| CN117061717B (en) * | 2023-10-12 | 2024-01-09 | 杭州罗莱迪思科技股份有限公司 | Projection spliced video effective control method, system and application thereof |
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