WO2018129758A1 - Monitor video distribution method and device thereof - Google Patents

Abstract

A monitor video distribution device and a method. The monitor video distribution device comprises a monitor terminal, a monitor server, a media processing device, an encoding and decoding device, and a camera; a video stream to the encoding and decoding device is not re-established when calling the video of a monitor site by a divisional monitor terminal is achieved; and instead, the video stream is distributed to the divisional monitor terminal after a video comparison processing is performed directly in the media processing device, thus saving video stream data; and furthermore, the subsequent calling of the camera video of the monitor site by any monitor terminal is achieved by distributing data after a comparison processing is carried out in the media processing device, thus breaking the limitation of calls of the video of a monitor site; due to the reduced signaling message establishment process and video stream transmission process with a large data volume, a video stream calling processing mechanism of the media processing device to camera resources is optimized within a limited bandwidth, and thus bandwidth usage efficiency is improved.

Description

Method and device for distributing monitoring video Technical field

The present invention relates to the field of surveillance video processing, and in particular, to a method and apparatus for distributing surveillance video.

Background technique

The monitoring system consists of 5 parts: camera, transmission, control, display, and record registration. The camera transmits the video image to the media processing device through the coaxial video cable, and the media processing device distributes the video signal to the monitoring and recording devices such as the monitoring terminals, and simultaneously records the voice signal to be transmitted into the video recorder. Through the monitoring terminal, the operator can issue commands to control the up, down, left, and right movements of the pan/tilt and adjust the zoom magnification of the lens, and can realize the multi-channel camera and the pan/tilt through the monitoring terminal. Switch between.

The traditional video surveillance system calls video directly from the camera, and does not consider the limitations of the external environment. For example, without considering the pressure of bandwidth resources, under certain network transmission speeds, such as different monitoring terminals to the same surveillance video. When the call is made, the call bottleneck occurs and the number of calls is limited.

Summary of the invention

The object of the present invention is to overcome the above problems existing in the prior art, and to provide a monitoring video distribution method and device thereof, which are used for optimizing bandwidth utilization under limited bandwidth and breaking the limitation of a limited number of video resources called by a camera resource. .

In order to achieve the above technical effects and achieve the above technical effects, the present invention is achieved by the following technical solutions:

A monitoring video distribution method and device thereof, comprising a monitoring terminal, a monitoring server, a media processing device, a codec device, and a camera;

The monitoring terminal is configured to provide an interactive interface for a video resource scheduling operation, and implement a video one-click call, a video call, and a video push function; the monitoring terminal includes a headquarters monitoring terminal and a branch monitoring terminal;

The monitoring server is configured to perform integrated scheduling control, video media processing, user registration management, and call routing analysis functions;

The media processing device is configured to implement video stream distribution and an end user registration proxy function;

The codec device is configured to provide an audio and video access function, and provide a codec function of the high definition video, and a video resolution conversion function;

The camera is used to implement video image acquisition and transmission functions.

Further, the device accessed by the codec device includes a high definition or standard definition analog camera, a large screen, a projector, a computer image, and an analog matrix.

Further, the monitoring terminal, the media processing device, and the codec device follow the standard SIP protocol REGISTER message, and the monitoring terminal, the media processing device, and the codec device are registered to the monitoring server.

Further, the monitoring terminal, the monitoring server, the media processing device, the codec device, and the inter-camera communication adopt a signaling flow and a media stream; the signaling flow is used for transmitting and returning control instructions; and the media stream is used for Transfer monitoring video data information.

Further, the signaling flow is implemented by using a SIP message.

Further, the media stream is implemented by using an RTP message.

A method for distributing surveillance video includes the following steps:

The video stream communication between the monitoring terminal and the monitoring server, the monitoring server, and the media processing device is established. The headquarters monitoring terminal sends signaling to the monitoring server, and the monitoring server returns the SDP message of the monitoring server paired with the headquarters monitoring terminal; the monitoring server receives the headquarters monitoring. After the terminal sends the signaling, the terminal forwards to the matched media processing device, and the media processing device returns an SDP message of the media processing device paired with the monitoring server;

Establishing a video stream communication between the media processing device and the codec device, the media processing device sends signaling to the matched codec device, and the codec device returns an SDP message of the codec device paired with the media processing device;

Establishing a branch monitoring terminal and monitoring server, monitoring server and media processing device video stream communication, the branch monitoring terminal sends signaling to the monitoring server, and the receiving branch monitoring terminal of the monitoring server sends signaling to the matched media processing device. The media processing device determines to adjust the repeatability of the access device, and the monitoring server returns an SDP message of the monitoring server paired with the branch monitoring terminal; the media processing device returns an SDP message of the media processing device paired with the monitoring server.

