CN104065656A - Media stream data identification method - Google Patents
Media stream data identification method Download PDFInfo
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- CN104065656A CN104065656A CN201410288681.6A CN201410288681A CN104065656A CN 104065656 A CN104065656 A CN 104065656A CN 201410288681 A CN201410288681 A CN 201410288681A CN 104065656 A CN104065656 A CN 104065656A
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Abstract
The invention provides a media stream data identification method. The method comprises the following steps: a client side sends a first media stream data request to an NVR; the NVR applies for one first media stream identification and sends the identification to a client device; after receiving the first media stream identification, the client judges whether the media stream connection is established with the NVR; if so, the first media stream identification is sent to the NVR through the media stream connection; if not, the client establishes the connection with the NVR first, and then sends the first media stream identification to the NVR through the media stream connection; the NVR sends a first media stream data message on the connection, the first media stream data message comprising the first media stream identification; and when the client side sends a second media stream data request to the NVR, the NVR reuses the first media stream connection to send a second media stream data message to the client side, the second media stream data message carrying second media stream identification, so that the client side is allowed to identify two media stream data through the carried different media stream identifications.
Description
Technical field
The present invention relates to technical field of video monitoring, relate in particular to a kind of media stream data recognition methods.
Background technology
Along with video monitoring, in people's life, apply more and more extensively, for the demand data of video monitoring, also can get more and more.A kind of IP (Internet Protocol, the agreement interconnecting between network) monitor network comprises, NVR (Network Video Recorder, network hard disk video recorder), monitoring frontend (as IPC web camera), NAT (Network Address Translation, network address translation) equipment and client device.Wherein, NVR and monitoring frontend are arranged in the private network that NAT device builds.Client device is during to NVR device request media stream data, and NVR equipment is set up Media Stream with client device and is connected, and NVR equipment sends to client device by media stream data by this connection of setting up.
In prior art, different media stream data for district office's transmission, need to all distribute a port numbers for every media stream data, the corresponding Media Stream of each port numbers connects, at Media Stream, connect in the process of setting up, NAT device can generate corresponding NAT list item according to port numbers for each Media Stream connects.If while having a plurality of media stream data of a plurality of client device program request, can take a large amount of port numbers simultaneously, on NAT device, a large amount of NAT list items will be produced, occupying system resources, and list item increases, the time of the cost of tabling look-up also will increase, thereby affect the efficiency of media stream data transmission.
Summary of the invention
In view of this, a kind of media stream data recognition methods of the method that the invention provides solves transmission due to different media flows data, and to take port numbers too much, thereby cause NAT list item too much, the problem that media stream data efficiency of transmission is not high.
A media stream data recognition methods, described method is applied to client device, and this client device is arranged in supervisory control system, this supervisory control system also comprises sends out stream side apparatus, server device, this stream side apparatus and server device are arranged in the private network that NAT device builds, and described method comprises step:
Step 1, when client device need to obtain the first media stream data message of sending out stream side apparatus, the first media stream data request that sends is to server device;
The first Media Stream sign that step 2, reception server device issue;
Step 3, judge whether that setting up Media Stream with described stream side apparatus is connected, if, by the Media Stream connection of having set up, to described stream side apparatus, sending described the first Media Stream identifies, if not, first set up Media Stream with described stream side apparatus and be connected, and then in the connection of this foundation, send described the first Media Stream sign;
Step 4, the described stream side apparatus of sending out of reception, by the first media stream data message of the connection transmission of described foundation, carry described the first Media Stream and identify in this media stream data message, by this Media Stream, identify the first media stream data;
Step 5, when client device need to obtain described the second media stream data message of sending out stream side apparatus, the second media stream data request that sends is to server device;
The second Media Stream sign that step 6, reception server device issue;
Step 7, judge whether that setting up Media Stream with described stream side apparatus is connected, if, by the Media Stream connection of having set up, to described stream side apparatus, sending described the second Media Stream identifies, if not, first set up Media Stream with described stream side apparatus and be connected, and then in the connection of this foundation, send described the second Media Stream sign;
Step 8, the described stream side apparatus of sending out of reception are sending the second media stream data message sending in the connection of the first media stream data, carry described the second Media Stream and identify in this media stream data message, by this Media Stream, identify the second media stream data.
Further, front n the data bit representation of described Media Stream sign in media stream data district.
Further, described method also comprises:
When needs stop described the first media stream data, to server device, send the request of termination, and carry the first Media Stream sign in this termination request.
