CN104065656B - A kind of media stream data recognition methods - Google Patents
A kind of media stream data recognition methods Download PDFInfo
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- CN104065656B CN104065656B CN201410288681.6A CN201410288681A CN104065656B CN 104065656 B CN104065656 B CN 104065656B CN 201410288681 A CN201410288681 A CN 201410288681A CN 104065656 B CN104065656 B CN 104065656B
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Abstract
The present invention provides a kind of media stream data recognition methods, and this method includes：Client sends the request of the first media stream data to NVR；NVR applies for first media stream identification, and the mark is sent into client device；Client is received after first media stream identification, judges whether to establish Media Stream connection with NVR, if it is, the first media stream identification is sent into NVR by the connection；If it is not, then first setting up the connection with NVR, then first media stream identification is sent to by NVR by the connection；NVR sends the first media stream data message on which, wherein including the first media stream identification；Asked when client sends the second media stream data to NVR, NVR multiplexed first media streams are connected, sent to client in the second media stream data message, the message and carry the second media stream identification, so that client is made a distinction by the different media stream identifications of carrying to two media stream datas.
Description
Technical field
The present invention relates to technical field of video monitoring, more particularly to a kind of media stream data recognition methods.
Background technology
As video monitoring is applied more and more extensively in the life of people, it can also be got over for the demand data of video monitoring
Come more.A kind of IP (agreement interconnected between Internet Protocol, network) monitoring network includes, NVR (Network
Video Recorder, network hard disk video recorder), monitoring frontend (such as IPC network video camera), NAT (Network
Address Translation, network address translation) equipment and client device.Wherein, NVR and monitoring frontend are located at
In the private network that NAT device is built.When client device is to NVR device request media stream datas, NVR equipment and client device are built
Vertical Media Stream connection, NVR equipment is by media stream data by the linkup transmit of foundation to client device.
In the prior art, in order to distinguish the different media stream datas transmitted, it is necessary to all divide for every media stream data
With a port number, each one Media Stream connection of port numbers correspondence, during Media Stream connection is set up, NAT device meeting
For the connection of each Media Stream corresponding NAT table is generated according to port numbers.If there is multiple client equipment program request multiple simultaneously
During media stream data, can take will be produced on substantial amounts of port numbers, NAT device substantial amounts of NAT table, occupying system resources, and
And list item increases, the time for cost of tabling look-up will also increase, so as to influence the efficiency that media stream data is transmitted.
The content of the invention
In view of this, offer method of the present invention a kind of media stream data recognition methods is solved due to different media flows data
Transmission takes port numbers excessively, so that cause NAT table excessive, the problem of media stream data efficiency of transmission is not high.
A kind of media stream data recognition methods, methods described is applied to client device, and the client device is located at monitoring
In system, the monitoring system also includes hair stream side apparatus, and server device, the hair stream side apparatus and server device are located at NAT
In the private network of device build, methods described includes step：
Step 1, when client device need obtain hair stream side apparatus the first media stream data message when, send the first matchmaker
Body flow data is asked to server device；
The first media stream identification that step 2, reception server device are issued；
Step 3, judge whether with it is described hair stream side apparatus set up Media Stream connection, if it is, by having built
Vertical Media Stream, which is connected to the hair, flows side apparatus transmission first media stream identification, if it is not, then first and described hair stream side
Equipment sets up Media Stream connection, then sends first media stream identification in the connection of the foundation again；
Step 4, the first media stream data message for receiving the linkup transmit that the hair stream side apparatus passes through the foundation, should
First media stream identification is carried in media stream data message, the first media stream data is identified by the media stream identification；
Step 5, when client device needs to obtain the second media stream data message of the hair stream side apparatus, send the
Two media stream datas are asked to server device；
The second media stream identification that step 6, reception server device are issued；
Step 7, judge whether with it is described hair stream side apparatus set up Media Stream connection, if it is, by having built
Vertical Media Stream, which is connected to the hair, flows side apparatus transmission second media stream identification, if it is not, then first and described hair stream side
Equipment sets up Media Stream connection, then sends second media stream identification in the connection of the foundation again；
The second Media Stream that step 8, the reception hair stream side apparatus are sent in the connection for sending the first media stream data
Second media stream identification is carried in data message, the media stream data message, second is identified by the media stream identification
Media stream data.
