CN108696720A - A kind of video scheduling system and method suitable for satellite communication - Google Patents
A kind of video scheduling system and method suitable for satellite communication Download PDFInfo
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- CN108696720A CN108696720A CN201810429259.6A CN201810429259A CN108696720A CN 108696720 A CN108696720 A CN 108696720A CN 201810429259 A CN201810429259 A CN 201810429259A CN 108696720 A CN108696720 A CN 108696720A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/181—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a plurality of remote sources
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/141—Systems for two-way working between two video terminals, e.g. videophone
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/15—Conference systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/20—Adaptations for transmission via a GHz frequency band, e.g. via satellite
Abstract
The present invention discloses a kind of video scheduling system suitable for satellite communication, and video acquisition terminal acquisition vision signal is simultaneously encoded, and the video main stream after coding is sent to video pre-filtering forwarding module, and video secondary flow is sent to video dispatching terminal;Video dispatching terminal response user operates and generates control instruction, while receiving video secondary flow and being decoded broadcasting to it;Video pre-filtering forwarding module receives control instruction and video main stream, the video main stream for video of being confirmed as broadcasting TV programs by satellite is pre-processed, it is then sent to opposite end, the media data from satellite channel is received simultaneously and identity validation is carried out to it, is forwarded to video playing terminal after being pre-processed to it if being confirmed as opposite end video main stream again and is decoded broadcasting.The present invention is suitable for the bidirectional real-time of satellite video, can realize supervision, scheduling and the push of local multi-channel video, can be very good mutually switching between solving the problems, such as multi-channel video and sends.
Description
Technical field
The application belongs to video dispatching technical field, and in particular to a kind of video scheduling system suitable for satellite communication and
Method.
Background technology
With the raising of communication technology of satellite level, satellite communication be more and more widely used in industry-by-industry field into
Row video communication, especially news interview, military communication, geological prospecting, earthquake relief work, forest fire protection etc..But it existing defends
Star video communication system can only send single video source, and replacement video source is cumbersome, cannot achieve the arbitrary of multi-channel video
Switching.If being carried out at the same time the satellite communication of multi-channel video, it is necessary to use more satellite communication equipments, not only increase and use
Cost, and waste a large amount of precious satellite channel resources.There is various problems for the video scheduling system in other fields, uncomfortable
It shares in satellite communication.
A kind of patent " monitor video method for pushing " of 104639906 A of Publication No. CN, includes the following steps:Each
Camera is all connect with SCSI hard disk video recorder, and SCSI hard disk video recorder is connect with video push work station, video push work
It stands and is connect with RTMP servers, the Web server and the signaling management end, the SQL database and the video push
Work station is connected using Internet network.This method can not need the storage system of big memory, and automatic real time push monitoring regards
Frequently, each user utilizes respective network unique identity access monitoring video push system, watches at any time, prevents user hidden
Private leakage.But this method realization is complex, needs a variety of server apparatus, and can only realize the single-phase transmission of multi-channel video,
The transmission of single HD video and any switching laws of multi-channel video are cannot achieve, satellite communication is not suitable for.
A kind of patent application " method and system of video push " of Publication No. CN103533389 A, the clothes in system
Business device receives the request for carrying out self terminal, and the terminal list and the video code flow listed files are issued to terminal;Then service
Device receives the video bitstream file information for carrying out self terminal and target terminal mark;Server finds target according to target terminal mark
Terminal, and the video bitstream file information is directly sent to target terminal.This method can improve the efficiency of processing connection, carry
High-throughput makes user obtain better video tastes.But the system is complex, needs to use dispatch server, video
It is also relatively complicated to push flow, and the essence of this method is that remote control video is downloaded, and cannot achieve the real-time Communication for Power of video.
Invention content
The invention discloses a kind of video scheduling systems and method suitable for satellite communication, are suitable for the double of satellite video
To real-time Communication for Power, supervision, scheduling and the push of local multi-channel video can be realized, can be very good to solve between multi-channel video mutually
The problem of switching is sent.
