CN111294556A - Video front-end processing method based on GB/T28181 - Google Patents
Video front-end processing method based on GB/T28181 Download PDFInfo
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- 238000012544 monitoring process Methods 0.000 claims abstract description 41
- 238000000034 method Methods 0.000 claims abstract description 12
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- 238000004806 packaging method and process Methods 0.000 claims abstract description 9
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/443—OS processes, e.g. booting an STB, implementing a Java virtual machine in an STB or power management in an STB
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
- H04N21/478—Supplemental services, e.g. displaying phone caller identification, shopping application
- H04N21/4782—Web browsing, e.g. WebTV
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- 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
- H04N21/643—Communication protocols
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Abstract
The invention discloses a video front-end processing method based on GB/T28181, belonging to the field of video front-end processing, aiming at solving the technical problems of effectively reducing the difficulty of an integrator in integrating monitoring equipment and simultaneously reducing the difficulty that the SDK version of the equipment cannot be uniformly managed, and adopting the technical scheme that: the method comprises the steps that different types of security monitoring equipment of different manufacturers are accessed for primary integration according to a national standard protocol GB/T28181 of the security monitoring equipment, the security monitoring equipment is packaged into an ActiveX plug-in interface of a WEB end, the operation of the monitoring equipment is realized, meanwhile, the function of monitoring video pictures at a PC end in real time is realized by using an RTSP protocol, and video streams received at the PC end in real time are displayed on a browser playing plug-in based on B/S or a window based on C/S client software, so that the real-time monitoring of the video pictures is realized; the method comprises the following specific steps: and setting a basic interface of the bottom layer of the equipment and packaging the basic interface into dll or so library files.
Description
Technical Field
The invention relates to the field of video front-end processing, in particular to a video front-end processing method based on GB/T28181.
Background
In the current internet of things environment, a large number of security monitoring devices exist, such as cameras, intelligent transportation devices, hard disk video recorders, disk arrays, eagle eyes, thermal imaging, VMS (virtual vehicle system) intelligent all-in-one machines and other devices, which are not only classified by manufacturers, but also frequently changed in model. The intelligent device is more and more difficult to be compatible to various monitoring devices simultaneously by the same system along with various factors such as equipment hardware upgrading of manufacturers, equipment software upgrading, operating system upgrading, browser version upgrading, compatibility of old equipment and the like, and SDKs of different monitoring devices of the same manufacturers are not completely the same, so that a series of conflict problems can be caused in the use of different functions, part of the devices can be normally used, and part of the devices cannot be normally used.
The increasing number of SDK versions provided by hardware manufacturers, device types, device models, and manufacturers brings various complicated works and difficulties in performing secondary integration on monitoring devices, so how to effectively reduce the difficulty of integration of an integrating party on the monitoring devices and reduce the difficulty of incapability of uniformly managing the SDK versions of the devices is a technical problem to be solved urgently at present.
Disclosure of Invention
The technical task of the invention is to provide a video front-end processing method based on GB/T28181, so as to solve the problem of how to effectively reduce the difficulty of an integrator in integrating monitoring equipment and the difficulty of incapability of uniformly managing SDK versions of the equipment.
The invention is realized by the following mode, a video front-end processing method based on GB/T28181, the method is to access different types of security monitoring equipment of different manufacturers according to the national standard protocol GB/T28181 of the security monitoring equipment to carry out one-time integration, and encapsulate the security monitoring equipment into an ActiveX plug-in interface of a WEB end to realize the operation of the monitoring equipment, and simultaneously, the RTSP protocol is used to realize the function of monitoring video pictures in real time at a PC end, and the video stream received by the PC end in real time is displayed on a browser playing plug-in based on B/S or a window based on C/S client software to realize the real-time monitoring of the video pictures; the method comprises the following specific steps:
setting a basic interface of the bottom layer of the equipment and packaging the basic interface into dll or so library files; wherein dll is a dynamic link library used in the windows system environment; so is a dynamically linked library used under the linux operating system;
and performing secondary integration according to the packaged dynamic class library, and packaging the dynamic class library into an ActiveX plug-in interface of a WEB end provided externally, wherein the ActiveX plug-in interface of the WEB end is directly called at the WEB end, so that a corresponding function provided by the ActiveX plug-in interface of the WEB end is realized.