Further, the media stream identification is represented with the preceding n data bit in media stream data area.
Further, methods described also includes：
When needing to terminate first media stream data, sent to server device and terminate request, and please in the termination
Seek the first media stream identification of middle carrying.
A kind of media stream data recognition methods, methods described is applied to hair stream side apparatus, and the client device is located at monitoring
In system, the monitoring system also includes hair stream side apparatus, and server device, the hair stream side apparatus and server device are located at NAT
In the private network of device build, methods described includes：
Receive the first media stream identification distributed for the first media stream data that server device is sent；
Receive client device and pass through the media stream identification of Media Stream linkup transmit first that has built up；
Connected by the Media Stream having built up to client device and send the first media stream data message, the matchmaker
The first media stream identification is carried in body flow data message；
When second media stream identification of the reception client device by the Media Stream linkup transmit having built up, by multiple
Connected with the described Media Stream having built up to client device and send the second media stream data message, second media stream number
According to carried in message the second media stream data mark so that client device by different media stream identifications to two Media Streams
Data make a distinction.
Further, the media stream identification is represented with the preceding n data bit in media stream data area.
A kind of media stream data recognition methods, this method is applied to monitoring system, and the monitoring system includes：It is private positioned at first
The network hard disk video recorder NVR equipment of net, and positioned at the client device of other networks, it is characterised in that this method includes：
The client device sends the request of the first media stream data to NVR equipment；
NVR equipment is received after first media stream data request, is first media stream data in media stream identification storehouse
Request one untapped first media stream identification of application, and first media stream identification is sent to client device；
Client device is received after first media stream identification, further determines whether to set up with the NVR equipment
Media Stream connection, if it is, first media stream identification is sent into NVR equipment by the connection；If it is not, then first
The connection with NVR equipment is set up, after a connection setup, first media stream identification is sent to by NVR equipment by the connection；
NVR equipment is received after the first media stream identification that client device passes through the linkup transmit, on which
Send and first media stream identification is included in the first media stream data message, the first media stream data message；
Asked when client device sends the second media stream data to NVR equipment, NVR equipment multiplexed first media stream connects
Connect, sending carrying NVR in the second media stream data message, the second media stream data message to the client device distributes to
Second media stream identification of second media stream data, so that the different media stream identifications that the client device passes through carrying
Two media stream datas are made a distinction.
Further, when needing to terminate first media stream data, client device sends to terminate to NVR equipment and asked
Ask, the first media stream identification is carried in termination request；NVR equipment is received after termination request, stops sending first matchmaker
Body flow data message.
Further, NVR equipment is judged after the wholly off transmission of all Media Streams in a connection, discharges this
Connection.
Compared with prior art, it is of the invention by distributing different media stream datas different media stream identifications, so that
Hair stream side apparatus and client device can be multiplexed area in the case that same Media Stream is connected according to different media stream identifications
Divide different media stream datas, and connected by being multiplexed same Media Stream, reduce the distribution of port numbers, reduce NAT table
The quantity of item, alleviates the operating pressure of NAT device, accordingly improves the efficiency of transmission of media stream data.
Brief description of the drawings
Fig. 1 is a kind of IP monitoring network diagrams in the embodiment of the present invention；
Fig. 2 is a kind of process chart of media stream data recognition methods in the embodiment of the present invention.
Embodiment
The problem of to solve to mention in background technology, the present invention provides a kind of media stream data identifying schemes.Program energy
The problem of a plurality of Media Stream takes numerous port numbers is reduced, the list item of NAT device is saved, media stream efficiency is improved.Below
Described in detail by specific embodiment.
In the monitoring system by taking Fig. 1 as an example, including NVR equipment, the front end surveillance device being connected with NVR equipment is (such as
IPC1 and IPC2), network forwarding equipment (such as NAT-1 equipment and NAT-2 equipment) and client device be (as carried the present invention program
The mobile phone or notebook computer of client functionality).NVR and front end surveillance device are located in the private network of NAT-1 equipment, client
Equipment is located in the private network of NAT-2 equipment.