Technical solution:The invention discloses a kind of video scheduling system suitable for satellite communication, including video dispatching are whole
End, video pre-filtering forwarding module, video playing terminal and multi-channel video capturing terminal, wherein:
Video acquisition terminal acquires vision signal, and is encoded to collected video media-data, after coding
Video main stream is sent to the video pre-filtering forwarding module being attached thereto, and the video secondary flow after coding is sent to and is attached thereto
Video dispatching terminal;
Video dispatching terminal, response user are selected as the operation of video of broadcasting TV programs by satellite to be sent, generate corresponding control and refer to
It enables and is sent to the video pre-filtering forwarding module being attached thereto;Receive the video secondary flow that each road video acquisition terminal is sent and right
It is decoded broadcasting, to realize the real-time supervision to multi-channel video secondary flow;
Video pre-filtering forwarding module receives control instruction and multi-channel video capturing terminal hair that video dispatching terminal is sent out
The video main stream sent judges whether the video main stream that receives is the video main stream of video of broadcasting TV programs by satellite according to control instruction, and to true
The video main stream of video of thinking to broadcast TV programs by satellite is pre-processed, and then sends it to opposite end by satellite channel again;It receives to defend oneself
The media data of star channel, and identity validation is carried out to it according to the messaging parameter instruction received in link setup communication process, if
It is confirmed as being forwarded to the video playing terminal being attached thereto again after opposite end video main stream then pre-processes it;
Video playing terminal receives the video main stream that video pre-filtering forwarding module is sent, and is decoded broadcasting to it.
Invention additionally discloses a kind of video dispatching methods suitable for satellite communication, pass through the first video scheduling system and
Two video scheduling systems realize the bidirectional real-time of satellite video, and the first video scheduling system and the second video scheduling system are equal
With above-mentioned any one feature;
First video acquisition terminal of the first video scheduling system acquires vision signal, and to collected video media number
According to being encoded, the video main stream after coding is sent to the first video pre-filtering forwarding module being attached thereto, after coding
Video secondary flow be sent to the first video dispatching terminal being attached thereto;
First video dispatching terminal response user of the first video scheduling system is chosen as video of broadcasting TV programs by satellite to be sent
Operation, generates corresponding control instruction and is sent to the first video pre-filtering forwarding module being attached thereto;
First video pre-filtering forwarding module of the first video scheduling system receives the control that the first video dispatching terminal is sent out
The video main stream that system instruction and each road the first video acquisition terminal are sent judges that the video main stream received is according to control instruction
No is the video main stream of video of broadcasting TV programs by satellite, and is pre-processed to the video main stream for video of being confirmed as broadcasting TV programs by satellite, and is then believed by satellite
Road sends it to the second video scheduling system;First video pre-filtering forwarding module by satellite channel receiving media data,
Identity validation is carried out to the media data received according to the messaging parameter instruction received in link setup communication process, and to confirming
Video main stream for opposite end video is pre-processed, and pretreated media data is then sent to first be attached thereto again
Video playing terminal;
First video playing terminal of the first video scheduling system receives the first video pre-filtering forwarding mould being attached thereto
The opposite end video main stream that block is sent, and broadcasting is decoded to it.
In above-mentioned video scheduling system or video dispatching method:
As a preferred embodiment, video media-data uses UDP or TCP/IP data formats, will be in video media-data
Source address and destination address as its identity.
As a preferred embodiment, video media-data use UDP message format, UDP message header include source address and
Destination address;Control instruction information includes to send purpose as the source address of video of broadcasting TV programs by satellite to be sent and as video of broadcasting TV programs by satellite
The opposite end mailing address on ground;Messaging parameter instruction includes mailing address and opposite end video hair of the opposite end video in satellite communication
Send the mailing address of destination;
Video pre-filtering forwarding module judges the video acquisition terminal according to the source address for video of broadcasting TV programs by satellite in control instruction
Whether the video main stream of transmission is the video main stream of video of broadcasting TV programs by satellite, and the pretreatment to the video main stream for video of being confirmed as broadcasting TV programs by satellite refers to
The header for video main stream of broadcasting TV programs by satellite is modified as follows:It is mailing address of the machine in satellite communication by source address modification, by mesh
It is revised as opposite end mailing address in control instruction in mark address;
Video pre-filtering forwarding module is according to mailing address in messaging parameter instruction to being received by satellite channel
Media data carries out identity validation, and the pretreatment to being confirmed as opposite end video main stream refers to making such as to the header of opposite end video main stream
Lower modification:By the address for the video pre-filtering forwarding module that source address modification is internal system, destination address is revised as system
The address of internal video playing terminal.