Further, the video resolution correction is further included; the video resolution correction is used to unify the resolution between the monitoring terminal, the monitoring server, and the codec device.

Further, the video resolution correction includes video scaling; the video scaling is used by the monitoring terminal, and the monitoring server has a resolution smaller than that of the encoding and decoding device, and the scaling is performed. Decode device video stream resolution.

Further, the video resolution correction further includes video padding; the video padding is used for Filling the video stream vacant area of the codec device when the resolution of the monitoring terminal and the monitoring server is greater than the resolution of the codec device

Advantageous Effects of the Invention The present invention provides a monitoring device for monitoring video, including a monitoring terminal, a monitoring server, a media processing device, a codec device, and a camera. The present invention also relates to a method for distributing a monitoring video; When the monitoring terminal monitors the video of the monitoring point, it does not establish the video stream to the codec device again. Instead, after directly performing video comparison processing from the media processing device, the video stream is distributed to the branch monitoring terminal to save video. Streaming data, while any subsequent monitoring terminal monitors the camera video of the monitoring point, distributes the data after comparison and processing by the media processing device, breaks the limitation of the number of video calls of the monitoring point, saves the signaling message establishment process and big data. The video stream transmission process; the invention optimizes the media processing device to call the video stream processing mechanism of the camera resource under a limited bandwidth, thereby improving the bandwidth utilization.

The above description is only an overview of the technical solutions of the present invention, and the technical means of the present invention can be more clearly understood and can be implemented in accordance with the contents of the specification. Hereinafter, the preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Specific embodiments of the present invention are given in detail by the following examples and the accompanying drawings.

DRAWINGS

The drawings described herein are intended to provide a further understanding of the invention, and are intended to be a part of the invention. In the drawing:

1 is a schematic diagram of a monitoring device for distributing video according to the present invention;

2 is a schematic diagram of a distribution process of monitoring video according to the present invention.

detailed description

The invention will be described in detail below with reference to the drawings in conjunction with the embodiments.

As shown in FIG. 1 , a monitoring video distribution method, a device thereof, and a system thereof, including a monitoring terminal, a monitoring server, a media processing device, a codec device, and a camera; the monitoring terminal An interactive interface for providing a video resource scheduling operation, implementing a video one-click call, a video call, and a video push function; the monitoring terminal includes a headquarters monitoring terminal and a branch monitoring terminal; and the monitoring server is used to complete the comprehensive scheduling Control, video media processing, user registration management, and call routing analysis functions; the media processing device is configured to implement video stream distribution, and the terminal user registration proxy function; the codec device is configured to provide audio and video access functions, and Provide codec function of HD video and video resolution conversion function; the camera is used to realize video image acquisition and transmission.

Preferably, the device accessed by the codec device comprises a high definition or standard definition analog camera, a large screen, a projector, a computer image, and an analog matrix.

Preferably, the monitoring terminal, the media processing device, and the codec device follow a standard SIP protocol REGISTER message, and the monitoring terminal, the media processing device, and the codec device are registered with the monitoring server.

Preferably, the monitoring terminal, the monitoring server, the media processing device, the codec device, and the inter-camera communication adopt a signaling flow and a media stream; the signaling flow is used for transmitting and returning control instructions; and the media stream is used for Transfer monitoring video data information.

Preferably, the signaling flow is implemented by using a SIP message.

Preferably, the media stream is implemented by using an RTP message.

A method for distributing surveillance video, as shown in FIG. 2, includes the following steps:

The video stream communication between the monitoring terminal and the monitoring server, the monitoring server, and the media processing device is established. The headquarters monitoring terminal sends signaling to the monitoring server, and the monitoring server returns the SDP message of the monitoring server paired with the headquarters monitoring terminal; the monitoring server receives the headquarters monitoring. After the terminal sends the signaling, the terminal forwards to the matched media processing device, and the media processing device returns an SDP message of the media processing device paired with the monitoring server;

Establishing a video stream communication between the media processing device and the codec device, the media processing device sends signaling to the matched codec device, and the codec device returns an SDP message of the codec device paired with the media processing device;

Establishing a branch monitoring terminal and monitoring server, monitoring server and media processing device video stream communication, the branch monitoring terminal sends signaling to the monitoring server, and the receiving branch monitoring terminal of the monitoring server sends signaling to the matched media processing device. The media processing device determines to adjust the repeatability of the access device, and the monitoring server returns an SDP message of the monitoring server paired with the branch monitoring terminal; the media processing device returns an SDP message of the media processing device paired with the monitoring server.