A media stream data recognition methods, described method is applied to send out stream side apparatus, and this client device is arranged in supervisory control system, this supervisory control system also comprises sends out stream side apparatus, server device, this stream side apparatus and server device are arranged in the private network that NAT device builds, and described method comprises:
What receive server device transmission is the first Media Stream sign that the first media stream data distributes;
Receiving client device identifies by Media Stream connection transmission the first Media Stream of having set up;
By the described Media Stream of having set up, connect and send the first media stream data message to client device, in described media stream data message, carry the first Media Stream sign;
When reception client device connects by the Media Stream of having set up the second Media Stream sign sending, by the multiplexing described Media Stream of having set up, connect and send the second media stream data message to client device, in this second media stream data message, carry the second media stream data sign, so that client device is distinguished two media stream datas by different Media Stream signs.
Further, front n the data bit representation of described Media Stream sign in media stream data district.
A media stream data recognition methods, the method is applied to supervisory control system, and this supervisory control system comprises: be positioned at the network hard disk video recorder NVR equipment of the first private network, and be positioned at the client device of other network, it is characterized in that, the method comprises:
This client device sends the first media stream data request to NVR equipment;
NVR equipment is received after this first media stream data request, is untapped first Media Stream sign of this first media stream data request application, and this first Media Stream sign is sent to client device in Media Stream home banking;
Client device receives after described the first Media Stream sign, further judges whether to have set up Media Stream connection with described NVR equipment, if so, by this connection, described the first Media Stream sign is sent to NVR equipment; If not, the first connection of foundation and NVR equipment, after connecting foundation, sends to NVR equipment by this connection by described the first Media Stream sign;
NVR equipment receives after the first Media Stream sign that client device sends by described connection, sends the first media stream data message in this connections, comprises described the first Media Stream and identify in described the first media stream data message;
When client device sends the second media stream data request to NVR equipment, multiplexing the first Media Stream of NVR equipment connects, to described client device, send the second media stream data message, in this second media stream data message, carry NVR and distribute to the second Media Stream sign of this second media stream data, so that described client device is distinguished two media stream datas by the different Media Stream sign of carrying.
Further, when needs stop described the first media stream data, client device sends to NVR equipment the request of termination, carries the first Media Stream sign in this termination request; NVR equipment receives after this termination request, stops sending this first media stream data message.
Further, after all Media Streams in a connection of NVR equipment judgement all stop sending, discharge this connection.
Compared with prior art, the present invention distributes different Media Streams to identify by the media stream data to different, so that send out stream side apparatus and client device, can be identified at according to different Media Streams in the situation that multiplexing same Media Stream is connected and distinguish different media stream datas, and connect by multiplexing same Media Stream, reduced the distribution of port numbers, reduced the quantity of NAT list item, alleviated the operating pressure of NAT device, the corresponding efficiency of transmission that improves media stream data.
Accompanying drawing explanation
Fig. 1 is a kind of IP monitor network schematic diagram in the embodiment of the present invention;
Fig. 2 is the process chart of a kind of media stream data recognition methods in the embodiment of the present invention.
Embodiment
For solving the problem of mentioning in background technology, the invention provides a kind of media stream data identifying schemes.This scheme can reduce the problem that many Media Streams take numerous port numbers, saves the list item of NAT device, improves Media Stream transmitting efficiency.By specific embodiment, describe in detail below.
Take in the supervisory control system that Fig. 1 is example, comprise NVR equipment, the front end watch-dog being connected with NVR equipment (as IPC1 and IPC2), network forwarding equipment (as NAT-1 equipment and NAT-2 equipment) and client device (as the mobile phone with the present invention program's client functionality or notebook computer).NVR and front end watch-dog are arranged in the private network of NAT-1 equipment, and client device is arranged in the private network of NAT-2 equipment.
Specific implementation flow process refers to Fig. 2, and in order to make embodiment of the present invention clearer, the IP monitor network of take in Fig. 1 is example, is elaborated.The private network IP address at NVR equipment place is 192.168.1.1, and the public network IP address of NAT-1 equipment 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 to set in advance in present networks be 12060 for setting up the tcp port number that Media Stream connects.In the present embodiment, adopt TCP host-host protocol to illustrate, certainly also can adopt UDP host-host protocol.
While supposing client device to the live data of NVR device request monitoring frontend, according to embodiment of the present invention, concrete processing procedure is with further reference to Fig. 2:
201, client device sends the first media stream data request to NVR equipment.The private network at NVR equipment place can be that user oneself disposes, so can carry out in advance the mapping of the public and private net port of NVR equipment on the NAT device (NAT-1) of this private network.And user can record public network address and the port numbers that this NVR equipment is corresponding on the client device of oneself.User just can easily sign in on NVR equipment like this.So just can easily send the first media stream data request to NVR equipment.Certainly except aforesaid way, also have other some modes can allow the client device in NVR private network outside communicate with NVR equipment like a cork, these all belong to prior art, do not repeat them here.
202, NVR equipment receives after the request of client device, selects a unappropriated sign as the sign of this first media stream data, and this sign is sent to client device from Media Stream home banking.
