CN112584103A - Method and system for transcoding and clouding large-scale monitoring video - Google Patents
Method and system for transcoding and clouding large-scale monitoring video Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/181—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a plurality of remote sources
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- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
- H04N21/2343—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
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- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/254—Management at additional data server, e.g. shopping server, rights management server
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- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/61—Network physical structure; Signal processing
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- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
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Abstract
The invention discloses a system for monitoring cloud-on-transcoding of a large-scale video, which comprises a CMS center management service, a server and a client, wherein basic parameters of an MDS audio and video stream distribution service, a PAS front-end device access service, an MVC audio and video stream transcoding service and an EGW edge cloud gateway service are set; the camera acquires audio and video data information; the PAS front-end equipment accesses the service and receives and stores the audio and video data information acquired by the camera; the MDS audio and video stream distribution service receives audio and video data information transmitted by PAS front-end equipment access service; the MVC audio and video stream transcoding service receives audio and video data information transmitted by the MDS audio and video stream distribution service, and transcodes the received audio and video data information; the EGW edge cloud gateway service receives audio and video data information transmitted by the MDS audio and video stream distribution service and audio and video data information subjected to transcoding processing; and the cloud platform is used for receiving and storing the packaged audio and video data information transmitted by the cloud gateway service on the edge of the EGW.
Description
Technical Field
The invention relates to the technical field of audio and video transmission, in particular to a method and a system for monitoring cloud-on of video transcoding in a large scale.
Background
In recent years, the construction of an expressway operation monitoring system is actively promoted by various transportation administrative departments, the expressway visual management function is continuously improved, and the service level is continuously improved. In order to better meet the travel demand of people, the accessed video data needs to be transcoded and pushed to a cloud platform constructed by the traffic department in the expressway according to a standard protocol defined by the traffic department.
For example, patent publication No. CN111404966A discloses a data processing method for a highway video monitoring system, which includes: the plurality of cameras respectively transmit the acquired videos to the video convergence processing all-in-one machine in real time; the video aggregation processing all-in-one machine processes the collected multi-channel real-time videos and then sends the processed multi-channel real-time videos to a cloud service system for storage, wherein the cloud service system comprises a plurality of cloud server nodes; the video convergence processing all-in-one machine receives a video playing request of a client, acquires video streams from the cloud service system according to the playing request and sends the video streams to the client for playing. Although the above patent can solve the technical problem of large data delay of the existing highway video monitoring system, it still has the following disadvantages: 1. the existing solution only supports uniform transcoding and cloud uploading at a convergence point of a management center, so that the network bandwidth pressure and the machine room construction complexity of the management center are high; 2. the existing solution is tightly coupled in system structure, audio and video transcoding and code stream pushing cloud-up after transcoding are supported in a single set of service software, and the number of cloud-up supporting paths is limited under the condition that the number of external network outlet addresses is limited; 3. the existing solution has limited code stream access modes of cameras, and limits the types of the accessed cameras.
In order to solve the problem, the invention provides a method and a system for transcoding and clouding a large-scale monitoring video. Through experiments.
Disclosure of Invention
The invention aims to provide a method and a system for transcoding and clouding a large-scale monitoring video, aiming at the defects of the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
a large-scale monitoring video transcoding cloud system comprises a CMS center management service, an MDS audio and video stream distribution service, a PAS front-end equipment access service, an MVC audio and video stream transcoding service, an EGW edge cloud gateway service, a cloud platform and a plurality of cameras; the PAS front-end equipment access service is respectively connected with a plurality of cameras, a CMS center management service and an MDS audio and video stream distribution service, the CMS center management service is connected with an EGW edge upper cloud gateway service, the MDS audio and video stream distribution service is respectively connected with the EGW edge upper cloud gateway service and an MVC audio and video stream transcoding service, and the EGW edge upper cloud gateway service is connected with a cloud platform;
the CMS center management service is used for setting basic parameters of MDS audio and video stream distribution service, PAS front-end equipment access service, MVC audio and video stream transcoding service and EGW edge cloud gateway service;
the plurality of cameras are used for acquiring audio and video data information;
the PAS front-end equipment is accessed to the service and used for receiving and storing audio and video data information acquired by a plurality of cameras and transmitting the stored audio and video data information to the MDS audio and video stream distribution service;
the MDS audio and video stream distribution service is used for receiving audio and video data information transmitted by PAS front-end equipment access service and transmitting the received audio and video data information to MVC audio and video stream transcoding service and EGW edge cloud gateway service;
the MVC audio and video stream transcoding service is used for receiving audio and video data information transmitted by the MDS audio and video stream distribution service, transcoding the received audio and video data information, and transmitting the transcoded audio and video data information to the MDS audio and video stream distribution service;
the EGW edge cloud gateway service is used for receiving audio and video data information transmitted by the MDS audio and video stream distribution service and audio and video data information after transcoding processing, and performing protocol encapsulation on the received audio and video data information after transcoding processing and transmitting the audio and video data information to a cloud platform;
and the cloud platform is used for receiving and storing the audio and video data information which is transmitted by the cloud gateway service on the edge of the EGW and is subjected to encapsulation.
Furthermore, the MDS audio and video stream distribution service is further used for receiving audio and video data information which is transmitted by the MVC audio and video stream transcoding service and is subjected to transcoding processing, and transmitting the audio and video data information which is subjected to transcoding processing to the cloud gateway service on the edge of the EGW.
Further, the access service of the PAS front-end equipment is also used for acquiring basic information of a camera needing to be accessed; the basic information needing to access the camera comprises a network address, a login user name and a password.