GB/T28181 technical requirements for information transmission, exchange and control of security and protection video monitoring networking systems are provided by the scientific and technical information bureau of the ministry of public security, and are a national standard which is drafted by a plurality of units such as the national security and protection alarm system standardization technical committee (SAC/TC100) at home and the ministry of public security.
Different types of monitoring equipment of different manufacturers:
different vendors are supported: haikang, Dahua, Yu Shi, Tiandi Wei, Kodao, Qianliang, Zhinuo, Kyoho, etc.;
different types of monitoring devices include: the system comprises a license plate recognition camera, a panoramic network snapshot camera, a face recognition semi-dome camera, a thermal imaging binocular camera, an eagle eye camera, a digital video recorder, an analog video recorder, a disk array, a VMS intelligent all-in-one machine and the like.
Rtsp (Real Time Streaming protocol) is an application layer protocol proposed by Real Network and Netscape together how to efficiently transmit Streaming media data over IP networks.
The PC end monitors video pictures in real time, the PC end refers to a user computer end, and the client carrier can be a browser based on B/S or client software based on C/S. And displaying the video stream received in real time on a window of a browser playing plug-in or client software, thereby realizing real-time monitoring of video pictures.
Preferably, the basic interface comprises a registration and cancellation interface, a real-time video and audio on demand interface, an equipment control interface, an equipment audio and video file retrieval interface and a historical video and audio playback and playback control interface.
Preferably, the ActiveX plug-in interface of the WEB end is packaged into an applet plug-in JAVA language, and is packaged into an ActiveX plug-in of the WEB end in C # C + + language, and is directly called at the browser end.
Preferably, the applet plug-in is packaged into a JAR package, and the JAR package is introduced at a WEB end through an applet tag to realize the calling of the plug-in.
Preferably, the applet plug-in is packaged into a CAB package, and the CAB package is introduced at a WEB end through an object tag, so that the plug-in is called.
Preferably, the ActiveX plug-in interface of the WEB end comprises a real-time preview interface, a photographing interface, a character superposition interface, a pan-tilt control interface, a real-time video recording interface and a playback and replay control interface; wherein the content of the first and second substances,
the photographing refers to storing the state of the acquired real-time video stream at any moment as a static picture;
the video recording refers to storing the state of the acquired real-time video stream in any period of time into a dynamic video file;
the character superposition means that specified text content or time is displayed on any area of a video monitoring picture;
pan-tilt control refers to control of the orientation adjustment (up, down, left, right, up-left, down-left, up-right, down-right movement), zooming, and focusing of a camera.
Preferably, the step of calling the ActiveX plug-in interface of the WEB end is as follows:
(1) the introduction plug-in is as follows:
①, introducing object tags, wherein the tag id is video, and the name of the tag id cannot be repeated with other tag ids of the current html interface;
②, the classid of the plug-in is used as the unique identification of the plug-in and is provided by the person writing the plug-in;
③, codebase is the path of the plug-in the server, and the client downloads from the address when accessing for the first time;
④, version is used for automatic upgrade of control plug-in;
⑤, width and height are used for displaying the size of the plug-in form interface displayed on the web end;
(2) and calling a plug-in interface.