Such as be that 100, the NVR equipment that is designated that the first media stream data distributes sends to client device by this sign 100.NVR equipment can also send to client device by the public network port numbers 12060 of setting up Media Stream connection.
203, client device is received after NVR equipment sends the first Media Stream sign and is judged whether that having set up Media Stream with NVR equipment is connected; If set up Media Stream connection, perform step 205; If not, perform step 204, by client device, initiatively to NVR equipment, initiated to connect, execution step 205 after connecting foundation.
Client device, when connecting to NVR equipment, is preserved list item as described in Table 1 in this locality:
| Media Stream sign | Media stream protocol | Source IP | Source port | Object IP | Destination interface |
| 100 | TCP | 1.1.1.1 | 12060 | 172.16.1.1 | 12060 |
Table 1
Source port 12060 in table is the same with destination slogan, in fact also can be different.How to set up Media Stream connection and belong to prior art, be not described in detail.
Connect after foundation, NVR equipment generates corresponding list item in this locality, as shown in table 2:
| Media Stream sign | Media stream protocol | Source IP address | Source port | Object IP address | Destination interface |
| 100 | TCP | 192.168.1.1 | 12060 | 2.2.2.2 | 12060 |
Table 2
205, client device is connected and to described NVR equipment, is sent the first Media Stream and identify by the Media Stream of setting up.
Client device is connected to described NVR equipment and is sent the first Media Stream sign 100 by described Media Stream, to notify NVR equipment to send the first media stream data.
206, NVR equipment is sent to described client device by the first media stream data message with the first Media Stream sign by the connection of setting up.
NVR equipment receives after the first Media Stream sign 100 of described client device transmission, and the first media stream data corresponding to this first Media Stream sign is sent to described client device.This first Media Stream sign can be encapsulated in the data field of TCP message.As a kind of execution mode, described Media Stream is identified in the front 8 bit data positions in described data field, and the form of described media stream data message is as shown in table 3:
Table 3
Client device carries out decapsulation after receiving above-mentioned the first media stream data message, and whether then according to the first Media Stream sign wherein, distinguish is the media stream data of request.
207, client device sends the second media stream data request to NVR equipment.If this client device also needs to this NVR device request the second media stream data, such as the media stream data that above-mentioned the first media stream data is IPC1, and the current media stream data that need to ask IPC2.Perform step similarly 201-206.Described client device first will send the second media stream data request to NVR equipment.
208, NVR equipment receives after the request of client device, selects a unappropriated sign as the sign of the second media stream data, and this sign is sent to client device from Media Stream home banking.Suppose that this second Media Stream is designated 200, NVR equipment sends to client device by this sign 200.
209, client device is connected the second Media Stream sign is sent to NVR equipment by the Media Stream of having set up.Due to client device and NVR equipment, set up Media Stream and be connected, client device can send the second Media Stream to described NVR equipment by multiplexing this connection and identify.
210, NVR equipment is sent to described client device by the second media stream data message with the second Media Stream sign by the connection of setting up.Finally, NVR equipment can send to client device by the second media stream data of correspondence in the connection by the first media stream data according to this second Media Stream sign, and two multiplexing same Media Streams of media stream data connect.Certainly, in the second media stream data message, also to carry the second Media Stream sign that this second media stream data is corresponding.Suppose that NVR equipment is designated 200 for it has distributed the second Media Stream, client device is updated to table 4 by table 1:
| Media Stream sign | Media stream protocol | Source IP | Source port | Object 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
NVR equipment is updated to table 5 by table 2:
| Media Stream sign | Media stream protocol | Source IP | Source port | Object 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 utilizes different sign entrained in every media stream data to distinguish the media stream data of transmission, has realized the function of transmitting many media stream datas on same Media Stream connects.
In addition, when client device need to stop the first media stream data, by send the request that stops of carrying the above the first Media Stream sign 100 to NVR equipment.NVR equipment stops can stopping sending the first media stream data after request described in receiving, and reclaims the first Media Stream sign 100, is included in home banking.It should be noted that, owing to also there being the second media stream data, so described Media Stream connects, be not disconnected.If disconnecting Media Stream while there is no other media stream data transmission connects.
Above-described embodiment be take NVR and is described as example.In fact as applicable equally in the monitor network of encoder EC and monitoring server VM formation for monitoring frontend.Monitoring frontend can be called sends out stream side apparatus, and monitoring server can be called server device.Because NVR has the management function of monitoring server, the monitor data of front end also process from NVR equipment all when sending simultaneously, so NVR is actually an aggregate of sending out stream side apparatus and server device.
