CN103369308B - OSD superposition management and superposition execution method and device - Google Patents
OSD superposition management and superposition execution method and device Download PDFInfo
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Abstract
The invention provides an OSD superposition management and superposition execution method and device. The OSD superposition management and superposition execution method and device are applied to management servers and transmit servers in a monitoring system. The management method includes the steps of sending a video data request to the video data original end direction to schedule video data from an original end to a pointed receiver, continuing to send a determination response to the request end direction after receiving a determination response corresponding to the video data request, and sending an OSD superposition control instruction to the pointed receiver after receiving the determination response and guaranteeing that the pointed receiver belongs to the domain, wherein the superposition control instruction carries OSD information corresponding to the video data and needing superposition, and the OSD information needing superposition at least comprises domain OSD information. Compared with the prior art, the OSD superposition management method and the execution method and device allow users to obtain more complete OSD information quickly and conveniently and have great significance for large-scale monitoring systems.
Description
Technical field
The present invention relates to technical field of video monitoring, more particularly to a kind of OSD superposition management, execution method and device.
Background technology
As smart city etc. monitors the popularization of application, IP monitoring is quickly being applied to industry-by-industry and public domain.
For control point, it may be managed by multiple different tissues.For each tissue, it draws to monitor video
OSD on face（On Screen Display, on-chip study）The demand of information is not quite similar.For example, from positioned at province
For the angle of the provincial user in level domain, it may want to show city, county, township's three-level osd information on video pictures.For position
For the city-level user in city-level domain, it may only want to show county, township's two-stage osd information.
In fact such demand also has many kinds, such as the video that the CCTV camera in supermarket is collected is drawn
Face, for supermarket itself use, it is a specific position that it may want to osd information, such as A areas southeast corner, and
For having permission using the department of the video camera, such as public security department, it may be it is desirable that XX supermarkets A areas southeast corner.Mesh
It is front for such demand, prior art generally needs the manual configuration for carrying out complexity to realize, for large-scale monitoring should
With for, such as safety engineering, such mode is undoubtedly difficult to what is be easily accepted by a user.
The content of the invention
In view of this, the present invention provides a kind of OSD and is superimposed managing device, is applied in the management server of monitoring system,
Wherein the monitoring system also includes forwarding server, video data source and video data request end, and the device includes：Request
Processing unit, response processing unit and OSD control units；Wherein：
Requesting processing, for when video data request is received from video data request end side, to video counts
Video data request is sent according to source direction to be scheduled to specify recipient from the video data of source；
Response processing unit, for receiving and the video data corresponding confirmation of request from video data source side
After response, continue to send confirmation response to request extreme direction；
OSD control units, for response processing unit receive confirmation response after and specify recipient belong to this domain when,
The instruction of OSD superposing controls is sent to the specified recipient；Wherein carry in the superposing control instruction corresponding with the video data
Needs superposition osd information, wherein this need be superimposed osd information at least include this domain osd information.
The present invention also provides a kind of OSD superpositions performs device, is applied on the forwarding server in monitoring system, wherein should
Monitoring system also includes management server, video data source and video data request end, and the device includes OSD recording units
And forwarding performance element；Wherein：
OSD recording units, for when the instruction of OSD superposing controls is received from management server, obtaining what is wherein carried
Need the osd information of superposition；
Forwarding performance element, for by the osd information insertion video data stream for needing superposition and then to request end side
Send.
The present invention also provides a kind of OSD superpositions management method, is applied in the management server of monitoring system, wherein the prison
Control system also includes forwarding server, video data source and video data request end, and the method is comprised the following steps：
Step A, from video data request end side receive video data ask when, to video data source extreme direction send out
Send video data request to be scheduled to specify recipient from the video data of source；
Step B, from video data source side receive it is corresponding with the video data request confirmation response after, continue
Send to request extreme direction and confirm response；
Step C, receive confirm response after and when specifying recipient to belong to this domain, send OSD to the specified recipient
Superposing control is instructed；Wherein the osd information for needing and being superimposed corresponding with the video data is carried in the superposing control instruction, its
In this need be superimposed osd information at least include this domain osd information.
Also a kind of OSD of the present invention is superimposed execution method, is applied on the forwarding server in monitoring system, wherein the monitoring
System also includes management server, video data source and video data request end, and the method includes：
Step I, from management server receive OSD superposing controls instruct when, acquisition wherein carry needs superposition
Osd information；
Send in step II, the osd information insertion video data stream for being superimposed needs and then to request end side.