As a preferred embodiment, media data is packaged into the stream media format based on communication protocol.
As a preferred embodiment, the broadcast TV programs by satellite video secondary flow of video of video dispatching terminal-pair is marked, and passes through pretreatment
Communication protocol between forwarding module and video dispatching terminal checks the push state of the video main stream for video of broadcasting TV programs by satellite.
As a preferred embodiment, video acquisition terminal includes wired video acquisition terminal and wireless video collecting terminal,
Wherein:Cable video acquisition terminal, and video pre-filtering forwarding module wired connection, configured with for acquiring regarding for vision signal
Frequency collecting unit and coding unit for being encoded to collected vision signal;Wireless video collecting terminal, with video
Pre-process forwarding module be wirelessly connected, configured with for acquiring vision signal video acquisition unit and for being regarded to collected
The coding unit that frequency signal is encoded.
As a preferred embodiment, video acquisition unit is the high-definition camera with digital HDMI high-definition signals output function
Machine;Video encoding unit is using H.265 efficient video coding technique, for realizing the coding of video high definition mainstream and secondary flow.
As a preferred embodiment, video scheduling system further includes wireless transport module, and wireless video collecting terminal passes through
Wireless transport module is wirelessly connected with video pre-filtering forwarding module, and wireless transport module and wireless video collecting terminal are based on moving
State MESH self-organizing networks.
As a preferred embodiment, further include video storage modules, for storing the transmission of video pre-filtering forwarding module
Video main stream.
As a preferred embodiment, video playing terminal, which has, supports 720P or more resolution videos to decode playing function.
It should be noted that video (media data flow) signified in the present invention contains audio and video.
Video scheduling system and method disclosed by the invention suitable for satellite communication has the advantages that:
(1) a kind of means that can carry out real-time high-definition satellite audio/video communication are provided, video main stream can be passed in real time
It is defeated by opposite end satellite station, while the video main stream that satellite station transmission in opposite end comes can be watched in real time.It is real to can be applied to video conference etc.
Shi Tongxin.
(2) it supervised, dispatched, pushed by video source, to matchmaker according to the actual needs of user based on the system
Volume data is screened in advance, reduces the quantity of satellite channel equipment, reduces use cost, while having saved satellite channel
Resource realizes efficient live video communication.
(3) this major-minor shunting processing proposed by the present invention, makes operator that can supervise local video acquisition terminal in real time and adopts
The push state of the video secondary flow and video of broadcasting TV programs by satellite that collect, without being supervised by playing back, there is no delays;And due to regarding
Frequency dispatch terminal only receives auxiliary streaming video, does not handle video main stream, reduces its data processing amount, reduces the requirement to hardware device
And input cost.
(4) satellite communication station can acquire up to 255 road videos, including multichannel wired video and multiple wireless video simultaneously,
Satellite operator can supervise and control simultaneously the state of collected video, and select wherein to be defended as video of broadcasting TV programs by satellite all the way
Star communicates, and video switching time is short, non-delay.Wireless video collecting terminal can be extended to 16 tunnels, be wirelessly transferred the nothing of use
Line ad hoc network can carry out automatic transfer, and practical distance is up to 5 kilometers.
(5) local video network and satellite video channel network are mutually isolated, and mapping connection is carried out by self-defined gateway,
There are protection and buffer action well to satellite video channel.
(6) H.265 high definition coding mode can be used in Video coding, supports 1080P (simultaneous interpretation of 1Mbps bandwidth audio and video), can
Video high definition mainstream and the smaller secondary flow of bandwidth occupancy are encoded out simultaneously so that the Internet video of output is under limited satellite bandwidth
Transmit higher quality.