The present invention distributes different Media Streams to identify by server device to each media stream data, so that send out stream side apparatus, by multiplexing same Media Stream, be connected the different media stream data of transmission with client device, therefore reduced the distribution of port numbers, reduced the quantity of NAT list item, alleviate the operating pressure of NAT device, guaranteed the efficiency of transmission of media stream data.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of making, be equal to replacement, improvement etc., within all should being included in the scope of protection of the invention.
Claims (8)
1. a media stream data recognition methods, it is characterized in that, described method is applied to client device, this client device is arranged in supervisory control system, this supervisory control system also comprises sends out stream side apparatus, server device, this stream side apparatus and server device are arranged in the private network that NAT device builds, and described method comprises step:
Step 1, when client device need to obtain the first media stream data message of sending out stream side apparatus, the first media stream data request that sends is to server device;
The first Media Stream sign that step 2, reception server device issue;
Step 3, judge whether that setting up Media Stream with described stream side apparatus is connected, if, by the Media Stream connection of having set up, to described stream side apparatus, sending described the first Media Stream identifies, if not, first set up Media Stream with described stream side apparatus and be connected, and then in the connection of this foundation, send described the first Media Stream sign;
Step 4, described stream side apparatus of reception send the first media stream data message by the connection of described foundation, carry described the first Media Stream sign in this media stream data message, by this Media Stream, identify the first media stream data;
Step 5, when client device need to obtain described the second media stream data message of sending out stream side apparatus, the second media stream data request that sends is to server device;
The second Media Stream sign that step 6, reception server device issue;
Step 7, judge whether that setting up Media Stream with described stream side apparatus is connected, if, by the Media Stream connection of having set up, to described stream side apparatus, sending described the second Media Stream identifies, if not, first set up Media Stream with described stream side apparatus and be connected, and then in the connection of this foundation, send described the second Media Stream sign;
Step 8, the described stream side apparatus of sending out of reception are sending the second media stream data message sending in the connection of the first media stream data, carry described the second Media Stream and identify in this media stream data message, by this Media Stream, identify the second media stream data.
2. as claimed in claim 1, it is characterized in that described Media Stream front n data bit representation in media stream data district for sign.
3. method as claimed in claim 1, is characterized in that, described method also comprises:
When needs stop described the first media stream data, to server device, send the request of termination, and carry the first Media Stream sign in this termination request.
4. a media stream data recognition methods, it is characterized in that, described method is applied to send out stream side apparatus, this client device is arranged in supervisory control system, this supervisory control system also comprises sends out stream side apparatus, server device, this stream side apparatus and server device are arranged in the private network that NAT device builds, and described method comprises:
What receive server device transmission is the first Media Stream sign that the first media stream data distributes;
Receiving client device identifies by Media Stream connection transmission the first Media Stream of having set up;
By the described Media Stream of having set up, connect and send the first media stream data message to client device, in described media stream data message, carry the first Media Stream sign;
When reception client device connects by the Media Stream of having set up the second Media Stream sign sending, by the multiplexing described Media Stream of having set up, connect and send the second media stream data message to client device, in this second media stream data message, carry the second media stream data sign, so that client is distinguished two media stream datas by different Media Stream signs.
5. method as claimed in claim 4, is characterized in that,
Described Media Stream front n data bit representation in media stream data district for sign.
6. a media stream data recognition methods, the method is applied to supervisory control system, and this supervisory control system comprises: be positioned at the network hard disk video recorder NVR equipment of the first private network, and be positioned at the client device of other network, it is characterized in that, the method comprises:
This client device sends the first media stream data request to NVR equipment;
NVR equipment is received after this first media stream data request, is untapped first Media Stream sign of this first media stream data request application, and this first Media Stream sign is sent to client device in Media Stream home banking;
Client device receives after described the first Media Stream sign, further judges whether to have set up Media Stream connection with described NVR equipment, if so, by this connection, described the first Media Stream sign is sent to NVR equipment; If not, the first connection of foundation and NVR equipment, after connecting foundation, sends to NVR equipment by this connection by described the first Media Stream sign;
NVR equipment receives after the first Media Stream sign that client device sends by described connection, sends the first media stream data message in this connections, comprises described the first Media Stream and identify in described the first media stream data message;
When client device sends the second media stream data request to NVR equipment, multiplexing the first Media Stream of NVR equipment connects, to described client device, send the second media stream data message, in this second media stream data message, carry NVR and distribute to the second Media Stream sign of this second media stream data, so that described client device is distinguished two media stream datas by the different Media Stream sign of carrying.
7. method as claimed in claim 6, is characterized in that, when needs stop described the first media stream data, client device sends to NVR equipment the request of termination, carries the first Media Stream sign in this termination request; NVR equipment receives after this termination request, stops sending this first media stream data message.
8. method as claimed in claim 7, is characterized in that, after all Media Streams in a connection of NVR equipment judgement all stop sending, discharges this connection.
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| CN104065656B (en) | 2017-07-14 |
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