CN104410869A - Cloud broadcasting system, mixed broadcasting system and cloud broadcasting method - Google Patents
Cloud broadcasting system, mixed broadcasting system and cloud broadcasting method Download PDFInfo
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- CN104410869A CN104410869A CN201410670757.1A CN201410670757A CN104410869A CN 104410869 A CN104410869 A CN 104410869A CN 201410670757 A CN201410670757 A CN 201410670757A CN 104410869 A CN104410869 A CN 104410869A
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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
- H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
- H04N21/23614—Multiplexing of additional data and video streams
-
- 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]
- H04N21/40—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
- H04N21/4344—Remultiplexing of multiplex streams, e.g. by modifying time stamps or remapping the packet identifiers
-
- 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
- H04N21/65—Transmission of management data between client and server
- H04N21/658—Transmission by the client directed to the server
- H04N21/6587—Control parameters, e.g. trick play commands, viewpoint selection
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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 discloses a cloud broadcasting system, a mixed broadcasting system and a cloud broadcasting method. The cloud broadcasting system comprises a local broadcasting control system, a material server and a cloud server, wherein the local broadcasting control device is used for controlling pushing programs and program materials; the material server is used for providing the program materials to be broadcasted; the cloud server is connected with the local broadcasting device and the material server, receives the pushed programs and the program materials and sends program materials to a designated position after processing the program materials. According to the cloud broadcasting method, the programs and the program materials are pushed to the cloud server from the local; the cloud server processes the received program materials to a TS (transport stream); and the TS is sent to the designated place. The cloud broadcasting system, the mixed broadcasting system and the cloud broadcasting method have improvements in aspects of construction cost, cycle, operation maintenance, upgrade, safety and the like, conveniently achieve heterogeneous and remote broadcasting which can be achieved basically through machine rooms with the Internet and necessary video equipment.
Description
Technical field
The present invention relates to radio and television playing control system technical field, specifically, relate to cloud broadcast system, mixing broadcast system and cloud broadcasting method.
Background technology
The current broadcast system of TV station generally includes and locally broadcasts control device and video server.Wherein, the material for all kinds of video frequency programs broadcasted is had in video server.Broadcast in controller and have the broadcast items list (also claiming job order) edited, have the ID of broadcast items in programme, the information such as airtime, and the ID in programme is corresponding with the program in video server.Broadcast the decoding channels that controller controls video server according to this program ID, just can broadcast scheduled program in the scheduled time.
In order to broadcast safety, TV station generally adopts carrying out safety backup measure, as shown in Figure 1, is active and standby two cover broadcast system schematic diagrames.Main broadcaster goes out controller 101 and is connected with main video server 102, the standby controller 201 that broadcasts is connected with standby video server 202, the output of active and standby video server 102 and 202 is connected to signal switching apparatus 50, by control signal switching device 50, the decoded signal that a road video server exports the most at last outwards transmits.By network exchange data between active and standby broadcast controller 101 and 201, and be consistent.Active and standby video server 102 and 202 generally has same video frequency program.
In the present system, when the primary decoded signal that main video server 102 exports is out of order, by signal switching apparatus 50, standby decoded signal is switched in final output, thus realize the uninterrupted outwards transmission of decoded signal.Main broadcaster go out controller 101 go wrong time, the standby controller 201 that broadcasts obtains control, serves as the role that main broadcaster goes out controller 101, controls standby video server 202 and exports standby decoded signal.Decoded signal with broadcast switching of controller and generally synchronously carry out.
For strengthening security mechanism, for important channel, also has more carrying out safety backup mechanism.
Such as, adopt the 3rd for broadcasting, configuration the 3rd is standby broadcasts controller and the 3rd standby video server broadcast.Principle is consistent with active and standby broadcast recited above, and the 3rd standby decoded signal broadcasting output is also input to signal switching apparatus, selective output.3rd standby broadcasting can be cold standby or hot standby.So-called cold standby, namely refers to not start this cover system at ordinary times, only when main or standby system goes wrong, takes over the system gone wrong, forms new active and standby broadcast system.So-called hot standby, namely refer to start with main preparation system simultaneously, formed active and standby, two to broadcast for three covers are common, first signal switching apparatus selects the signal of main broadcast system to cut out, when the signal of main broadcast system is problematic, select the signal of standby broadcast system, active and standby all problematic time, select the 3rd for the signal of broadcast system.