Description of the drawings
Fig. 1 is a kind of video flow diagram of video scheduling system in embodiment;
Fig. 2 is a kind of command information schematic diagram of video scheduling system in embodiment;
Fig. 3 is a kind of composition schematic diagram of video playing terminal in embodiment;
Fig. 4 is a kind of video push flow chart of video dispatching method in embodiment;
Fig. 5 is a kind of video reception flow chart of video dispatching method in embodiment.
Specific implementation mode
Below in conjunction with the accompanying drawings and specific embodiment, technical scheme of the present invention is described in detail.
A kind of video scheduling system, including 1 (IP of video dispatching terminal are disclosed in embodiment:192.168.1.100), regard
2 (IP of frequency pretreatment forwarding module:192.168.1.2), 3 (IP of wireless transport module:192.168.1.101), cable video adopts
Collect 5 (IP of terminal:192.168.1.67), 4 (IP of video playing terminal:192.168.1.66), this programme system is also matched with three
A 6 (IP of wireless video collecting terminal:192.168.1.167/168/169).
Video dispatching terminal 1 is the equipment for having multichannel video decoding playing function, using Android in embodiment
Or the tablet computer of windows operating systems, video dispatching software is installed.
The video dispatching software configuration of installation has following procedure unit:Video secondary flow supervises unit 11, video push scheduling
Unit 12, video acquisition Terminal Control Element 13, state receives and display unit 14, to realize that video secondary flow supervises function, control
System instruction sending function, system mode such as show at the functions.The system mode includes mainly:Each module and terminal work in system
Make state, video push state, wireless video collecting connection status etc..
Video secondary flow supervises unit 11:We specifically can be used from the video decoding plug-in of exploitation, receives each road video and adopts
The video secondary flow of collection terminal transmission is simultaneously decoded it broadcasting, to realize the real-time supervision to multi-channel video secondary flow.Embodiment
In be to be occupied little space based on dedicated video decoding plug-in H.265, resource requirement is few, plug-in unit include image sharpening, special object
The functions such as body identification (such as:Recognition of face).
Video push scheduling unit 12:It is main to be in response to the operation that user is selected as video of broadcasting TV programs by satellite to be sent and raw
At control instruction and it is sent to video pre-filtering forwarding module 2.Here control instruction information includes mainly:Broadcast TV programs by satellite the IP of video
Address, port numbers, destination address, the destination slogan etc. that satellite communication video is sent.
Video acquisition Terminal Control Element 13:It is mainly used for that the parameter of video acquisition terminal 4 is arranged, as video acquisition is differentiated
Rate, coding transmission rate etc..
State receives and display unit 14:Receive and show video pre-filtering forwarding module 2 and video acquisition terminal (including
Cable video acquisition terminal 5 and wireless video collecting terminal 6) state.
In addition, video dispatching terminal 1 can also be auxiliary for the video for video of broadcasting TV programs by satellite to being elected to be by video push scheduling unit 12
Line flag is flowed into, and the video answered therewith is checked by pre-processing the communication protocol between forwarding module 2 and video dispatching terminal 1
The push state of mainstream is provided that in embodiment and reports its working condition at interval of 200ms video pre-filterings forwarding module 2
To video dispatching terminal 1.There are many kinds of the modes of label, using in video upper ends words identification and figure in embodiment
Mark.Wherein, word includes title (being corresponded with IP address), the resolution ratio of the corresponding acquisition terminal of video;Mark includes to push away
Serve starlike state, object identification state (what is done in embodiment is recognition of face, finds that after target person mark can be lighted).Video
Pretreatment forwarding module 2 is connected by its network communication interface with video dispatching terminal 1, and control instruction (as shown in Figure 2) is received.
Video pre-filtering forwarding module 2 is connected by its network communication interface with wireless transport module 3, and wireless video collecting terminal is received
6 media data (as shown in Figure 1).Video pre-filtering forwarding module 2 is acquired eventually by its network communication interface and cable video
End 4 is connected, and receives the media data (as shown in Figure 1) of cable video acquisition terminal 5.