In terms of existing technologies, the present invention can allow for user and efficiently and easily obtain more complete osd information,
It is notable for the meaning of large-scale monitoring system, and the transformation letter from for enforcement angle, to whole monitoring system relevant device
Single, implementation cost is low.
Description of the drawings
Fig. 1 is a kind of Organization Chart of typical multiple domain monitoring system.
Fig. 2 is the logical construction that OSD superposition managing devices and OSD are superimposed performs device in one embodiment of the present invention
And the schematic diagram of corresponding hardware environment.
Fig. 3 is the process chart that OSD is superimposed management method in one embodiment of the present invention.
Fig. 4 is the process chart that OSD is superimposed execution method in one embodiment of the present invention.
Fig. 5 is OSD superpositions management and the principle schematic for performing in one embodiment of the present invention.
Fig. 6 a are with the message structure schematic diagram for using RTP encapsulation in one embodiment of the present invention.
Fig. 6 b are osd information encapsulation format schematic diagrames under RTP encapsulation in one embodiment of the present invention.
Fig. 7 is with the message structure schematic diagram for using PS encapsulation in one embodiment of the present invention.
Fig. 8 is with the message structure schematic diagram for using TS encapsulation in one embodiment of the present invention.
Fig. 9 is the schematic diagram of osd information encapsulation format in one embodiment of the present invention.
Specific embodiment
At present large-scale monitoring system is usually multiple domain monitoring system, and each domain can be understood as a more small-scale monitoring
System, these less monitoring systems realize that interconnection forms large-scale monitoring system in service application aspect.Refer to Fig. 1, one
Domain 1, domain 2 are included in individual large-scale monitoring system until domain N.By taking domain 1 as an example, from business application for, one is matched somebody with somebody
Put and generally include by network connection management server together, playback server, storage server, turn than more complete domain
Send out server, headend equipment and rear end equipment.Headend equipment is typically a terminal with code capacity, such as network is taken the photograph
Camera IPC, video flowing can be encoded to the video data of suitable network transmission and then be gone out by network transmission by it；Rear end sets
Standby typically one terminal for possessing decoding capability, such as be provided with computer of decoding client software etc., and it will can connect
The video data for receiving is displayed on screen after being decoded.
Please continue to refer to Fig. 1, it generally has following purposes to the video data that headend equipment is produced, and one is to be presented in real time
On the screen of rear end equipment, normally referred to as live application；Another be by live video data storage in storage device with
It is standby to check later, normally referred to as playback application.From the point of view of the transmission of video data, playback application as live application,
Need video data transmission by network to rear end equipment, only video data be by playback server from storage device
Read.In fact, both applications are a kind of applications of networking, needs are carried out between at least two different equipment
Interaction, therefore for the participation device using two ends, its needs occupy middle command scheduling person.Usual management server
The role of this command scheduling can be served as.The essential of management server is the source from video data（Headend equipment is deposited
Storage equipment）The upper request end for video data（Usually rear end equipment）Schedule video data.
Due to backend terminal it is large number of, therefore in order to mitigate the pressure of central site network transmitting video data, many times
Forwarding server is there may also be in domain.Forwarding server is generally responsible for the video counts all the way from headend equipment or storage device
According to one or more rear end equipment is transmitted to, the presence of forwarding server is effectively reduced video data source and sends video counts
According to number, and the bandwidth pressure of these video datas of the network carrying can be reduced.Forwarding server can be from for realizing above
One physical server for being provided with corresponding software, it is also possible to which the network equipment is transformed by software and hardware（Such as switch or road
By device）And a server realized.
The present invention is intended to provide a kind of OSD is superimposed solution to solve the predicament that prior art is faced.Refer to Fig. 2
It is shown, it is implemented in software as a example by, in the solution, the present invention provide it is a kind of application on the management server OSD superposition
Managing device, and be engaged with the superposition managing device, apply the OSD on forwarding server to be superimposed performs device.Please
With reference to Fig. 2, the basic hardware environment of above-mentioned two plant running is there is shown, the present invention has no special wanting to hardware environment
Ask, the hardware structure of various appropriate servers can be adopted.Wherein OSD superpositions managing device includes：At requesting processing, response
Reason unit and OSD control units；OSD superpositions performs device includes：OSD recording units, forwarding judging unit and forwarding are held
Row unit.Fig. 3 is refer to, in two devices cooperation runnings following two corresponding handling processes are performed.