Preferably, the video resolution correction is further included; the video resolution correction is used to unify the resolution between the monitoring terminal, the monitoring server, and the codec device.

Preferably, the video resolution correction comprises video scaling; the video scaling is used by the monitoring terminal, and the monitoring server has a resolution smaller than the resolution of the codec device, and the scaling is performed. Decode device video stream resolution.

Preferably, the video resolution correction further includes video padding; the video padding is used for the monitoring terminal, and the monitoring server has a resolution greater than the resolution of the codec device. Filling the video stream free area of the codec device.

The following is described in detail in conjunction with Figure 1 and Figure 2:

As shown in FIG. 2, in the process, the codec device A refers to the codec device in the monitoring point 1 in FIG. 1, and the P1 to P6: the headquarters monitoring terminal and the monitoring server, the monitoring server, and the media processing device follow the standard SIP protocol. The message flow is set up to complete the S1 and S2 video streams. At this time, P1 carries the SDP message of the monitoring terminal, P4 returns the SDP message of the monitoring server paired with the headquarters monitoring terminal, and P2 carries the SDP message of the monitoring server receiving the video stream. The P3 returns the SDP message of the media processing device paired with the monitoring server, and the monitoring server also needs to perform the bridging process, and the video stream of the step S2 is automatically returned to the monitoring terminal through the S1 step. The INVITE message format is as follows:

INVITE sip:00243017@0024.avsp.com;user=phone SIP/2.0

Via: SIP/2.0/UDP172.16.82.240:10000;rport;branch=z9hG4bKBY311ecc6e256344dab2a52450be03d076

Max-Forwards: 70

From:

<sip:00244169@0024.avsp.com>;tag=f075152c29454f338ed57841df7a5764

To:<sip:00243017@0024.avsp.com>

Contact:<sip:172.16.82.240:10000>

Call-ID: aee1341c786f4dfe8648964af4f129f2

CSeq: 18763INVITE

Session-Expires: 1000

Min-SE: 90

Route:<sip:172.16.82.45:5060;lr>

Content-Type: application/sdp

Content-Length: 307

V=0

o=cs-ist 0 0IN IP4 172.16.82.240

s=0

c=IN IP4 172.16.82.240

t=0 0

m=video 62418RTP/AVP 97 120

b=TIAS:4096000

a=recvonly

a=rtpmap:97H264/90000

a=fmtp:97profile-level-id=428016;max-mbps=36000;max-fs=1200

a=rtpmap:120VP8/90000

a=fmtp:120profile-level-id=428016;max-mbps=36000;max-fs=1200

The c attribute and the m attribute in the message include IP and port number information; the a attribute includes an encoding format. It should be understood that the above format, as an example value, varies according to the actual environment, but all follow the definition of a standard SDP message.

P7-P9: The video stream that completes the S3 step is established according to the standard SIP protocol message. At this time, the P7 carries the SDP message of the media processing device, and the P8 returns the SDP message of the codec device paired with the media processing device.

In particular, the video media stream information received by the S3 point will be video-scaled according to the previous signaling negotiation message before returning to the video through the S2 and S1 points. Specifically, the S3 video is subject to the HD video, when S3 If the returned video resolution is greater than the video resolution of S2 and S1, the video reduction processing is performed; when the video resolution returned by S3 is equal to the video resolution size of S2 and S1, it is directly forwarded; when the video resolution returned by S3 is smaller than For the video resolutions of S2 and S1, the video received at point S3 is filled with reference to the center point of the video image of S2, and the area with insufficient filling is supplemented with black, and then the filled video is returned to point S2.

P10 to P15: The video stream that completes the S4 step is established according to the standard SIP protocol message. At this time, the P10 carries the SDP message of the branch monitoring terminal, the P11 transparently transmits the SDP message, and the P12 returns the media processing paired with the branch monitoring terminal. The SDP message of the device, the P12 transparently transmits the SDP message; in the step of P11, the media processing device determines, according to the account of the camera to be viewed, that the camera resources processed and processed are the same, according to the video scaling processing mechanism mentioned above. After the video is processed and then sent to the branch monitoring terminal, if it is determined that there is already a video stream of the same resolution that is scaled and processed before the scaling process, the scaled video stream is directly copied and forwarded to S4 point.

It should be understood that, in the process, the video stream process established by S3 may be preceded by the video stream process established by S1 and S2, and only needs to be modified before the INVITE signaling sequence of the codec device A, so by adjusting the signaling in the process. The order to satisfy the processing of video distribution is also within the scope of this patent.