The security mechanism that TV station uses, except back mechanism, also has the mode of pad.Namely the decoding channels that employing one is special is for broadcasting propaganda film or some column sheets of platform, and broadcasting signal is input to the signal switching apparatus 50 shown in Fig. 1, as an alternative input source in road.When other back mechanisms are all inoperative, broadcast this signal.At this moment, the original broadcast task of TV station is actual is stopped, broadcast be interim signal.
Before pad, some TV station also adopts more security mechanism, and such as video tape recorder is standby to be broadcast.Prepare video tape and video tape recorder at any time, select vcr signal to broadcast when being necessary.Some even adopts the 4th standby to broadcast, the 5th standbyly to broadcast, and principle is basically identical.For broadcasting the requirement that some has isomery (computer adopts different operating system), certain defense reaction can be had to virus attack etc.
At present, management organization proposes further requirement to standby broadcasting, and for preventing accident, disaster etc., requiring that strange land is standby and broadcasting, namely requiring for broadcasting channel in different places.
Build independent broadcast channel, need video server, storage, control machine, video and audio professional equipment and cable etc., drop into larger.Broadcast if strange land is standby, also need to rent the supports such as machine room.The task in strange land is also cumbersome, from personnel to equipment control, all there is difficult point.
Summary of the invention
The technical problem to be solved in the present invention is, proposes cloud broadcast system, mixing broadcast system and cloud broadcasting method, utilizes cloud, realize the broadcast of broadcast TV program, thus reduce the input of TV and Radio Service, and increase work efficiency.
For solving the problems of the technologies described above, according to an aspect of the present invention, a kind of cloud broadcast system being provided, wherein, comprising: local broadcast control device, for the broadcast of the propelling movement and program that control programme and program material; Material server, broadcasts control device with described this locality and is connected, and provides program material to be broadcasted for the request of broadcasting control device according to described this locality; Cloud Server, broadcasts control device with described this locality and is connected with described material server, receives the programme and program material that push, and is sent to assigned address by after described program material process.
Preferably, described cloud broadcast system also comprises local SDI decoder module and local signal switching device shifter, and wherein, local SDI decoder module is used for converting the program material that described Cloud Server sends to sdi signal.
Preferably, in described cloud broadcast system, described this locality is broadcasted control device and is comprised programme pushing module, for pushing programme to described Cloud Server; Described material server comprises program material pushing module, broadcasts control device with described this locality, broadcasts the instruction of control device, push program material to described Cloud Server according to described this locality.
Preferably, in described cloud broadcast system, described this locality is broadcasted control device and is comprised data-pushing module, and programme and the program material that obtains from described material server are pushed to described Cloud Server.
Preferably, in described cloud broadcast system, described this locality is broadcasted control device and is comprised transcoding module, for the program material obtained from described material server is carried out format conversion, the program material after conversion is sent to described data-pushing module.
Preferably, in described cloud broadcast system, described cloud server comprises: material receiver module, broadcasts programme and the program material of control device propelling movement for receiving described this locality; And data processing module, be sent to assigned address for program material to be broadcasted is processed into TS stream.
Preferably, in described cloud broadcast system, described data processing module comprises transcoding module and cloud and broadcasts module, and the form of described transcoding module to described program material is changed, and described cloud broadcasts module and the program material after carrying out format conversion is processed into TS stream exports.
According to a second aspect of the invention, a kind of mixing broadcast system is provided, comprise main broadcaster's system, standby broadcast system, pad broadcast system and local signal switching device shifter, wherein, in above-mentioned first aspect, arbitrary cloud broadcast system is as at least one in main broadcaster's system, standby broadcast system and pad broadcast system, and described local signal switching device shifter selects one of sdi signal of main broadcaster's system, standby broadcast system and pad broadcast system as broadcasting signal.
Preferably, described mixing broadcast system also comprises emergency system, and described local signal switching device shifter selects one of sdi signal of main broadcaster's system, standby broadcast system, pad broadcast system and emergency system as broadcasting signal.
According to a third aspect of the invention we, provide a kind of cloud broadcasting method, wherein, programme and program material are pushed to Cloud Server from this locality; The program material received is processed into TS stream by described cloud server; Described TS stream is sent to assigned address.
Preferably, in described broadcasting method, before described program material is pushed to Cloud Server from this locality, broadcasts in control device in this locality and format conversion is carried out to described program material, be converted to from server proprietary formats the form that software can decode.
Preferably, in described broadcasting method, before the program material received is processed into TS stream by described cloud server, checks the form of the described program material received whether to meet the requirements, if undesirable, then carry out format conversion.
Preferably, in described broadcasting method, described assigned address is assigned ip address.