Correspondingly, a method for transcoding the large-scale monitoring video to the cloud is also provided, and the method comprises the following steps:
s1, the CMS center management service sets basic parameters of an MDS audio and video stream distribution service, a PAS front-end device access service, an MVC audio and video stream transcoding service and an EGW edge cloud gateway service respectively;
s2, a plurality of cameras acquire audio and video data information;
s3, receiving and storing audio and video data information acquired by a plurality of cameras by the PAS front-end equipment access service, and transmitting the stored audio and video data information to an MDS audio and video stream distribution service;
s4, receiving audio and video data information transmitted by PAS front-end equipment access service by MDS audio and video stream distribution service, and transmitting the received audio and video data information to MVC audio and video stream transcoding service and EGW edge cloud gateway service;
s5, the MVC audio and video stream transcoding service receives audio and video data information transmitted by the MDS audio and video stream distribution service, transcodes the received audio and video data information, and transmits the transcoded audio and video data information to the MDS audio and video stream distribution service;
s6, the EGW edge upper cloud gateway service receives audio and video data information transmitted by the MDS audio and video stream distribution service and audio and video data information after transcoding processing, and performs protocol encapsulation on the received audio and video data information after transcoding processing and transmits the audio and video data information to a cloud platform;
and S7, the cloud platform receives and stores the packaged audio and video data information transmitted by the cloud gateway service on the EGW edge.
Correspondingly, a method for transcoding the large-scale monitoring video to the cloud is also provided, and the method comprises the following steps:
s1, CMS-2 center management service of a sub-center respectively sets MDS-2 audio and video stream distribution service of the sub-center, basic parameters of PAS front-end equipment access service and address information of CMS-1 center management service of a superior management center of the sub-center;
s2, CMS-1 center management service of the management center sets basic parameters of CMS-2 center management service, MDS-1 audio and video stream distribution service, MVC audio and video stream transcoding service and EGW edge cloud gateway service respectively;
s3, the camera acquires audio and video data information;
s4, the PAS front-end equipment of the branch center is accessed into the service to receive and store the audio and video data information acquired by the camera, and the stored audio and video data information is transmitted to the MDS-2 audio and video stream distribution service of the branch center;
s5, receiving audio and video data information transmitted by PAS front-end equipment access service of the branch center by MDS-2 audio and video stream distribution service of the branch center, and transmitting the received audio and video data information to MDS-1 audio and video stream distribution service of a management center;
s6, receiving audio and video data information transmitted by MDS-2 audio and video stream distribution services of the sub-center by an MDS-1 audio and video stream distribution service of the management center, and transmitting the received audio and video data information to an MVC audio and video stream coding service of the management center and an EGW edge cloud gateway service of a management board platform;
s7, an MVC audio and video stream transcoding service of the management center receives audio and video data information transmitted by an MDS-1 audio and video stream distribution service of the management center, transcodes the received audio and video data information, and transmits the transcoded audio and video data information to the MDS-1 audio and video stream distribution service of the management center;
s8, receiving audio and video data information transmitted by an MDS-1 audio and video stream distribution service of a management center and audio and video data information subjected to transcoding by an EGW edge cloud gateway service of the management center, and performing protocol encapsulation on the received audio and video data information subjected to transcoding to transmit the audio and video data information to a cloud platform of the management center;
and S9, the cloud platform of the management center receives and stores the packaged audio and video data information transmitted by the cloud gateway service on the EGW edge of the management center.
Further, step S6 is preceded by actively uploading the camera information accessed by the sub-center to the management center through a data synchronization protocol according to the address information of the CMS-1 center management service of the superior management center of the sub-center configured by the CMS-2 center management service of the sub-center;
the CMS-1 center management service of the management center establishes a topological network relationship of the CMS-2 center management service in which all the sub-center cameras are located according to the camera information actively uploaded by the sub-centers.
Further, the step S7 is specifically:
the MVC audio and video stream transcoding service of the management center inquires MDS-1 audio and video stream distribution services, PAS front-end equipment access services and MDS-1 audio and video stream distribution services of all the sub-centers according to a topological network relation established by CMS-2 center management services of the management center, carries out audio and video data information request on the MDS-1 audio and video stream distribution services of the management center by the MVC audio and video stream transcoding service of the management center according to the inquired information, and transmits the MDS-2 audio and video stream distribution services and the PAS front-end equipment access services of all the sub-centers to the MDS-1 audio and video stream distribution services of the management center;
the MDS-1 audio and video stream distribution service of the management center carries out audio and video data information requests, and transmits addresses of PAS front-end equipment access services of the sub-center to the MDS-2 audio and video stream distribution service of the sub-center; the MDS-2 audio and video stream distribution service of the sub-center directly accesses the service to PAS front-end equipment of the sub-center to request, and audio and video data information is obtained;
and the audio and video data information is transmitted to the MVC audio and video stream transcoding service in a step-by-step uploading mode, so that the audio and video data information is transparently transmitted.
Further, the step S8 is specifically:
inquiring MDS-1 audio and video stream distribution service and MVC audio and video stream transcoding service of the management center associated with the transcoded audio and video data information by using a cloud gateway service on the edge of the EGW of the management center;
the EGW edge cloud gateway service of the management center requests the audio and video data information subjected to transcoding processing from the MDS-1 audio and video stream distribution service of the management center according to the query information, the MDS-1 audio and video stream distribution service of the management center requests the audio and video data information subjected to transcoding processing from the MVC audio and video stream transcoding service to complete the distribution of the audio and video data information subjected to transcoding processing, and finally the EGW edge cloud gateway service of the management center encapsulates the received audio and video data information subjected to transcoding processing into a format supported by a cloud platform.