Preprocessing function include mainly to the media data that receives carry out identity validation (confirm whether IP address legal,
Whether it is correct address) and header modification is carried out to acknowledged media data.The media data received includes mainly
Local video acquisition terminal is collected and the local video for the video that is appointed as broadcasting TV programs by satellite and the opposite end that is received by satellite channel
Video.It can just be forwarded after the media data that receives is preprocessed, pretreated local video is transmitted to opposite end, pre- to locate
Opposite end video after reason is transmitted to local video playback terminal and plays out.
Wireless transport module 3 is the equipment that can be wirelessly transferred between wireless video collecting terminal 6.The present invention's
Wireless transport module 3 and wireless video collecting terminal 6 are based on dynamic MESH self-organizing networks, can dynamically be established under mobile status
Optimization route has networking flexibility, dynamic routing, non-stop layer, high reliability.
In conjunction with shown in Fig. 3, video playing terminal 4 can be used with support 720P or more resolution videos decoding playing function
Equipment, for play video pre-filtering forwarding module 2 transmission media data.
Cable video acquisition terminal 5 is the equipment for including the functions such as video acquisition, coding, is connected to and is regarded by network interface
Frequency pretreatment forwarding module 2.Video acquisition can export digital HDMI high-definition signals using high-definition camera.
Wireless video collecting terminal 6 is to include the equipment of the functions such as video acquisition, coding, is connected to regards by radio communication
Frequency preprocessing module 2.Wireless acquisition terminal 6 carries out video acquisition using high-definition digital camera, can extend to 16 according to demand
Road, and automatic transfer can be carried out, practical distance is up to 5 kilometers.
In embodiment, cable video acquisition terminal 5 and wireless video collecting terminal 6 are all made of H.265 efficient video coding
Technology can encode out video high definition mainstream and the smaller secondary flow of bandwidth occupancy so that the Internet video of output is defended limited simultaneously
The wide lower transmission higher quality of star braid.Partial parameters can be set by video acquisition Terminal Control Element 14 in video acquisition terminal
It sets, for example, video acquisition resolution ratio, coding transmission rate etc..
Based on above system, the present invention with difference lies in need not regard video dispatching to what is received in the prior art
Frequency is stored, and it is all real-time to handle and forward, and the propagation delay time is the important indicator of the present invention, can be carried out
Real-time video call.And what is be all made of in the prior art to two video dispatchings inquired is that shape is reviewed or downloaded to video
Formula cannot achieve real-time Communication for Power.Certainly, video scheduling system of the invention can also integrated video download, store and review work(
Can, for example, the video locally acquired and Correspondent Node video can be stored, for regarding by connecting network hard disc CD writer (NVR)
Frequency is downloaded, stores and is played back.
In conjunction with shown in Fig. 4 and Fig. 5, above-mentioned video scheduling system is used for the application method of satellite video bidirectional real-time
It is as follows:
As shown in figure 4, each road video acquisition terminal (including local cable video acquisition terminal and local wireless video acquisition
Terminal) acquisition vision signal, and collected vision signal is encoded, the video main stream after coding is sent to video preprocessor
Video secondary flow after coding is sent to local video dispatch terminal by processing forward module.Wherein, cable video acquisition terminal is real
When acquisition local video and encoded, wherein for high definition mainstream by network transmission to video pre-filtering forwarding module 2, secondary flow is logical
It crosses network transmission and gives video dispatching terminal.Three road wireless video collecting terminals can acquire a certain range of video in periphery simultaneously
And encoded, high definition mainstream is transmitted to by video pre-filtering forwarding module by wireless transport module, secondary flow is transmitted to and is regarded
Frequency dispatch terminal.