Preferably, in described broadcasting method, described assigned address is local, after described TS stream is sent to this locality, described TS stream is decoded as sdi signal.
The present invention adopts publicly-owned cloud (or privately owned cloud) to build broadcast system, and this system as independently main broadcast system, also as standby broadcast system or shim system, can also can be used alone as the IPTV broadcast system of TV station.
The present invention's relative existing system in construction cost, construction period, operation maintenance, upgrading, safety etc. all improves a lot.And for standby broadcast system, conveniently realize isomery and broadcast, strange land is broadcasted.Require very low to operating personnel position, the machine room substantially possessing network condition and necessary video equipment can complete.
Accompanying drawing explanation
By referring to the description of accompanying drawing to the embodiment of the present invention, above-mentioned and other objects of the present invention, feature and advantage will be more clear, in the accompanying drawings:
Fig. 1 is the active and standby broadcast system schematic diagram of existing TV station;
Fig. 2 is the schematic block diagram of cloud broadcast system according to a first embodiment of the present invention;
Fig. 3 is the schematic block diagram of cloud broadcast system according to a second embodiment of the present invention;
Fig. 4 is the schematic block diagram of the example of cloud broadcast system according to a first embodiment of the present invention;
Fig. 5 is the schematic block diagram of the example of the Cloud Server used in cloud broadcast system of the present invention;
Fig. 6 is the flow chart according to cloud broadcasting method of the present invention;
Fig. 7 is the schematic block diagram according to mixing broadcast system of the present invention.
Embodiment
Hereinafter with reference to accompanying drawing, various embodiment of the present invention is described in more detail.In various figures, identical element adopts same or similar Reference numeral to represent.For the sake of clarity, the various piece in accompanying drawing is not drawn in proportion.
As shown in Figure 2, be the schematic block diagram of cloud broadcast system according to a first embodiment of the present invention.Cloud broadcast system provided by the invention comprises local broadcast control device 10, material server 20 and Cloud Server 30.Described this locality broadcasts control device 10 and material server 20 is positioned at TV station, and the two is connected by local network.Preferably, material server 20 also can be positioned at high in the clouds.Cloud Server 30 is a certain publicly-owned cloud or privately owned cloud, such as Ali's cloud.The local control device 10 that broadcasts is connected by network with Cloud Server 30 respectively with material server 20.Usually, safe, unimpeded in order to ensure that program broadcasts, by network private line access.Local broadcast the broadcast of control device 10 for the propelling movement and program that control programme and program material, described material server 20 pushes program material to be broadcasted for providing to Cloud Server 30.
Cloud broadcast system is according to a first embodiment of the present invention as IPTV broadcast system, and the broadcast items list that local broadcast control device 10 pushes in Cloud Server 30 is IPTV broadcast items list, and material is IPTV broadcast material.The packing of each program material is generated TS stream according to the order of programme by Cloud Server 30, and order is pushed to assigned ip address, namely completes broadcast work.
As shown in Figure 3, be the schematic block diagram of cloud broadcast system according to a second embodiment of the present invention.Identical with the cloud broadcast system according to the first embodiment, comprise local broadcast control device 10, material server 20 and Cloud Server 30 according to the cloud broadcast system of the second embodiment.The difference of the cloud broadcast system according to the second embodiment is below only described.This cloud broadcast system also comprises local SDI decoder module 40.
Local SDI decoder module 40 in the present invention can be arranged in TV station, also can be that any one has the machine room of broadcast ability.Therefore, the present invention realizing strange land for broadcasting simultaneously, can not increase more management and equipment, while solving existing demand, avoiding the drawback of prior art yet.
Cloud broadcast system is according to a second embodiment of the present invention as cable TV broadcast system.Local SDI decoder module 40 is connected by network with Cloud Server 30, receives the TS stream that Cloud Server 30 sends, described TS stream is decoded into sdi signal, and one as program is broadcasted source.
Fig. 4 is the schematic block diagram of the example of cloud broadcast system according to a first embodiment of the present invention.Described this locality is broadcasted control device 10 and is comprised programme pushing module 11 and local Broadcast Control module 12.Described programme pushing module 11 pushes programme according to the instruction of described local Broadcast Control module 12 to described Cloud Server 30, and described local Broadcast Control module 12 carries out the process control of broadcasting, and comprises acquisition programme, controls the propelling movement of programme; Communicate with material server 20, control the propelling movement of program material; Carry out real time communication with Cloud Server 30, exchange various control information with Cloud Server 30, and monitor broadcast process to obtain various state informations etc.