Correspondingly, a method for transcoding the large-scale monitoring video to the cloud is also provided, and the method comprises the following steps:
s1, CMS-2 center management services of a sub-center respectively set basic parameters of MDS-2 audio and video stream distribution services, PAS front-end equipment access services, MVC-2 audio and video stream transcoding services and EGW-2 edge cloud gateway services of the sub-center and address information of CMS-1 center management services of a superior management center of the sub-center;
s2, CMS-1 center management services of a management center respectively set basic parameters of CMS-2 center management services, MDS-1 audio and video stream distribution services, MVC-1 audio and video stream transcoding services and EGW-1 edge cloud gateway services;
s3, the camera acquires audio and video data information;
s4, the PAS front-end equipment of the branch center is accessed into the service to receive and store the audio and video data information acquired by the camera, and the stored audio and video data information is transmitted to the MDS-2 audio and video stream distribution service of the branch center;
s5, receiving audio and video data information transmitted by PAS front-end equipment access service of the sub center by MDS-2 audio and video stream distribution service of the sub center, and transmitting the received audio and video data information to MVC-2 audio and video stream transcoding service of the sub center, EGW-2 edge cloud gateway service and MDS-1 audio and video stream distribution service of a management center;
s6, receiving audio and video data information transmitted by the MDS-2 audio and video stream distribution service by the MVC-2 audio and video stream transcoding service of the branch center, transcoding the received audio and video data information, and transmitting the transcoded audio and video data information to the MDS-2 audio and video stream distribution service;
s7, receiving audio and video data information transmitted by the MDS-2 audio and video stream distribution service and audio and video data information subjected to transcoding processing by an EGW-2 edge upper cloud gateway service of the sub-center, and performing protocol encapsulation on the received audio and video data information subjected to transcoding processing and transmitting the audio and video data information to a cloud platform;
and S8, the cloud platform receives and stores the packaged audio and video data information transmitted by the cloud gateway service on the edge of the EGW-2 of the sub-center.
Further, after the step S8, the method further includes:
s9, receiving audio and video data information transmitted by MDS-2 audio and video stream distribution services of the sub-center by MDS-1 audio and video stream distribution services of the management center, and transmitting the received audio and video data information to MVC-1 audio and video stream transcoding services of the management center and/or cloud gateway services on an EGW-1 edge of a management board platform;
s10, receiving audio and video data information transmitted by an MDS-1 audio and video stream distribution service of a management center by an MVC-1 audio and video stream transcoding service of the management center, transcoding the received audio and video data information, and transmitting the transcoded audio and video data information to the MDS-1 audio and video stream distribution service of the management center;
s11, receiving audio and video data information transmitted by an MDS-1 audio and video stream distribution service of a management center and audio and video data information after transcoding processing by an EGW-1 edge cloud gateway service of the management center, and performing protocol encapsulation on the received audio and video data information after transcoding processing and transmitting the audio and video data information to a cloud platform of the management center;
and S12, the cloud platform of the management center receives and stores the packaged audio and video data information transmitted by the cloud gateway service on the edge of the EGW-1 of the management center.
Compared with the prior art, the invention has the beneficial effects that:
1. the design scheme defines the front-end access adapter service, ensures the diversity of the access of the camera, supports the access of different code streams and ensures the consistency of the code streams entering the system;
2. in the design scheme, the transcoding service and the cloud service are split and processed, and different sub-services are provided. The cloud-up sub-service and the transcoding sub-service can be deployed in a one-to-many manner, and can also support cloud-up operation under the condition that a user can provide fewer external network addresses;
3. the cloud scene of diversified transcoding is supported, namely distributed cloud of transcoding can be supported, centralized cloud of transcoding also can be supported, transcoding service can be deployed to a site closer to equipment to reduce code rate, data with low code rate are uploaded to a center to be converged and then are uniformly uploaded to the cloud, and the pressure of a transmission network of the whole system is reduced.
Drawings
FIG. 1 is a cloud architecture diagram on a single-level management structure according to an embodiment;
FIG. 2 is a cloud architecture diagram of a multi-hierarchy management structure according to an embodiment;
fig. 3 is a schematic data transmission diagram of a method for transcoding a large-scale surveillance video to a cloud according to the second embodiment;
fig. 4 is a schematic data transmission diagram of a method for transcoding a large-scale surveillance video to a cloud according to the third embodiment;
fig. 5 is a schematic data transmission diagram of a method for transcoding a large-scale surveillance video to a cloud according to the fourth embodiment.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
The invention aims to provide a method and a system for transcoding and clouding a large-scale monitoring video, aiming at the defects of the prior art.
Example one
The system for transcoding the large-scale monitoring video to the cloud can be a cloud on a single-layer management structure or a cloud on a multi-layer management structure.
FIG. 1 is a cloud architecture diagram of a single-level management structure, which includes only one management layer; fig. 2 is a cloud structure diagram of a multi-level management structure, which includes a distribution center layer and a management center layer. Therefore, the structural layer provided in this embodiment can be divided into multiple layers according to practical situations, and is not limited to the number of layers mentioned in this embodiment.
Before the system is used, each device in the system needs to be deployed, specifically:
preparation before construction: deploying a network environment, and planning the number of proper servers according to the number of accessed audio and video circuits;
deployment of a software platform: deploying a suitable computer software service product on the server according to the project scheme;
platform data configuration: logging in a system platform, configuring basic parameters of accessed audio and video data, configuring basic parameters of video transcoding and configuring basic parameters of a cloud server;
video transcoding and cloud adding: and starting an automatic process of cloud uploading video transcoding on the basis of platform data configuration.
A large-scale monitoring video transcoding cloud system comprises a CMS center management service, an MDS audio and video stream distribution service, a PAS front-end equipment access service, an MVC audio and video stream transcoding service, an EGW edge cloud gateway service, a cloud platform and a plurality of cameras; the PAS front-end equipment access service is respectively connected with a plurality of cameras, a CMS center management service and an MDS audio and video stream distribution service, the CMS center management service is connected with an EGW edge cloud gateway service, the MDS audio and video stream distribution service is respectively connected with the EGW edge cloud gateway service and an MVC audio and video stream transcoding service, and the EGW edge cloud gateway service is connected with a cloud platform.
And the CMS center management service is used for setting basic parameters of MDS audio and video stream distribution service, PAS front-end equipment access service, MVC audio and video stream transcoding service and EGW edge cloud gateway service.
The CMS center management service supports the data aggregation of a superior platform to a subordinate platform, supports the signaling interaction of the superior platform and the subordinate platform, and performs unified management on the sub-service of the current level.
The plurality of cameras are used for acquiring audio and video data information;
one or more cameras are installed in each area, each camera can record video data information of the celebration area, and the recorded video data information is transmitted to PAS front-end equipment to access service.