Implement flow and refer to Fig. 2, in order that embodiment of the present invention is clearer, monitored with the IP in Fig. 1
Exemplified by network, it is described in detail.Private network IP address where NVR equipment is 192.168.1.1, the public network IP of NAT-1 equipment
Address is 1.1.1.1；The private network IP address of client device is 172.16.1.1, and the public network IP address of NAT-2 equipment is
2.2.2.2, and pre-set in present networks be used for set up Media Stream connection TCP port number be 12060.Adopted in the present embodiment
With TCP transmission agreement for example, can also use UDP host-host protocols certainly.
Assuming that live data from client device to NVR device request monitoring frontends when, according to the present invention implementation
Scheme, concrete processing procedure is with further reference to Fig. 2：
201st, client device sends the request of the first media stream data to NVR equipment.Private network where NVR equipment can be
User is disposed oneself, so can carry out the public and private net port of NVR equipment in advance on the NAT device (NAT-1) of the private network
Mapping.And user can record the corresponding public network address of NVR equipment and port numbers on the client device of oneself.This
Sample user just can be easily signed in in NVR equipment.So just the request of the first media stream data easily can be sent to NVR equipment.
Except of course that outside aforesaid way, the client device that also some other modes can allow outside NVR private networks easily and
NVR equipment is communicated, and these belong to prior art, will not be repeated here.
202nd, NVR equipment is received after the request of client device, and a unappropriated mark is selected from media stream identification storehouse
Know the mark as first media stream data, and the mark is sent to client device.
Such as the mark 100 is sent to client for 100, the NVR equipment that is designated that the first media stream data is distributed
Equipment.The public network port number 12060 for setting up Media Stream connection can also be sent to client device by NVR equipment.
203rd, client device receives after NVR equipment sends the first media stream identification and judges whether to establish with NVR equipment
Media Stream is connected；If establishing Media Stream connection, step 205 is performed；If it is not, step 204 is then performed, by client device master
Trend NVR equipment initiates connection, and step 205 is performed after a connection setup.
Client device is locally preserving list item as described in Table 1 when setting up connection to NVR equipment：
| Media stream identification | Media stream protocol | Source IP | Source port | Purpose IP | Destination interface |
| 100 | TCP | 1.1.1.1 | 12060 | 172.16.1.1 | 12060 |
Table 1
Source port 12060 in table, actually can also be different as destination slogan.How Media Stream company is set up
Connect and belong to prior art, be not described in detail.
After connection is set up, NVR equipment is locally generated correspondence list item, as shown in table 2：
| Media stream identification | Media stream protocol | Source IP address | Source port | Purpose IP address | Destination interface |
| 100 | TCP | 192.168.1.1 | 12060 | 2.2.2.2 | 12060 |
Table 2
205th, client device is connected to the NVR equipment by the Media Stream of foundation and sends the first media stream identification.
Client device is connected to the NVR equipment by the Media Stream and sends the first media stream identification 100, to notify
NVR equipment sends the first media stream data.
206th, the linkup transmit that the first media stream data message with the first media stream identification is passed through foundation by NVR equipment
To the client device.
NVR equipment is received after the first media stream identification 100 that the client device is sent, and first media are failed to be sold at auction
Know corresponding first media stream data to send to the client device.First media stream identification can be encapsulated in TCP reports
The data field of text.It is described in preceding 8 data bit of the media stream identification in the data field as a kind of embodiment
The form of media stream data message is as shown in table 3：
Table 3
Client device is decapsulated after receiving above-mentioned first media stream data message, then according to the first matchmaker therein
Whether it is the media stream data asked that body traffic identifier is distinguished.
207th, client device sends the request of the second media stream data to NVR equipment.If the client device also need to
The media stream data of NVR device requests second, such as above-mentioned first media stream data is IPC1 media stream data, and it is current
Need request IPC2 media stream data.Similarly perform step 201-206.Then the client device first will be to NVR equipment
Send the request of the second media stream data.
208th, NVR equipment is received after the request of client device, and a unappropriated mark is selected from media stream identification storehouse
Know the mark as the second media stream data, and the mark is sent to client device.Assuming that second media stream identification is
200, then NVR equipment the mark 200 is sent to client device.