Step 101, requesting processing receives video data in management server from video data request end side please
When asking, to the source direction recipient of the video data request being scheduled to specify from the video data of source is sent；
Step 102, when management server receives confirmation response corresponding with the video data request from source side,
Response processing unit judges whether this domain has specified recipient, if it has, then going to step 104；If it is not, going to step 103
Process；
Step 103, response processing unit continues to send confirmation response to request extreme direction, and should in the confirmation for continuing to send
Answer this domain osd information in carrying；Go to step 104 process；
Whether step 104, carry his domain osd information in the confirmation response that response processing unit inspection is received, if
Have, obtain his the domain osd information and this domain osd information that carry in the confirmation response as needing to be superimposed osd information, turn step
Rapid 105 are processed；Otherwise this domain osd information is gone to step into 105 process as needing to be superimposed osd information；
Step 105, OSD control units are after management server receives confirmation response and specify recipient to belong to this domain
In the case of, send the instruction of OSD superposing controls to the recipient, and the video data identification and corresponding is carried in the instruction
Need to be superimposed osd information.
Step 201, when forwarding server receives OSD superposing controls and instructs from management server, OSD recording units are obtained
Take the corresponding relation that needing of wherein carrying both is superimposed osd information and corresponding video data identification and preserves；
Step 202, when forwarding server receives video data stream from source side, forwarding performance element is according to video
Data Identification determine it is corresponding need be superimposed osd information；
Step 203, forwards judging unit to determine the encapsulated type of current video data；
Step 204, forwards performance element to need superposition using corresponding insertion rule according to the encapsulated type for determining
Osd information is inserted in the video data stream, is then sent to request end side.
Fig. 3, Fig. 4 and Fig. 5 are please also refer to, is come below by way of the transmittance process of an exemplary live video data
Illustrate.Multiple domain monitoring system shown in Fig. 5 includes five domains of ABCDE, and there is corresponding management server in each domain
（ABCDE）, wherein domain B and domain D does not have forwarding server, and there is corresponding forwarding server in other three domains.Below in conjunction with
Above-mentioned flow process, illustrates by taking the transmitting procedure of live video data as an example.
Positioned at the rear end equipment of domain E, such as one computer equipped with decoding software, it can be asked as video data
Hold to management server E in this domain and initiate for the headend equipment in the A of domain as video data source（Such as IPC）Fact regard
Frequency request of data.Management server E is received can find requested IPC not in this domain after the request of this video data, then
Management server E may proceed to initiate video data request to subordinate domain D.Management server D in same reason domain D also can be sent out
Now not in this domain, it may proceed to initiate video data request to domain C the IPC.By that analogy, final video request of data can quilt
Management server A in the A of domain is received, and management server A can find that the IPC, in this domain, then can initiate video counts to the IPC
According to request.
It can be seen from the above that video data request is delivered to step by step on the IPC as source, each time
The message of video data request is likely to be changed in transmittance process.Because the management server in each domain can be in video
A specified recipient is carried in request of data.If request end is not or not this domain, so-called specified recipient is typically this domain and turns
Send out server.If this domain is without being designated recipient, such as without forwarding server while request end is not also in this domain,
The recipient in the higher level domain of request then can will be sent to this domain as specified recipient.If this domain does not have forwarding server,
But request end is in this domain, then request end can serve as specifying recipient.Once video data request is received by source, then regard
Frequency evidence can also send back the computer as request end from the IPC as source step by step.Certainly this process is existing
There is more detailed description in technology, the application is no longer repeated this.
Please continue to refer to Fig. 5, IPC is received after video data request, its can before video data is sent to this ask into
Row confirms response so that each follow-up specified recipient carries out reception and prepares.Confirm that response is also to transmit step by step.At this
In inventing preferred mode, for the process for confirming response is divided into two parts.In a kind of embodiment on basis, it is assumed that all
Domain have forwarding server, then the management server in this domain receive confirmation response when, to forwarding server send OSD superposition control
System instruction, can carry the osd information of superposition required for OSD superpositions performs device on forwarding server in this instruction.Forwarding clothes
Business device can save the osd information of this needs superposition after receiving.When video data by network transmission to forwarding clothes
During business device, this will be needed superposition osd information to be inserted in video data stream by OSD superpositions performs device.So-called video data
Stream is referred to and carries the message flow that the video data message is constituted, and from the point of view of session aspect, it can be five-tuple identical IP
Message flow.When the message for so carrying video data eventually arrives at request end, request end just can be regarded from message
Frequency according to this and corresponding osd information, then shows video and the OSD on screen.Can from this process
Go out, as long as there is operation OSD to be superimposed the specified recipient of performs device in a domain（Such as forwarding server or video data are asked
End）, then need the osd information of superposition just can together be transferred to video request end with video data.Arrive in video data stream
When up to request end, many osd informations may be had been inserted in video data stream, request end can just show one
Individual more abundant osd information.If also having run OSD superposition performs devices on video data request end certainly, then in exhibition
It can first carry out the overlap-add operation of osd information before showing.