The secondary flow data of each road video of local video dispatch terminal real-time reception, and can be decoded by video decoding software
Supervise each road video.In embodiment, the initial video of broadcasting TV programs by satellite that video scheduling system is arranged is that cable video acquisition terminal collects
Video, i.e., by dispatcher software be arranged equipment be just switched on when state, usually acquiescence push video of broadcasting TV programs by satellite be cable video
The collected video of acquisition terminal, naturally it is also possible to voluntarily be selected by operator.Operator is supervised in real time by video dispatching terminal
The roads Kan Ge video state carries out satellite communication, for example, wireless video (IP as video of broadcasting TV programs by satellite all the way if therefrom selected:
192.168.1.167), then video dispatching terminal will generate corresponding control instruction, it is then sent to local video and locates in advance
Manage forwarding module.At this point, video of the display in push state is wireless acquisition terminal video (IP in video dispatching terminal:
192.168.1.167) collected video.
Local video pre-processes the control instruction that forwarding module real-time reception local video dispatch terminal is sent, and foundation is broadcast TV programs by satellite
The IP address and port numbers of video judge whether received media data is purpose media data, i.e., it is true to carry out identity to it
Recognize.When multiple equipment carries out mutual group-net communication, the IP address and port numbers of each equipment are unique, media datas herein
Using standard network UDP format, header includes:Source IP address, source port number, purpose IP address, destination slogan.If depending on
Frequency pretreatment forwarding module judgement data are purpose media data, then change the header of media data, wherein source address and source
Slogan (IP address and port numbers of local video acquisition terminal), which is revised as the machine (i.e. the video scheduling system of local side), to be defended
IP address in star communication and port numbers (i.e. the machine mailing address);(local video pre-processes for destination address and destination port number
The IP address and port numbers of forwarding module) it is revised as the IP address and port numbers (i.e. opposite end mailing address) of satellite communication opposite end.
Video main stream in modified video media-data of broadcasting TV programs by satellite is sent to satellite channel and sent by video pre-filtering forwarding module to be delayed
Rush area.It should be noted that " the machine " here is for opposite end, in satellite communication, all satellite communications are set
Standby (i.e. video scheduling system) all there are one unique the machine addresses in satellite network, are the mailing addresses between communication ends;And
The address of each terminal or module is home address inside video scheduling system.It should be strongly noted that internal network and communication
Network is two mutually isolated networks, passes through the self-defined mapping gateway of video pre-filtering forwarding module.Home address
Mapping relations between mailing address are determined by the control instruction pushed, and the exchange of audio, video data is only carried out between them.
As shown in figure 5, local video pre-processes the forwarding module media data that also real-time reception opposite end sends over, confirm
It is pre-processed after identity, is then forwarded to local video playback terminal and carries out HD video broadcasting.Specifically, opposite end is by defending
Star channel sends media data, after pretreatment forwarding module receives media data, according to messaging parameter (IP address and port
Number) authentication is carried out to media data, judge whether it is the video data from opposite end, then to acknowledged media number
According to header do following processing:Source address and source port number (peer IP address and port numbers) are revised as pretreatment in the machine to turn
The IP address and port numbers for sending out module, the video of the machine is revised as by destination address and port numbers (local IP address and port numbers)
The IP address and port numbers of playback terminal, then pretreated media data be sent to video playing terminal and play out.It needs
It is noted that the present invention can send communication ginseng in link setup communication process using satellite equipment to video pre-filtering forwarding module
Number instruction, the instruction include the mailing address of the mailing address and opposite end satellite equipment sending destination of Correspondent Node satellite equipment
Etc. information.
The media data that local video playback terminal sends local video pretreatment forwarding module is decoded, and in real time
It plays.
Similarly, video pre-filtering forwarding module in opposite end also receives the media in buffering area reading satellite communication from satellite channel
Data, and send the video of broadcasting TV programs by satellite that opposite end is chosen and pushed.Since the both ends satellite communication equipment of real-time Communication for Power here is equal
Using video scheduling system of the present invention, therefore, both ends processing mode is similar, and details are not described herein again.
It should be noted that video playing terminal usually only plays the video that opposite end is sent, but without satellite communication
When, i.e., when no opposite end, an only equipment, what it is due to the viewing of video dispatching terminal is secondary flow, and clarity is not high, can be with
Video main stream is pushed to video playing terminal to be watched.