The PAS front-end equipment is accessed to the service and used for receiving and storing audio and video data information acquired by a plurality of cameras and transmitting the stored audio and video data information to the MDS audio and video stream distribution service;
one PAS front-end equipment can be accessed to one camera under the access service, and can also be accessed to a plurality of cameras, and the specific access can be set according to the actual situation.
And the PAS front-end equipment access service supports interaction with diversified equipment, and equipment access and original audio and video code stream access are completed.
The access service of the PAS front-end equipment is also used for acquiring basic information of a camera to be accessed; the basic information needing to access the camera comprises a network address, a login user name and a password.
The MDS audio and video stream distribution service is used for receiving audio and video data information (namely an original audio and video code stream) transmitted by the PAS front-end equipment access service and transmitting the received original audio and video code stream to MVC audio and video stream coding service and/or EGW edge cloud gateway service;
the MDS audio and video stream distribution service supports the original audio and video code stream of the camera to be distributed to the transcoding service MVC for transcoding, and simultaneously supports the original code stream and the transcoded code stream to be distributed to the upper aggregation platform.
After the PAS front-end device access service uploads the stored original audio and video code stream to the MDS audio and video stream distribution service, the MDS audio and video stream distribution service can transmit the original audio and video code stream to the MVC audio and video stream coding service and can also transmit the original audio and video code stream to the cloud gateway service on the edge of the EGW for storage.
The MVC audio and video stream transcoding service is used for receiving audio and video data information transmitted by the MDS audio and video stream distribution service, transcoding the received audio and video data information, and transmitting the transcoded audio and video data information to the MDS audio and video stream distribution service;
the MVC audio and video stream transcoding service supports the conversion of an original code stream into transcoding code streams with different low resolutions, and the transcoded code streams are distributed out through the MDS audio and video stream distribution service.
When the MVC audio and video stream transcoding service receives an original audio and video stream transmitted by the MDS audio and video stream distribution service, the MVC audio and video stream transcoding service converts a high-resolution video of the original audio and video stream into a low-resolution video, transmits the converted low-resolution video back to the MDS audio and video stream distribution service, and then transmits the received low-resolution video to the cloud gateway service on the edge of the EGW.
The EGW edge cloud gateway service is used for receiving audio and video data information transmitted by the MDS audio and video stream distribution service and audio and video data information after transcoding processing, and performing protocol encapsulation on the received audio and video data information after transcoding processing and transmitting the audio and video data information to a cloud platform;
and the EGW edge cloud gateway service supports protocol encapsulation and pushing of the transcoded code stream to the cloud platform.
And the cloud platform is used for receiving and storing the code stream transmitted by the cloud gateway service on the edge of the EGW after packaging.
Compared with the prior art, the beneficial effect of this embodiment is:
1. the design scheme defines the front-end access adapter service, ensures the diversity of the access of the camera, supports the access of different code streams and ensures the consistency of the code streams entering the system;
2. in the design scheme, the transcoding service and the cloud service are split and processed, and different sub-services are provided. The cloud-up sub-service and the transcoding sub-service can be deployed in a one-to-many manner, and can also support cloud-up operation under the condition that a user can provide fewer external network addresses;
3. the cloud scene of diversified transcoding is supported, namely distributed cloud of transcoding can be supported, centralized cloud of transcoding also can be supported, transcoding service can be deployed to a site closer to equipment to reduce code rate, data with low code rate are uploaded to a center to be converged and then are uniformly uploaded to the cloud, and the pressure of a transmission network of the whole system is reduced.
Example two
The embodiment provides a method for transcoding a large-scale surveillance video to cloud, and fig. 3 is a schematic diagram of data transmission; the present embodiment is described by taking a single-level management structure as an example.
A method for transcoding a large-scale monitoring video to cloud comprises the following steps:
s1, the CMS center management service sets basic parameters of an MDS audio and video stream distribution service, a PAS front-end device access service, an MVC audio and video stream transcoding service and an EGW edge cloud gateway service respectively;
a user logs in a system platform through a management client and configures basic information of each sub-service in the current system;
s2, a plurality of cameras acquire audio and video data information;
the plurality of cameras are all accessed into PAS front-end equipment access service, and the PAS front-end equipment access service sends a control instruction.
And each camera can acquire corresponding audio and video data and transmit the acquired original audio and video code stream to PAS front-end equipment for access service.
S3, receiving and storing audio and video data information acquired by a plurality of cameras by the PAS front-end equipment access service, and transmitting the stored audio and video data information to an MDS audio and video stream distribution service;
the PAS front-end equipment access service sends a control instruction by a CMS center management service, and the CMS center management service controls the PAS front-end equipment access service to upload the acquired/stored original audio and video code stream to an MDS audio and video stream distribution service.
The user configures the managed front-end camera to the PAS front-end equipment access service, and the PAS front-end equipment access service performs unified management on the camera. The access service of the camera to the PAS front-end equipment can be deployed in multiple ways according to different manufacturers, different protocols and different access modes, so that the support of the access of various equipment is ensured;
the PAS front-end equipment access service is also used for: collecting basic information of a camera needing to be accessed, wherein the basic information comprises a network address and a login equipment user name/password; and the collected basic information is input into PAS front-end equipment access service accessed by the camera.
S4, receiving audio and video data information transmitted by PAS front-end equipment access service by MDS audio and video stream distribution service, and transmitting the received audio and video data information to MVC audio and video stream coding service and/or EGW edge cloud gateway service;
the user configures the camera information which is recorded into the PAS front-end equipment access service to the MDS audio and video stream distribution service through the CMS center management service, so that the MDS audio and video stream distribution service can acquire the code stream of the front-end network camera through the specific PAS front-end equipment access service.
It should be noted that, in this embodiment, multiple MDS audio/video stream distribution services may be deployed in the platform according to the number of accessed audios/videos, so as to achieve multi-path number distribution of the code stream.
S5, the MVC audio and video stream transcoding service receives audio and video data information transmitted by the MDS audio and video stream distribution service, transcodes the received audio and video data information, and transmits the transcoded audio and video data information to the MDS audio and video stream distribution service;
and data is supposed to be transmitted between the MVC audio and video stream transcoding service and the MDS audio and video stream distribution service.