In a schematic example, it is assumed that there is an IPC in Ji raft of pontoons supermarket, if certain of the Ministry of Public Security has authority
User needs the video data of the IPC, and it can ask the video data.IPC send video data when, first supermarket this
Osd information as " so-and-so supermarket southeast 2# " is superimposed with by OSD superpositions performs device in individual monitoring domain, in video data transmission
During the monitoring domain being located to the local local police station of the Ji raft of pontoons, it can be applied osd information as " Ji raft of pontoons northeast " again.Video
Data can be applied osd information as " Haidian District " again when area's level monitoring domain is reached, and next save as Beijing
Level monitoring domain, can be applied " Beijing " again.By that analogy, the user of the final Ministry of Public Security can be appreciated that a ratio is more complete
Osd information as osd information, such as " Haidian District, Beijing City Ji raft of pontoons northeast so-and-so supermarket southeast 2# ", this osd information can
To assist user that the position at IPC places is understood quickly, in the prior art, in the case of osd information is incomplete, may be only
Very limited amount of osd information can be obtained, such as is only capable of obtaining " so-and-so supermarket southeast 2# ", user cannot recognize it at all
In the urgent need to the information known.Certainly osd information is not limited to these information of geographical position, can also be that other miscellaneous services have
The information of needs, this depends entirely on the needs of monitoring business.
Please continue to refer to Fig. 5, in fact in multiple domains that primary video data transfer is passed through, some domain may
Without suitably specified recipient, such as without forwarding server or request end also not in this domain.Now with regard to nothing in the domain
Method deployment OSD superposition performs devices.The present invention provides a kind of scheme in preferred mode and carrys out perfect solution problem.In Fig. 5
Without the forwarding server that can implement OSD superposition performs devices in the B of domain, and request end is not also in this domain；This point management clothes
Business device B can be what is known.If wanting the osd information of domain B is also added in the message of video data, need additionally to be located
Reason.In preferred embodiment of the present invention, management server B sends when confirming response to management server C of domain C, and the OSD in this domain is believed
Breath write is confirmed in response, by confirming that response carries the osd information in this domain.Management server C receive confirm should
When answering, can check whether confirmation response has and carry his domain osd information, if it is, illustrating that other domains have osd information to need
Superposition is assisted by the OSD superposition performs devices in this domain, in other words this domain needs the osd information of superposition except this domain
His the domain osd information for confirming to be carried in response is also possible that outside osd information.Therefore management server C is to this domain superposition
Device sends when superposing control is instructed and can together carry the osd information in this domain and his domain osd information.Certainly, if domain C
In do not dispose yet OSD superposition performs device if, its can also by the osd information in this domain be inserted into confirmation response in, continue
Send to domain D, to ask domain D（Assume that domain D has OSD to be superimposed performs device）To assist superposition, this time domain D needs to assist domain B
Osd information is superimposed with domain C.
Video data identification generally can be the mark of source equipment, such as the mark of IPC, and the introducing of this mark can be with
The video data of separate sources is treated with a certain discrimination.Such as some video datas are when through this domain, it is not necessary to which superposition is originally
Domain osd information, what is had then needs, or even the video data of separate sources needs the osd information of superposition to be not quite similar.Management service
The osd information that video data identification and corresponding needs are superimposed can together be carried and is sent in superposing control instruction by device
OSD is superimposed performs device.Operate in forwarding server or the superpositions of the OSD on request end performs device then can come receiving
From the video data of source when, determined according to video data identification using which need superposition osd information.