This shunting processing proposed through the invention, it is synchronous that real-time secondary flow, which supervises function, and delay is not present, there are no
It need to be supervised by playing back;And since video dispatching terminal only receives auxiliary streaming video, without handling mainstream, reduce at its data
Reason amount reduces the requirement to hardware device, greatly reduces equipment cost.
The data transfer mode that case of the present invention uses has:Cable-network transmission, wireless self-networking transmit two kinds, certainly originally
The technical transmissions audio, video data such as optical fiber, WLAN, bluetooth, microwave, ZigBee, LTE, 4G can also be used in invention.
The data mode that the present invention uses is UDP message, using datagram header as mark, naturally it is also possible to use its number
According to mode, such as TCP/IP.Media data can certainly be packaged into stream media format, such as use RTP, RTMP communication protocols
View, can preferably ensure the real-time and fluency of video communication.
As seen from the above technical solution, the present invention provides a kind of video scheduling system suitable for satellite communication and sides
Method has been saved satellite channel resource, has been realized efficient according to the actual needs of user by screening media data in advance
Video communication.The present invention uses the communication mode of full IPization, has the characteristics that deployment is flexible, setting is simple, flexibility and reliability, also sharp
It is blended in a variety of transmission modes.
Although embodiment of the present invention is described above in association with attached drawing, the invention is not limited in above-mentioned
Specific embodiments and applications field, above-mentioned specific embodiment are only schematical, directiveness, rather than restricted
's.Those skilled in the art under the enlightenment of this specification, in the range for not departing from the claims in the present invention and being protected
In the case of, a variety of forms can also be made, these belong to the row of protection of the invention.
Claims (10)
1. a kind of video scheduling system suitable for satellite communication, which is characterized in that including video dispatching terminal, video pre-filtering
Forwarding module, video playing terminal and multi-channel video capturing terminal, wherein:
Video acquisition terminal acquires vision signal, and is encoded to collected video media-data, by the video after coding
Mainstream is sent to the video pre-filtering forwarding module being attached thereto, and the video secondary flow after coding is sent to the video being attached thereto
Dispatch terminal;
Video dispatching terminal, response user are selected as the operation of video of broadcasting TV programs by satellite to be sent, generate corresponding control instruction simultaneously
It is sent to the video pre-filtering forwarding module being attached thereto;Receive the video secondary flow that each road video acquisition terminal is sent and to its into
Row decoding plays, to realize the real-time supervision to multi-channel video secondary flow;
Video pre-filtering forwarding module, what the control instruction and multi-channel video capturing terminal that reception video dispatching terminal is sent out were sent
Video main stream judges whether the video main stream that receives is the video main stream of video of broadcasting TV programs by satellite according to control instruction, and to being confirmed as
The video main stream of video of broadcasting TV programs by satellite is pre-processed, and then sends it to opposite end by satellite channel again;It receives and believes from satellite
The media data in road, and identity validation is carried out to it according to the messaging parameter instruction received in link setup communication process, if confirming
The video playing terminal being attached thereto is forwarded to after then being pre-processed to it for opposite end video main stream again;
Video playing terminal receives the video main stream that video pre-filtering forwarding module is sent, and is decoded broadcasting to it.
2. video scheduling system as described in claim 1, which is characterized in that video media-data uses UDP or TCP/IP numbers
According to format, using in video media-data source address and destination address as its identity.