A user establishes an incidence relation between camera information which is recorded into PAS front-end equipment access service and a virtual transcoding channel supported by MVC audio/video stream transcoding service through CMS center management service, so that the MVC audio/video stream transcoding service can acquire an original code stream of a camera through MDS audio/video stream distribution service; once the association relation is configured successfully, the MVC audio/video stream transcoding service starts transcoding immediately to complete the conversion from the high-resolution video to the low-resolution video.
S6, the EGW edge upper cloud gateway service receives audio and video data information transmitted by the MDS audio and video stream distribution service and audio and video data information after transcoding processing, and performs protocol encapsulation on the received audio and video data information after transcoding processing and transmits the audio and video data information to a cloud platform;
a user configures the camera information which is recorded into the PAS front-end equipment access service to an EGW edge upper cloud gateway service through a CMS center management service, and the EGW edge upper cloud gateway service inquires the audio and video service through an associated MDS audio and video stream distribution service and an MVC audio and video stream transcoding service according to the configured audio and video channel information in the CMS center management service; and the EGW edge cloud gateway service sequentially requests the MDS audio and video stream distribution service to transcode the code stream according to the query information, the MDS audio and video stream distribution service then requests the MVC audio and video stream transcoding service to transcode the code stream, the distribution of the transcoded code stream is completed, and finally the transcoded code stream is packaged into a format supported by a cloud platform and is uniformly distributed to the cloud.
And S7, the cloud platform receives and stores the packaged audio and video data information transmitted by the cloud gateway service on the EGW edge.
Compared with the prior art, the beneficial effect of this embodiment is:
1. the design scheme defines the front-end access adapter service, ensures the diversity of the access of the camera, supports the access of different code streams and ensures the consistency of the code streams entering the system;
2. in the design scheme, the transcoding service and the cloud service are split and processed, and different sub-services are provided. The cloud-up sub-service and the transcoding sub-service can be deployed in a one-to-many manner, and can also support cloud-up operation under the condition that a user can provide fewer external network addresses;
3. the cloud scene of diversified transcoding is supported, namely distributed cloud of transcoding can be supported, centralized cloud of transcoding also can be supported, transcoding service can be deployed to a site closer to equipment to reduce code rate, data with low code rate are uploaded to a center to be converged and then are uniformly uploaded to the cloud, and the pressure of a transmission network of the whole system is reduced.
EXAMPLE III
The difference between the method for transcoding the large-scale monitoring video to the cloud and the second embodiment is as follows:
the present embodiment is described by taking a multi-level management structure as an example. Fig. 4 is a schematic diagram of data transmission.
The method specifically comprises the following steps:
s1, CMS-2 center management service of a sub-center respectively sets MDS-2 audio and video stream distribution service of the sub-center, basic parameters of PAS front-end equipment access service and address information of CMS-1 center management service of a superior management center of the sub-center;
s2, CMS-1 center management service of the management center sets basic parameters of CMS-2 center management service, MDS-1 audio and video stream distribution service, MVC audio and video stream transcoding service and EGW edge cloud gateway service respectively;
and a user of the CMS-1 of the management center convergence platform logs in the system platform through the management client and configures basic information of each sub-service in the current system.
And the user of the branch center N configures the managed front-end equipment to the equipment access PAS to perform unified management on the cameras. The access PAS of the camera can be deployed in a plurality of ways according to different manufacturers, different protocols and different access modes, so that the support of the access of various devices is ensured;
collecting basic information of a camera needing to be accessed: network address, login device username/password;
and recording the collected camera information into the equipment access PAS.
As can be seen from fig. 4, N cameras are involved in the sub-center, but each camera is connected to a respective PAS, each controlled by the CMS of the respective sub-center, so that the sub-center can be connected to a plurality of CMSs, MDSs, PASs; the CMSs of all the sub-centers are controlled by one CMS of the management center, and data information in the MDSs of all the sub-centers is uploaded to one MDS of the management center to be managed uniformly.
S3, the camera acquires audio and video data information;
and each camera is accessed into the corresponding PAS, and the PAS sends a control command.
S4, the PAS front-end equipment of the branch center is accessed into the service to receive and store the audio and video data information acquired by the camera, and the stored audio and video data information is transmitted to the MDS-2 audio and video stream distribution service of the branch center;
s5, receiving audio and video data information transmitted by PAS front-end equipment access service of the branch center by MDS-2 audio and video stream distribution service of the branch center, and transmitting the received audio and video data information to MDS-1 audio and video stream distribution service of a management center;
and the user of the sub-center N configures the camera information which is already recorded in the PAS to the MDS-2 through the CMS-2, so that the MDS-2 can acquire the code stream of the front-end network camera through the specific PAS according to the number of the accessed audios and videos.
The center management service CMS-2 of the sub-center N actively uploads the camera information accessed at the current level to the superior platform through a data synchronization protocol according to the configured center management service CMS-1 address information of the superior convergence platform (management center).
S6, receiving audio and video data information transmitted by MDS-2 audio and video stream distribution services of the sub-center by MDS-1 audio and video stream distribution services of the management center, and transmitting the received audio and video data information to MVC audio and video stream coding services of the management center and/or cloud gateway services on the edge of an EGW of the management board platform;
and the central management service CMS-1 of the management center establishes a topological network relationship of the central management service which can be normally routed to all the cameras accessed from the subordinate according to all the converged camera information.
S7, an MVC audio and video stream transcoding service of the management center receives audio and video data information transmitted by an MDS-1 audio and video stream distribution service of the management center, transcodes the received audio and video data information, and transmits the transcoded audio and video data information to the MDS-1 audio and video stream distribution service of the management center;
a user of a management center establishes an incidence relation between the collected camera information and a virtual transcoding channel supported by transcoding service MVC, the transcoding service MVC inquires all cascaded stream distribution service set lists < MDS-1, MDS-2 and PAS > according to an equipment network topological relation established by central management service CMS-1, transcoding service MVC makes an original code stream request to the distribution service MDS-1 according to the set list information, and transmits a topological structure < MDS-2 and PAS > to the distribution service MDS-1; the distribution service MDS-1 carries out a flow request to the MDS-2 according to the topological structure and transmits the PAS service address to the MDS-2 service; MDS-2 directly requests PAS service to obtain an original code stream; finally, the original code stream is sent to the MVC service in a step-by-step uploading mode, and the transparent transmission of the original code stream is completed; the MVC service completes the conversion from the high-resolution video to the low-resolution video according to the original source code.