In fact, in a monitoring system, may be packaged to video data using various ways.OSD superpositions are held
Luggage is put to be needed to be handled differently the packaged type of video data.In fact, there is various popular agreements can at present
To realize that the message of video data is encapsulated.Three kinds of agreements the most typical include Real-time Transport Protocol, TS agreements and PS agreements.Connecing
When receiving video data stream, the message encapsulated type for judging video data is needed, because in the encapsulation of different type video data,
The inserted mode of osd information is different, it is therefore desirable to inserted come pre-configured corresponding with encapsulated type according to service needed
Enter rule, for different encapsulated types needs to be superimposed OSD letters using different insertion rules come the insertion in video data stream
Breath.
By taking Real-time Transport Protocol as an example, when video data stream is transmitted using RTP modes, RTP header information can be expanded
Exhibition, it would be desirable to be superimposed osd information and be put into RTP headers expansion area（Header extension）In, the concrete form of message with
And osd information encapsulates concrete form and may be referred to shown in Fig. 6 a and Fig. 6 b.If video data stream adopts PS/TS（Program
Stream/Transport Stream）When mode is transmitted, can be in the PSM of PS messages（Program Stream Map, program
Stream mapping）Or in the PMT of TS messages（TS Program Map Table, transport stream Program Map Table）In, increase a kind of letter
Cease data flow to describe osd information.Specified according to ITU-T Rec.H.222.0 (05/2006), PID0x0004-0x1FFE models
Enclosing can be with self-defined transport-type.In TS messages, 0x0100 can be selected for osd information data transmission；In PS messages
In, the 0xFE of reservation can be selected as the Stream_id of osd information data transfer（Traffic identifier）.PS and TS has after improvement
Body encapsulation format may be referred to Fig. 7 and Fig. 8 examples, and the concrete encapsulation format of osd information may be referred to Fig. 9 examples.
RTP messages, TS messages and PS messages are in fact a kind of messages of application.It can be encapsulated in TCP
Or in UDP messages, TCP or UDP messages can be encapsulated in IP messages and be transmitted again.In fact may in an IP message
Carry multiple RTP messages or multiple TS messages or multiple PS messages.By taking PS as an example, it is assumed that carry in an IP message multiple
PS messages, then the PS messages the inside encapsulation having is video data, what is had is then encapsulation osd information.So-called video data stream
From the point of view of a session angle, such as IP message five-tuple identical IP messages are referred to as a video data stream.OSD
Information can be encapsulated in the PS messages that some are carried by IP messages.
After above-mentioned flow process, request end can just receive video data stream, and it may determine that the encapsulation lattice of video data
Formula, if the encapsulation of RTP messages, then can first check whether there is extension header, if there is extension header, then by OSD therein
Information puts forward.If the encapsulation of PS/TS messages, then may determine that whether PID or Stream_id is osd information ID, if
It is then to read correspondence osd information.Request end is added to the above-mentioned osd information for getting when decoding to video data
On video pictures, the concrete display location on picture can be by decoding end control, it is also possible to the position letter carried by osd information
Cease to indicate.
Presently preferred embodiments of the present invention is the foregoing is only, not to limit the present invention, all essences in the present invention
Within god and principle, any modification, equivalent substitution and improvements done etc. should be included within the scope of protection of the invention.
Claims (16)
1. a kind of OSD is superimposed managing device, is applied in the management server of monitoring system, and wherein the monitoring system also includes turning
Server, video data source and video data request end are sent out, the video data source includes that headend equipment or storage set
Standby, the management server is used to from video data source be video data request end schedule video data that the device to include：
Requesting processing, response processing unit and OSD control units；It is characterized in that：
Requesting processing, for when video data request is received from video data request end side, to video data source
Extreme direction sends video data request to be scheduled to specify recipient from the video data of source；
Response processing unit, for receiving confirmation response corresponding with the video data request from video data source side
Afterwards, continue to be sent to request extreme direction and confirm response；
OSD control units, for response processing unit receive confirmation response after and specify recipient belong to this domain when, to this
Specified recipient sends the instruction of OSD superposing controls；Wherein carry need corresponding with the video data in the superposing control instruction
The osd information to be superimposed, wherein this need be superimposed osd information at least include this domain osd information.
2. device as claimed in claim 1, it is characterised in that the response processing unit is further used for checking from source
Confirmation response in the presence or absence of his domain osd information, if it is present obtaining this his domain osd information as the OSD for needing superposition
Information；
The response processing unit is further used for when specified recipient is not belonging to this domain, is continuing to send true to request extreme direction
Before recognizing response, first this domain osd information is inserted in the confirmation response.