209th, client device is connected by the Media Stream set up the second media stream identification being sent to NVR equipment.By
Media Stream is established in client device with NVR equipment to be connected, client device can be by being multiplexed the connection to the NVR
Equipment sends the second media stream identification.
210th, the linkup transmit that the second media stream data message with the second media stream identification is passed through foundation by NVR equipment
To the client device.Finally, NVR equipment can pass through corresponding second media stream data according to second media stream identification
The media stream data multiplexing same Media Stream connection of client device, i.e., two is sent in the connection of first media stream data.
Certainly, corresponding second media stream identification of second media stream data is also carried in the second media stream data message.Assuming that NVR
Equipment be its to be assigned with the second media stream identification be 200, table 1 is updated to table 4 by client device：
| Media stream identification | Media stream protocol | Source IP | Source port | Purpose IP | Destination interface |
| 100 | TCP | 1.1.1.1 | 12060 | 172.16.1.1 | 12060 |
| 200 | TCP | 1.1.1.1 | 12060 | 172.16.1.1 | 12060 |
Table 4
Table 2 is updated to table 5 by NVR equipment：
| Media stream identification | Media stream protocol | Source IP | Source port | Purpose IP | Destination interface |
| 100 | TCP | 192.168.1.1 | 12060 | 2.2.2.2 | 12060 |
| 200 | TCP | 192.168.1.1 | 12060 | 2.2.2.2 | 12060 |
Table 5
The present invention program distinguishes the media stream data of transmission using different marks entrained in every media stream data,
Realize the function that a plurality of media stream data is transmitted in the connection of same Media Stream.
In addition, when client device needs to stop the first media stream data, carrying upper described by being sent to NVR equipment
The stopping request of first media stream identification 100.NVR equipment can stop sending the first media stream number after receiving the stopping request
According to, and the first media stream identification 100 is reclaimed, it is included into home banking.It should be noted that due to also there is the second media stream number
According to so described Media Stream connection is not disconnected.Media Stream connection is disconnected if when being transmitted without other media stream data.
Above-described embodiment is illustrated by taking NVR as an example.In practice for monitoring frontend such as encoder EC and prison
The monitoring network for controlling server VM compositions is equally applicable.Monitoring frontend is properly termed as hair stream side apparatus, and monitoring server can
To be referred to as server device.Because NVR has the management function of monitoring server, at the same the monitoring data of front end transmission when
Time is also all passed through from NVR equipment, so NVR is actually hair stream side apparatus and the aggregate of server device.
The present invention distributes each media stream data different media stream identifications by server device, so that hair stream side is set
The standby media stream data different by being multiplexed same Media Stream connection transmission with client device, therefore reduce point of port numbers
Match somebody with somebody, reduce the quantity of NAT table, alleviate the operating pressure of NAT device, it is ensured that the efficiency of transmission of media stream data.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, all essences in the present invention
God is with principle, and any modifications, equivalent substitutions and improvements done etc. should be included within the scope of protection of the invention.
Claims (6)
1. a kind of media stream data recognition methods, it is characterised in that methods described is applied to client device, the client device
In monitoring system, the monitoring system also includes hair stream side apparatus, server device, the hair stream side apparatus and server device
In the private network built positioned at NAT device, methods described includes step：
Step 1, when client device need obtain hair stream side apparatus the first media stream data message when, send the first Media Stream
Request of data is to server device；
The first media stream identification that step 2, reception server device are issued；
Step 3, judge whether to set up Media Stream connection with the hair stream side apparatus, if it is, by having built up
Media Stream, which is connected to the hair, flows side apparatus transmission first media stream identification, if it is not, then first and described hair stream side apparatus
Media Stream connection is set up, first media stream identification is then sent in the connection of the foundation again；
Step 4, the reception hair stream linkup transmit first media stream data message of the side apparatus by the foundation, the Media Stream
First media stream identification is carried in data message, the first media stream data is identified by the media stream identification；
Step 5, when client device needs to obtain the second media stream data message of the hair stream side apparatus, send the second matchmaker
Body flow data is asked to server device；
The second media stream identification that step 6, reception server device are issued；
Step 7, judge whether to set up Media Stream connection with the hair stream side apparatus, if it is, by having built up
Media Stream, which is connected to the hair, flows side apparatus transmission second media stream identification, if it is not, then first and described hair stream side apparatus
Media Stream connection is set up, second media stream identification is then sent in the connection of the foundation again；
The second media stream data that step 8, the reception hair stream side apparatus are sent in the connection for sending the first media stream data
Second media stream identification is carried in message, the media stream data message, the second media are identified by the media stream identification
Flow data；
The media stream identification is represented with the preceding n data bit in media stream data area.