S8, receiving audio and video data information transmitted by an MDS-1 audio and video stream distribution service of a management center and audio and video data information subjected to transcoding by an EGW edge cloud gateway service of the management center, and performing protocol encapsulation on the received audio and video data information subjected to transcoding to transmit the audio and video data information to a cloud platform of the management center;
a user of a management center configures the camera information gathered by the CMS-1 service to an EGW (edge cloud gateway), and the EGW queries the audio and video through a platform according to the configured channel information and through an associated distribution server MDS-1 and a transcoding service MVC; and the edge cloud gateway service EGW requests the MDS-1 service to transcode the code stream in sequence according to the query information, the MDS-1 service requests the MVC service to transcode the code stream, the distribution of the transcoded code stream is completed, and finally the transcoded code stream is packaged into a format supported by the cloud platform and is uniformly uploaded to the cloud.
And S9, the cloud platform of the management center receives and stores the packaged audio and video data information transmitted by the cloud gateway service on the EGW edge of the management center.
Compared with the prior art, the beneficial effect of this embodiment is:
1. the design scheme defines the front-end access adapter service, ensures the diversity of the access of the camera, supports the access of different code streams and ensures the consistency of the code streams entering the system;
2. in the design scheme, the transcoding service and the cloud service are split and processed, and different sub-services are provided. The cloud-up sub-service and the transcoding sub-service can be deployed in a one-to-many manner, and can also support cloud-up operation under the condition that a user can provide fewer external network addresses;
3. the cloud scene of diversified transcoding is supported, namely distributed cloud of transcoding can be supported, centralized cloud of transcoding also can be supported, transcoding service can be deployed to a site closer to equipment to reduce code rate, data with low code rate are uploaded to a center to be converged and then are uniformly uploaded to the cloud, and the pressure of a transmission network of the whole system is reduced.
Example four
The difference between the method for transcoding the large-scale monitoring video to the cloud and the second embodiment is as follows:
the present embodiment is described by taking a multi-level management structure as an example. Fig. 5 is a schematic diagram of data transmission.
Correspondingly, a method for transcoding the large-scale monitoring video to the cloud is also provided, and the method comprises the following steps:
s1, CMS-2 center management services of a sub-center respectively set basic parameters of MDS-2 audio and video stream distribution services, PAS front-end equipment access services, MVC-2 audio and video stream transcoding services and EGW-2 edge cloud gateway services of the sub-center and address information of CMS-1 center management services of a superior management center of the sub-center;
s2, CMS-1 center management services of a management center respectively set basic parameters of CMS-2 center management services, MDS-1 audio and video stream distribution services, MVC-1 audio and video stream transcoding services and EGW-1 edge cloud gateway services;
s3, the camera acquires audio and video data;
s4, the PAS front-end equipment of the branch center is accessed into the service to receive and store the audio and video data information acquired by the camera, and the stored audio and video data information is transmitted to the MDS-2 audio and video stream distribution service of the branch center;
s5, receiving audio and video data information transmitted by PAS front-end equipment access service of the sub center by MDS-2 audio and video stream distribution service of the sub center, and transmitting the received audio and video data information to MVC-2 audio and video stream transcoding service of the sub center, EGW-2 edge cloud gateway service and MDS-1 audio and video stream distribution service of a management center;
s6, receiving audio and video data information transmitted by the MDS-2 audio and video stream distribution service by the MVC-2 audio and video stream transcoding service of the branch center, transcoding the received audio and video data information, and transmitting the transcoded audio and video data information to the MDS-2 audio and video stream distribution service;
s7, receiving audio and video data information transmitted by the MDS-2 audio and video stream distribution service and audio and video data information subjected to transcoding processing by an EGW-2 edge upper cloud gateway service of the sub-center, and performing protocol encapsulation on the received audio and video data information subjected to transcoding processing and transmitting the audio and video data information to a cloud platform;
and S8, the cloud platform receives and stores the packaged audio and video data information transmitted by the cloud gateway service on the edge of the EGW-2 of the sub-center.
S9, receiving audio and video data information transmitted by MDS-2 audio and video stream distribution services of the sub-center by MDS-1 audio and video stream distribution services of the management center, and transmitting the received audio and video data information to MVC-1 audio and video stream transcoding services of the management center and/or cloud gateway services on an EGW-1 edge of a management board platform;
s10, receiving audio and video data information transmitted by an MDS-1 audio and video stream distribution service of a management center by an MVC-1 audio and video stream transcoding service of the management center, transcoding the received audio and video data information, and transmitting the transcoded audio and video data information to the MDS-1 audio and video stream distribution service of the management center;
s11, receiving audio and video data information transmitted by an MDS-1 audio and video stream distribution service of a management center and audio and video data information after transcoding processing by an EGW-1 edge cloud gateway service of the management center, and performing protocol encapsulation on the received audio and video data information after transcoding processing and transmitting the audio and video data information to a cloud platform of the management center;
and S12, the cloud platform of the management center receives and stores the packaged audio and video data information transmitted by the cloud gateway service on the edge of the EGW-1 of the management center.
It should be noted that the implementation manners of steps S1-S12 are similar to those in the second embodiment and the third embodiment, and are not repeated here.
As can be seen from fig. 5, the sub-center is provided with not only the CMS, PAS, and MDS but also the MVC and EGW services, and therefore, the data uploaded to the cloud platform may be uploaded through the EGW service of the sub-center or the EGW service of the management center.