3. device as claimed in claim 1, it is characterised in that the superposing control instruction further includes video data mark
Know.
4. device as claimed in claim 1, it is characterised in that the specified recipient is forwarding server or request end.
5. a kind of OSD is superimposed performs device, is applied on the forwarding server in monitoring system, and wherein the monitoring system also includes
Management server, video data source and video data request end, the video data source includes headend equipment or storage
Equipment, the management server is used for from video data source as video data request end schedule video data, the device bag
Include OSD recording units and forwarding performance element；It is characterized in that：
OSD recording units, for when the instruction of OSD superposing controls is received from management server, obtaining the needs for wherein carrying
The osd information of superposition；
Forwarding performance element, for will send in the osd information insertion video data stream for needing superposition and then to request end side.
6. device as claimed in claim 5, it is characterised in that：The OSD recording units are further used for from OSD superposing controls
Video data identification corresponding with superposition osd information is needed is obtained in instruction, and preserves both corresponding relations；
The forwarding performance element is further used for determining the corresponding needs superposition of the video data according to video data identification
Osd information.
7. device as claimed in claim 5, it is characterised in that：Also include：
Forwarding judging unit, for determining the encapsulated type of the video data for needing forwarding；Wherein described forwarding performance element enters
One step is used to that the osd information for needing superposition to be inserted into into video data using corresponding insertion rule according to the encapsulated type for determining
In stream.
8. device as claimed in claim 5, it is characterised in that：It is described to need to be superimposed osd information for this domain osd information or sheet
Domain osd information domain and the combination of his domain osd information.
9. a kind of OSD is superimposed management method, is applied in the management server of monitoring system, and wherein the monitoring system also includes turning
Server, video data source and video data request end are sent out, the video data source includes that headend equipment or storage set
Standby, the management server is used to from video data source be video data request end schedule video data, it is characterised in that
The method is comprised the following steps：
Step A, from video data request end side receive video data ask when, to video data source extreme direction send regard
Frequency request of data with will from the video data of source be scheduled to specify recipient；
Step B, from video data source side receive it is corresponding with the video data request confirmation response after, continue to please
Ask extreme direction to send and confirm response；
Step C, receive confirm response after and when specifying recipient to belong to this domain, send OSD superpositions to the specified recipient
Control instruction；Wherein the osd information for needing and being superimposed corresponding with the video data is carried in the superposing control instruction, wherein should
Need to be superimposed osd information at least including this domain osd information.
10. method as claimed in claim 9, it is characterised in that step B is further included：Check from source really
Recognize with the presence or absence of his domain osd information in response, if it is present obtain his the domain osd information believing as the OSD for needing superposition
Breath；And when specified recipient is not belonging to this domain, before continuing to send confirmation response to request extreme direction, first in the confirmation response
Middle this domain osd information of insertion.
11. methods as claimed in claim 9, it is characterised in that the superposing control instruction further includes video data
Mark.
12. methods as claimed in claim 9, it is characterised in that the specified recipient is forwarding server or request end.
A kind of 13. OSD are superimposed execution method, are applied on the forwarding server in monitoring system, and wherein the monitoring system is also wrapped
Management server, video data source and video data request end are included, the video data source includes headend equipment or deposits
Storage equipment, the management server is used for from video data source as video data request end schedule video data, its feature
It is that the method includes：
Step I, from management server receive OSD superposing controls instruct when, acquisition wherein carry needs superposition OSD letter
Breath；
Send in step II, the osd information insertion video data stream for being superimposed needs and then to request end side.
14. methods as claimed in claim 13, it is characterised in that：Step I is specifically included：From the instruction of OSD superposing controls
Middle acquisition video data identification corresponding with superposition osd information is needed, and preserve both corresponding relations；
Step II is specifically included：The corresponding osd information for needing to be superimposed of the video data is determined according to video data identification.
15. methods as claimed in claim 13, it is characterised in that：Also include：
Step III, the encapsulated type for determining the video data for needing forwarding；Step II is specifically included：According to the envelope for determining
Dress type is inserted into the osd information for needing superposition in video data stream using corresponding insertion rule.
16. methods as claimed in claim 13, it is characterised in that：It is described need be superimposed osd information be this domain osd information or
This domain osd information domain and the combination of his domain osd information.
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| CN103678124B (en) * | 2013-12-03 | 2017-03-22 | 浙江宇视科技有限公司 | Video surveillance platform auto-test method and device based on continuous integrated environment |
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