Material server 20 comprises server control module 21, program material pushing module 23 and materials database 22.Described server control module 21 is broadcasted control device 10 with described this locality and is communicated, according to the instruction that described local Broadcast Control module 12 sends, from materials database 22, transfer corresponding program material, control program material pushing module 23 and push program material to Cloud Server 30.
Described Cloud Server 30 comprises: cloud Broadcast Control module 31, cloud material receiver module 32, and cloud material memory module 33, transcoding module 34 and cloud broadcast module 35.Wherein, control device 10 and material server 20 real time communication are broadcasted in described cloud Broadcast Control module 31 and described this locality, receive described programme pushing module 11 and push the programme of coming, and with this locality Broadcast Control module 12 real time communication, exchange broadcast control information etc.Cloud material receiver module 32 program receiving material pushing module 23 pushes the data of coming, and is stored in cloud material memory module 33.The instruction that cloud Broadcast Control module 31 sends according to programme and the local Broadcast Control module 12 that receives, determine the program that will broadcast, the program material that will broadcast is sent to transcoding module 34, by program material from extended formatting, as original server proprietary formats MXF, GXF etc., convert to and can broadcast proprietary formats (as MPEG2, H.264 etc.) in high in the clouds.Then, described cloud broadcasts module 35 and the program material after transcoding is packaged into TS (Transport Steams is called for short TS) stream according to programme order, outputs to assigned address, the channel IP address of such as specifying or the receiving system of specifying.
In the present embodiment, being provided with program material pushing module 23 at material server 20, for being pushed directly in Cloud Server by program material, thus decreasing the local workload broadcasting control device 10.In this embodiment, the content of material server 20 can via wide-area network access.
In an alternative embodiment, control device 10 setting data pushing module can being broadcasted in this locality, for pushing programme and program material, thus not needing to arrange program material pushing module 23 in material server.Broadcast control device 10 due to this locality to be connected in the home network with material server 20, then broadcast control device 10 via this locality and push programme and program material to wide area network, therefore can improve the content security of material server 20.
In the embodiment that another substitutes, the local control device 10 that broadcasts can comprise transcoding module, program material for obtaining from described materials database carries out format conversion, program material after conversion is sent to described data-pushing module, thus does not need to arrange transcoding module 34 in Cloud Server 30.In the embodiment that this substitutes, local broadcast after program material is carried out format conversion by control device 10 is sent to Cloud Server 30, thus can alleviate data process load and the time delay of Cloud Server 30, meets the requirement of real-time broadcasted.
Fig. 5 is the schematic block diagram of the example of the Cloud Server 30 used in cloud broadcast system of the present invention.Beyond the clouds, Cloud Server 30 may be used for broadcast channel, also may be used for broadcasting multiple channel.As shown in Figure 5, the Cloud Server 30 for broadcasting multiple channel includes multiple transcoding module 34a-34c, and multiple cloud broadcasts module 35a-35c.The program material of each transcoding module to a channel enters format conversion, then broadcasts module by the cloud of correspondence and carries out transferring out after packing processes.Thus, TV station can use high in the clouds broadcasting for broadcasting or padding as multiple channel.
Based on above-mentioned broadcast system, the flow process of cloud broadcasting method provided by the invention as shown in Figure 6:
In step S01, by programme and program material from this locality through network push to Cloud Server.It should be noted that, for the program material that broadcasts and programme can timesharing, point be pushed to Cloud Server.To this increase the flexibility of native system.
In step S02, this programme of cloud server and material, and preserve the programme and material that receive beyond the clouds.
In step S03, whether Cloud Server checks the form of this material to meet the requirements.Such as, if the form of this material is the form that the server proprietary formats such as MXF, GXF or other non-high in the clouds are broadcasted, MPEG2, H.264 (only illustrate at this, the form that high in the clouds is broadcasted can be determined according to concrete condition), then perform step S04.As no, then perform step S05.
In step S04, carry out format conversion, become to meet the form broadcasted in high in the clouds by the format conversion of described material, as MPEG2, H.264.In the present embodiment, be deployed in Cloud Server by transcoding module, can utilize the powerful calculating ability of cloud, efficiency is higher.Then step S05 is performed.
In step S05, the data after transcoding are packaged into TS according to programme order and flow and output to assigned address.
Fig. 7 is the schematic block diagram according to mixing broadcast system of the present invention.Within the system, have four cover broadcast systems, main broadcaster's system 100, standby broadcast system 200, pad broadcast system 300 and emergency system 400.The output signal of this four covers broadcast system is all connected to signal switching apparatus 50.In the present system, system provided by the invention, can certainly as standby broadcast system, even main broadcaster's system as pad broadcast system 300.Because main broadcaster's system, standby broadcast system and emergency system apply traditional broadcast system, so do not repeat them here.