Compared with the prior art, the embodiment has the following beneficial effects:
1. the automatic construction of the network topology relationship of the equipment access between the service of the sub-center and the management center can be promoted to the construction of the network topology relationship of the equipment access between the multi-level relationships, namely, the topology inquiry from the center management service CMS-N of the upper-level convergent point to the center management service CMS of the lowest level where the direct access equipment is located can be supported;
2. according to a topological relation network automatically established by the platform, the address of the distribution service MDS supported by each level of platform, the distribution service MDS of the lowest layer where the direct access equipment is located and the equipment access service PAS are inquired, so that the step-by-step uploading of the original code stream can be completed through a self-defined stream transmission protocol;
3. through two technical characteristics of proper network construction, the video transcoding cloud service can be completed at any level, and the effect of distributed transcoding cloud service is achieved.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A large-scale monitoring video transcoding cloud system is characterized by comprising CMS center management service, MDS audio and video stream distribution service, PAS front-end equipment access service, MVC audio and video stream transcoding service, EGW edge cloud gateway service, a cloud platform and a plurality of cameras; the PAS front-end equipment access service is respectively connected with a plurality of cameras, a CMS center management service and an MDS audio and video stream distribution service, the CMS center management service is connected with an EGW edge upper cloud gateway service, the MDS audio and video stream distribution service is respectively connected with the EGW edge upper cloud gateway service and an MVC audio and video stream transcoding service, and the EGW edge upper cloud gateway service is connected with a cloud platform;
the CMS center management service is used for setting basic parameters of MDS audio and video stream distribution service, PAS front-end equipment access service, MVC audio and video stream transcoding service and EGW edge cloud gateway service;
the plurality of cameras are used for acquiring audio and video data information;
the PAS front-end equipment is accessed to the service and used for receiving and storing audio and video data information acquired by a plurality of cameras and transmitting the stored audio and video data information to the MDS audio and video stream distribution service;
the MDS audio and video stream distribution service is used for receiving audio and video data information transmitted by PAS front-end equipment access service and transmitting the received audio and video data information to MVC audio and video stream transcoding service and EGW edge cloud gateway service;
the MVC audio and video stream transcoding service is used for receiving audio and video data information transmitted by the MDS audio and video stream distribution service, transcoding the received audio and video data information, and transmitting the transcoded audio and video data information to the MDS audio and video stream distribution service;
the EGW edge cloud gateway service is used for receiving audio and video data information transmitted by the MDS audio and video stream distribution service and audio and video data information after transcoding processing, and performing protocol encapsulation on the received audio and video data information after transcoding processing and transmitting the audio and video data information to a cloud platform;
and the cloud platform is used for receiving and storing the audio and video data information which is transmitted by the cloud gateway service on the edge of the EGW and is subjected to encapsulation.
2. The system for large-scale monitoring of video transcoding to cloud as claimed in claim 1, wherein the MDS audio/video stream distribution service is further configured to receive transcoded audio/video data information transmitted by the MVC audio/video stream transcoding service, and transmit the transcoded audio/video data information to the EGW edge cloud gateway service.
3. The system for transcoding cloud of large scale surveillance video according to claim 1, wherein the PAS front-end access service is further configured to obtain basic information of a camera to be accessed; the basic information needing to access the camera comprises a network address, a login user name and a password.
4. A method for transcoding and clouding large-scale monitoring videos is characterized by comprising the following steps:
s1, the CMS center management service sets basic parameters of an MDS audio and video stream distribution service, a PAS front-end device access service, an MVC audio and video stream transcoding service and an EGW edge cloud gateway service respectively;
s2, a plurality of cameras acquire audio and video data information;
s3, receiving and storing audio and video data information acquired by a plurality of cameras by the PAS front-end equipment access service, and transmitting the stored audio and video data information to an MDS audio and video stream distribution service;
s4, receiving audio and video data information transmitted by PAS front-end equipment access service by MDS audio and video stream distribution service, and transmitting the received audio and video data information to MVC audio and video stream transcoding service and EGW edge cloud gateway service;
s5, the MVC audio and video stream transcoding service receives audio and video data information transmitted by the MDS audio and video stream distribution service, transcodes the received audio and video data information, and transmits the transcoded audio and video data information to the MDS audio and video stream distribution service;
s6, the EGW edge upper cloud gateway service receives audio and video data information transmitted by the MDS audio and video stream distribution service and audio and video data information after transcoding processing, and performs protocol encapsulation on the received audio and video data information after transcoding processing and transmits the audio and video data information to a cloud platform;
and S7, the cloud platform receives and stores the packaged audio and video data information transmitted by the cloud gateway service on the EGW edge.
5. A method for transcoding and clouding large-scale monitoring videos is characterized by comprising the following steps:
s1, CMS-2 center management service of a sub-center respectively sets MDS-2 audio and video stream distribution service of the sub-center, basic parameters of PAS front-end equipment access service and address information of CMS-1 center management service of a superior management center of the sub-center;
s2, CMS-1 center management service of the management center sets basic parameters of CMS-2 center management service, MDS-1 audio and video stream distribution service, MVC audio and video stream transcoding service and EGW edge cloud gateway service respectively;
s3, the camera acquires audio and video data information;
s4, the PAS front-end equipment of the branch center is accessed into the service to receive and store the audio and video data information acquired by the camera, and the stored audio and video data information is transmitted to the MDS-2 audio and video stream distribution service of the branch center;
s5, receiving audio and video data information transmitted by PAS front-end equipment access service of the branch center by MDS-2 audio and video stream distribution service of the branch center, and transmitting the received audio and video data information to MDS-1 audio and video stream distribution service of a management center;
s6, receiving audio and video data information transmitted by MDS-2 audio and video stream distribution services of the sub-center by an MDS-1 audio and video stream distribution service of the management center, and transmitting the received audio and video data information to an MVC audio and video stream coding service of the management center and an EGW edge cloud gateway service of a management board platform;
s7, an MVC audio and video stream transcoding service of the management center receives audio and video data information transmitted by an MDS-1 audio and video stream distribution service of the management center, transcodes the received audio and video data information, and transmits the transcoded audio and video data information to the MDS-1 audio and video stream distribution service of the management center;
s8, receiving audio and video data information transmitted by an MDS-1 audio and video stream distribution service of a management center and audio and video data information subjected to transcoding by an EGW edge cloud gateway service of the management center, and performing protocol encapsulation on the received audio and video data information subjected to transcoding to transmit the audio and video data information to a cloud platform of the management center;
and S9, the cloud platform of the management center receives and stores the packaged audio and video data information transmitted by the cloud gateway service on the EGW edge of the management center.