3. video scheduling system as claimed in claim 2, which is characterized in that video media-data uses UDP message format,
UDP message header includes source address and destination address;Control instruction information includes the source address as video of broadcasting TV programs by satellite to be sent
And the opposite end mailing address as video sending destination of broadcasting TV programs by satellite;Messaging parameter instruction is comprising opposite end video in satellite communication
Mailing address and opposite end video sending destination mailing address;
Video pre-filtering forwarding module judges that the video acquisition terminal is sent according to the source address for video of broadcasting TV programs by satellite in control instruction
Video main stream whether be the video main stream of video of broadcasting TV programs by satellite, the pretreatment to the video main stream for video of being confirmed as broadcasting TV programs by satellite refers to upper
The header of star video main stream is modified as follows:It is mailing address of the machine in satellite communication by source address modification, by target
It is revised as opposite end mailing address in control instruction in location;
Video pre-filtering forwarding module is according to the mailing address in messaging parameter instruction to the media that are received by satellite channel
Data carry out identity validation, and the pretreatment to being confirmed as opposite end video main stream refers to being repaiied as follows to the header work of opposite end video main stream
Change:By the address for the video pre-filtering forwarding module that source address modification is internal system, destination address is revised as internal system
Video playing terminal address.
4. video scheduling system as described in claim 1, which is characterized in that being packaged into media data based on communication protocol
Stream media format.
5. video scheduling system as described in claim 1, which is characterized in that video dispatching terminal-pair broadcast TV programs by satellite video video it is auxiliary
Line flag is flowed into, the video master for video of broadcasting TV programs by satellite is checked by pre-processing the communication protocol between forwarding module and video dispatching terminal
The push state of stream.
6. video scheduling system as described in claim 1, which is characterized in that video acquisition terminal includes that wired video acquisition is whole
End and wireless video collecting terminal, wherein:
Cable video acquisition terminal, and video pre-filtering forwarding module wired connection, configured with for acquiring regarding for vision signal
Frequency collecting unit and coding unit for being encoded to collected vision signal;
Wireless video collecting terminal is wirelessly connected with video pre-filtering forwarding module, configured with for acquiring regarding for vision signal
Frequency collecting unit and coding unit for being encoded to collected vision signal.
7. video scheduling system as claimed in claim 6, which is characterized in that video acquisition unit is with digital HDMI high definitions
The high-definition camera of signal output function;Video encoding unit is using H.265 efficient video coding technique, for realizing video height
The coding of clear mainstream and secondary flow.
8. video scheduling system as claimed in claim 6, which is characterized in that video scheduling system further includes wireless transmission mould
Block, wireless video collecting terminal are wirelessly connected by wireless transport module and video pre-filtering forwarding module, wireless transport module
It is based on dynamic MESH self-organizing networks with wireless video collecting terminal.
9. video scheduling system as described in claim 1, which is characterized in that further include video storage modules, regarded for storing
The video main stream that frequency pretreatment forwarding module is sent.
10. a kind of video dispatching method suitable for satellite communication passes through the first video scheduling system and the second video dispatching system
System realizes the bidirectional real-time of satellite video, which is characterized in that the first video scheduling system and the second video scheduling system are equal
With the feature as described in claim 1 to 9 any one;
First video acquisition terminal of the first video scheduling system acquires vision signal, and to collected video media-data into
Video main stream after coding, is sent to the first video pre-filtering forwarding module being attached thereto, by regarding after coding by row coding
Frequency secondary flow is sent to the first video dispatching terminal being attached thereto;
First video dispatching terminal response user of the first video scheduling system chooses the operation as video of broadcasting TV programs by satellite to be sent,
It generates corresponding control instruction and is sent to the first video pre-filtering forwarding module being attached thereto;
First video pre-filtering forwarding module of the first video scheduling system receives the control that the first video dispatching terminal is sent out and refers to
The video main stream that the roads Ling Hege the first video acquisition terminals is sent, according to control instruction judge the video main stream received whether be
It broadcasts TV programs by satellite the video main stream of video, and the video main stream for video of being confirmed as broadcasting TV programs by satellite is pre-processed, then passing through satellite channel will
It is sent to the second video scheduling system;First video pre-filtering forwarding module by satellite channel receiving media data, according to
The messaging parameter instruction received in link setup communication process carries out identity validation to the media data that receives, and to being confirmed as pair
The video main stream of end video is pre-processed, then pretreated media data is sent to the first video being attached thereto again
Playback terminal;
First video playing terminal of the first video scheduling system receives the first video pre-filtering forwarding module hair being attached thereto
The opposite end video main stream sent, and broadcasting is decoded to it.
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