2. method as claimed in claim 1, it is characterised in that methods described also includes：
When needing to terminate first media stream data, sent to server device and terminate request, and in termination request
Carry the first media stream identification.
3. a kind of media stream data recognition methods, it is characterised in that methods described is applied to hair stream side apparatus, the client device
In monitoring system, the monitoring system also includes hair stream side apparatus, server device, the hair stream side apparatus and server device
In the private network built positioned at NAT device, methods described includes：
Receive the first media stream identification distributed for the first media stream data that server device is sent；
Receive client device and pass through the media stream identification of Media Stream linkup transmit first that has built up；
Connected by the Media Stream having built up to client device and send the first media stream data message, the Media Stream
The first media stream identification is carried in data message；
When second media stream identification of the reception client device by the Media Stream linkup transmit having built up, by being multiplexed
The Media Stream having built up stated connects to client device and sends the second media stream data message, the second media stream data report
The second media stream data mark is carried in text, so that client is carried out by different media stream identifications to two media stream datas
Distinguish；
The media stream identification is represented with the preceding n data bit in media stream data area.
4. a kind of media stream data recognition methods, this method is applied to monitoring system, the monitoring system includes：Positioned at the first private network
Network hard disk video recorder NVR equipment, and positioned at the client device of other networks, it is characterised in that this method includes：
The client device sends the request of the first media stream data to NVR equipment；
NVR equipment is received after first media stream data request, is asked in media stream identification storehouse for first media stream data
Apply for untapped first media stream identification, and first media stream identification is sent to client device；
Client device is received after first media stream identification, further determines whether to establish matchmaker with the NVR equipment
Body stream is connected, if it is, first media stream identification is sent into NVR equipment by the connection；If it is not, then first setting up
With the connection of NVR equipment, after a connection setup, first media stream identification is sent to by NVR equipment by the connection；
NVR equipment is received after the first media stream identification that client device passes through the linkup transmit, is sent on which
First media stream identification is included in first media stream data message, the first media stream data message；
Asked when client device sends the second media stream data to NVR equipment, the connection of NVR equipment multiplexed first media stream, to
The client device send carried in the second media stream data message, the second media stream data message NVR distribute to this
Second media stream identification of two media stream datas so that the client device by the different media stream identifications of carrying to two
Bar media stream data makes a distinction；The media stream identification is represented with the preceding n data bit in media stream data area.
5. method as claimed in claim 4, it is characterised in that when needing to terminate first media stream data, client
Equipment is sent to NVR equipment terminates request, and the first media stream identification is carried in termination request；NVR equipment receives the termination
After request, stop sending the first media stream data message.
6. method as claimed in claim 5, it is characterised in that NVR equipment judges that all Media Streams in a connection are complete
Portion stops after sending, and discharges this connection.
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| CN105611208A (en) * | 2015-12-31 | 2016-05-25 | 深圳市磊科实业有限公司 | Method for performing real-time limited access on NVR (Network Video Recorder) by external terminal equipment |
| US10735808B2 (en) * | 2017-08-10 | 2020-08-04 | The Nielsen Company (Us), Llc | Methods and apparatus of media device detection for minimally invasive media meters |
| CN111245852B (en) * | 2020-01-16 | 2022-11-29 | 腾讯云计算（北京）有限责任公司 | Streaming data transmission method, device, system, access device and storage medium |
| CN113301060B (en) * | 2020-02-21 | 2023-04-07 | 浙江宇视科技有限公司 | Data transmission method, device, server and storage medium |
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