6. The method for transcoding and clouding a large-scale surveillance video according to claim 5, wherein the step S6 is preceded by actively uploading the camera information accessed by the sub-center to the management center through a data synchronization protocol according to the address information of the CMS-1 center management service of the upper management center of the sub-center configured by the CMS-2 center management service of the sub-center;
the CMS-1 center management service of the management center establishes a topological network relationship of the CMS-2 center management service in which all the sub-center cameras are located according to the camera information actively uploaded by the sub-centers.
7. The method for transcoding the cloud of the large-scale surveillance video according to claim 6, wherein the step S7 specifically comprises:
the MVC audio and video stream transcoding service of the management center inquires MDS-1 audio and video stream distribution services, PAS front-end equipment access services and MDS-1 audio and video stream distribution services of all the sub-centers according to a topological network relation established by CMS-2 center management services of the management center, carries out audio and video data information request on the MDS-1 audio and video stream distribution services of the management center by the MVC audio and video stream transcoding service of the management center according to the inquired information, and transmits the MDS-2 audio and video stream distribution services and the PAS front-end equipment access services of all the sub-centers to the MDS-1 audio and video stream distribution services of the management center;
the MDS-1 audio and video stream distribution service of the management center carries out audio and video data information requests, and transmits addresses of PAS front-end equipment access services of the sub-center to the MDS-2 audio and video stream distribution service of the sub-center; the MDS-2 audio and video stream distribution service of the sub-center directly accesses the service to PAS front-end equipment of the sub-center to request, and audio and video data information is obtained;
and the audio and video data information is transmitted to the MVC audio and video stream transcoding service in a step-by-step uploading mode, so that the audio and video data information is transparently transmitted.
8. The method for transcoding the cloud of the large-scale surveillance video according to claim 7, wherein the step S8 specifically comprises:
inquiring MDS-1 audio and video stream distribution service and MVC audio and video stream transcoding service of the management center associated with the transcoded audio and video data information by using a cloud gateway service on the edge of the EGW of the management center;
the EGW edge cloud gateway service of the management center requests the audio and video data information subjected to transcoding processing from the MDS-1 audio and video stream distribution service of the management center according to the query information, the MDS-1 audio and video stream distribution service of the management center requests the audio and video data information subjected to transcoding processing from the MVC audio and video stream transcoding service to complete the distribution of the audio and video data information subjected to transcoding processing, and finally the EGW edge cloud gateway service of the management center encapsulates the received audio and video data information subjected to transcoding processing into a format supported by a cloud platform.
9. A method for transcoding and clouding large-scale monitoring videos is characterized by comprising the following steps:
s1, CMS-2 center management services of a sub-center respectively set basic parameters of MDS-2 audio and video stream distribution services, PAS front-end equipment access services, MVC-2 audio and video stream transcoding services and EGW-2 edge cloud gateway services of the sub-center and address information of CMS-1 center management services of a superior management center of the sub-center;
s2, CMS-1 center management services of a management center respectively set basic parameters of CMS-2 center management services, MDS-1 audio and video stream distribution services, MVC-1 audio and video stream transcoding services and EGW-1 edge cloud gateway services;
s3, the camera acquires audio and video data information;
s4, the PAS front-end equipment of the branch center is accessed into the service to receive and store the audio and video data information acquired by the camera, and the stored audio and video data information is transmitted to the MDS-2 audio and video stream distribution service of the branch center;
s5, receiving audio and video data information transmitted by PAS front-end equipment access service of the sub center by MDS-2 audio and video stream distribution service of the sub center, and transmitting the received audio and video data information to MVC-2 audio and video stream transcoding service of the sub center, EGW-2 edge cloud gateway service and MDS-1 audio and video stream distribution service of a management center;
s6, receiving audio and video data information transmitted by the MDS-2 audio and video stream distribution service by the MVC-2 audio and video stream transcoding service of the branch center, transcoding the received audio and video data information, and transmitting the transcoded audio and video data information to the MDS-2 audio and video stream distribution service;
s7, receiving audio and video data information transmitted by the MDS-2 audio and video stream distribution service and audio and video data information subjected to transcoding processing by an EGW-2 edge upper cloud gateway service of the sub-center, and performing protocol encapsulation on the received audio and video data information subjected to transcoding processing and transmitting the audio and video data information to a cloud platform;
and S8, the cloud platform receives and stores the packaged audio and video data information transmitted by the cloud gateway service on the edge of the EGW-2 of the sub-center.
10. The method for transcoding cloud of large-scale surveillance video according to claim 9, wherein the step S8 is further followed by:
s9, receiving audio and video data information transmitted by MDS-2 audio and video stream distribution services of the sub-center by MDS-1 audio and video stream distribution services of the management center, and transmitting the received audio and video data information to MVC-1 audio and video stream transcoding services of the management center and/or cloud gateway services on an EGW-1 edge of a management board platform;
s10, receiving audio and video data information transmitted by an MDS-1 audio and video stream distribution service of a management center by an MVC-1 audio and video stream transcoding service of the management center, transcoding the received audio and video data information, and transmitting the transcoded audio and video data information to the MDS-1 audio and video stream distribution service of the management center;
s11, receiving audio and video data information transmitted by an MDS-1 audio and video stream distribution service of a management center and audio and video data information after transcoding processing by an EGW-1 edge cloud gateway service of the management center, and performing protocol encapsulation on the received audio and video data information after transcoding processing and transmitting the audio and video data information to a cloud platform of the management center;
and S12, the cloud platform of the management center receives and stores the packaged audio and video data information transmitted by the cloud gateway service on the edge of the EGW-1 of the management center.
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