The invention provides a device for monitoring video distribution, including a monitoring terminal, a monitoring server and a media. The present invention also relates to a method for distributing a monitoring video; the present invention does not establish a video stream to the codec device again when the video of the monitoring terminal monitors the monitoring point. After the video processing process is directly performed from the media processing device, the video stream is distributed to the segment monitoring terminal to save the video stream data, and at the same time, any subsequent monitoring terminal monitors the camera video of the monitoring point, which is processed from the media processing device. Distributing data, breaking the limitation of the number of video calls of the monitoring point, saving the signaling message establishment process and the video streaming process of large data volume; the invention optimizes the video stream of the media processing device to the camera resource under limited bandwidth Call processing mechanisms to increase bandwidth utilization.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention in any way; and those skilled in the art can smoothly implement the present invention as shown in the drawings and described above. However, those skilled in the art can make equivalent changes to the changes, modifications and evolutions made by the above-discussed technical contents without departing from the technical scope of the present invention. At the same time, any changes, modifications and evolutions of any equivalent changes made to the above embodiments in accordance with the essential techniques of the present invention are still within the scope of the technical solutions of the present invention.

Claims (9)

A device for monitoring video distribution, comprising: a monitoring terminal, Monitoring server, media processing device, codec device, camera; The monitoring terminal is configured to provide an interactive interface for a video resource scheduling operation, and implement a video one-click call, a video call, and a video push function; the monitoring terminal includes a headquarters monitoring terminal and a branch monitoring terminal; The monitoring server is configured to perform integrated scheduling control, video media processing, user registration management, and call routing analysis functions; The media processing device is configured to implement video stream distribution and an end user registration proxy function; The codec device is configured to provide an audio and video access function, and provide a codec function of the high definition video, and a video resolution conversion function; The camera is used to implement video image acquisition and transmission functions. A device for monitoring video distribution according to claim 1, wherein the device accessed by the codec device comprises a high definition or standard definition analog camera, a large screen, a projector, a computer image, and an analog matrix. The device for monitoring video distribution according to claim 1, wherein the monitoring terminal, the media processing device, and the codec device follow a standard SIP protocol REGISTER message, the monitoring terminal and the media processing device. And the codec device registers with the monitoring server. The device for distributing surveillance video according to claim 3, wherein: the monitoring terminal, the monitoring server, the media processing device, the codec device, and the inter-camera communication use a signaling stream and a media stream; The signaling stream is used to communicate and return control instructions; the media stream is used to transmit monitoring video data information. The apparatus for distributing surveillance video according to claim 4, wherein the signaling flow is implemented by using a SIP message. A device for monitoring video distribution according to claim 4, wherein the media stream is implemented by using an RTP message. A method for distributing surveillance video according to any one of claims 1 to 6, characterized in that it comprises the following steps: Establish video stream communication between the monitoring terminal of the headquarters and the monitoring server, monitoring server and media processing device. The monitoring terminal of the headquarters sends signaling to the monitoring server, and the monitoring server returns. The SDP message of the monitoring server paired with the monitoring terminal of the headquarters; the receiving monitoring terminal of the monitoring server sends the signaling to the matching media processing device, and the media processing device returns the SDP message of the media processing device paired with the monitoring server; Establishing a video stream communication between the media processing device and the codec device, the media processing device sends signaling to the matched codec device, and the codec device returns an SDP message of the codec device paired with the media processing device; Establishing a branch monitoring terminal and monitoring server, monitoring server and media processing device video stream communication, the branch monitoring terminal sends signaling to the monitoring server, and the receiving branch monitoring terminal of the monitoring server sends signaling to the matched media processing device. The media processing device determines to adjust the repeatability of the access device, and the monitoring server returns an SDP message of the monitoring server paired with the branch monitoring terminal; the media processing device returns an SDP message of the media processing device paired with the monitoring server. The method for distributing monitoring video according to claim 7, further comprising: video resolution correction; wherein said video resolution correction is used to unify said monitoring terminal, said monitoring server, and said The resolution between the codec devices. The method for distributing monitoring video according to claim 8, wherein the video resolution correction comprises video scaling; and the video scaling is used for resolution of the monitoring terminal and the monitoring server. The codec device video stream resolution is scaled when the rate is less than the resolution of the codec device. The method for distributing monitoring video according to claim 8, wherein the video resolution correction further comprises video filling; the video filling is used for the monitoring terminal and the monitoring server. Filling the codec device video stream vacant area when the resolution is greater than the resolution of the codec device.

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