According to embodiments of the invention as described above, these embodiments do not have all details of detailed descriptionthe, do not limit the specific embodiment that this invention is only described yet.Obviously, according to above description, can make many modifications and variations.This specification is chosen and is specifically described these embodiments, is to explain principle of the present invention and practical application better, thus makes art technical staff that the present invention and the amendment on basis of the present invention can be utilized well to use.The scope that protection scope of the present invention should define with the claims in the present invention is as the criterion.
Claims (10)
1. a cloud broadcast system, wherein, comprising:
Local broadcast control device, for the broadcast of the propelling movement and program that control programme and program material;
Material server, broadcasts control device with described this locality and is connected, and provides program material to be broadcasted for the request of broadcasting control device according to described this locality;
Cloud Server, broadcasts control device with described this locality and is connected with described material server, receives the programme and program material that push, and is sent to assigned address by after described program material process.
2. cloud broadcast system according to claim 1, wherein, also comprises local SDI decoder module, and wherein, local SDI decoder module is used for converting the program material that described Cloud Server sends to sdi signal.
3. cloud broadcast system according to claim 1 and 2, wherein, described this locality is broadcasted control device and is comprised programme pushing module, for pushing programme to described Cloud Server; Described material server comprises program material pushing module, broadcasts control device be connected with described this locality, broadcasts the instruction of control device, push program material to described Cloud Server according to described this locality; Or
Described this locality is broadcasted control device and is comprised data-pushing module, and programme and the program material that obtains from described material server are pushed to described Cloud Server; Wherein, described this locality is broadcasted control device and is comprised transcoding module, for the program material obtained from described material server is carried out format conversion, the program material after conversion is sent to described data-pushing module.
4. cloud broadcast system according to claim 1, wherein, described cloud server comprises:
Material receiver module, broadcasts programme and the program material of control device propelling movement for receiving described this locality; With
Data processing module, is sent to assigned address for program material to be broadcasted is processed into TS stream.
5. cloud broadcast system according to claim 4, wherein, described data processing module comprises transcoding module and cloud and broadcasts module, and the form of described transcoding module to described program material is changed, and described cloud broadcasts module and the program material after carrying out format conversion is processed into TS stream exports.
6. a mixing broadcast system, comprise main broadcaster's system, standby broadcast system, pad broadcast system and local signal switching device shifter, wherein cloud broadcast system according to any one of claim 1 to 7 is as at least one in main broadcaster's system, standby broadcast system and pad broadcast system, and described local signal switching device shifter selects one of sdi signal of main broadcaster's system, standby broadcast system and pad broadcast system as broadcasting signal;
Also comprise emergency system, described local signal switching device shifter selects one of sdi signal of main broadcaster's system, standby broadcast system, pad broadcast system and emergency system as broadcasting signal.
7. a cloud broadcasting method, wherein,
Programme and program material are pushed to Cloud Server from this locality;
The program material received is processed into TS stream by described cloud server;
Described TS stream is sent to assigned address.
8. cloud broadcasting method according to claim 7, wherein, before described program material is pushed to Cloud Server from this locality, broadcasts in control device in this locality and carries out format conversion to described program material.
9. cloud broadcasting method according to claim 7, wherein, before the program material received is processed into TS stream by described cloud server, checks the form of the described program material received whether to accord with requirement, if undesirable, then carries out format conversion.
10. cloud broadcasting method according to claim 7, wherein, described assigned address is assigned ip address; Or
Described assigned address is local, after described TS stream is sent to this locality, described TS stream is decoded as sdi signal.
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| CN201410670757.1A CN104410869B (en) | 2014-11-21 | 2014-11-21 | Cloud broadcast system, mixing broadcast system and cloud broadcasting method |
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| CN201410670757.1A CN104410869B (en) | 2014-11-21 | 2014-11-21 | Cloud broadcast system, mixing broadcast system and cloud broadcasting method |
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| CN109246333A (en) * | 2018-09-19 | 2019-01-18 | 北京正奇联讯科技有限公司 | The control method and device of video playing |
| CN110958403A (en) * | 2019-12-18 | 2020-04-03 | 南京广播电视集团(南京广播电视台) | Remote safe backup broadcasting system constructed by utilizing 5G technology |
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| CN104410869B (en) | 2018-08-10 |
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