Preferably, the calling steps of the basic interface are as follows:
s1, initializing;
s2, acquiring a resource list from the equipment; returning asynchronously;
s3, pubid is empty, and all are obtained; or any subordinate pubid, and only the resource of the subordinate id is acquired;
s4, acquiring a local existing resource list; actively returning;
s5, pubid is empty, and all are obtained; acquiring all resources of any subordinate level; acquiring the channel information for any channel;
s6, starting the real-time video, and executing the step S7;
s7, finishing the real-time video, and executing the step S8;
s8, performing reverse initialization, and executing the step S14;
s9, executing the device control simultaneously with the step S6, and executing the next step S8;
s10, executing historical video query simultaneously with the step S6 and the step S9, asynchronously returning, and executing the step S11;
s11, starting the history video, and executing the step S12 and the step S13;
s12, finishing the history video, and executing the step S8;
s13, historical video control, and the next step is to execute the step S8;
and S14, ending.
The video front-end processing method based on GB/T28181 has the following advantages:
the invention solves various complex work and problems caused by secondary integration of monitoring equipment due to the fact that increasingly more SDK versions are provided by hardware manufacturers, equipment types, equipment models and manufacturers, and timely and effectively reduces the difficulty of integration of the monitoring equipment by an integrator and the difficulty that the SDK versions of the equipment cannot be uniformly managed;
the invention provides a method for integrating the monitoring equipment at one time according to the national standard protocol of the monitoring equipment, packaging the monitoring equipment into an ActiveX plug-in unit of a WEB end, and providing some basic interfaces for the outside: previewing, photographing, recording, character superposition, holder and the like; any device can realize the functional interface supported by the plug-in as long as the device supports the protocol, and the problems of different SDKs of different manufacturers or different SDKs of the same manufacturer and the like do not need to be concerned;
and thirdly, the input parameters (ip, port, channel, user name and password) of the monitoring equipment supporting the national standard GB/T28181 protocol are transmitted into the corresponding plug-in interface, so that the functions of real-time picture monitoring, holder control, photographing, video recording and the like of different kinds of monitoring equipment of multiple manufacturers can be realized.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of a video front-end processing method based on GB/T28181 according to the present invention;
FIG. 2 is a block diagram of the basic interface;
FIG. 3 is a structural block diagram of a WEB-side ActiveX plug-in interface;
FIG. 4 is a block diagram of a process for calling a base class library.
Detailed Description
The video front-end processing method based on GB/T28181 is described in detail below with reference to the drawings and specific embodiments of the specification.
Example (b):
as shown in fig. 1, the method for processing a video front end based on GB/T28181 according to the present invention is to access security monitoring devices of different types from different manufacturers according to the national standard protocol GB/T28181 of the security monitoring devices to perform a first integration, and encapsulate them as an ActiveX plug-in interface of a WEB end, so as to implement an operation on the monitoring devices, and at the same time, use an RTSP protocol to implement a function of monitoring a video picture in real time at a PC end, and display a video stream received in real time at the PC end on a browser play plug-in based on B/S or a window based on C/S client software, so as to implement real-time monitoring of the video picture; the method comprises the following specific steps:
setting a basic interface of the bottom layer of the equipment and packaging the basic interface into dll or so library files; wherein dll is a dynamic link library used in the windows system environment; so is a dynamically linked library used under the linux operating system;
and performing secondary integration according to the packaged dynamic class library, and packaging the dynamic class library into an ActiveX plug-in interface of a WEB end provided externally, wherein the ActiveX plug-in interface of the WEB end is directly called at the WEB end, so that a corresponding function provided by the ActiveX plug-in interface of the WEB end is realized.
GB/T28181 technical requirements for information transmission, exchange and control of security and protection video monitoring networking systems are provided by the scientific and technical information bureau of the ministry of public security, and are a national standard which is drafted by a plurality of units such as the national security and protection alarm system standardization technical committee (SAC/TC100) at home and the ministry of public security.
Different types of monitoring equipment of different manufacturers:
different vendors are supported: haikang, Dahua, Yu Shi, Tiandi Wei, Kodao, Qianliang, Zhinuo, Kyoho, etc.;
different types of monitoring devices include: the system comprises a license plate recognition camera, a panoramic network snapshot camera, a face recognition semi-dome camera, a thermal imaging binocular camera, an eagle eye camera, a digital video recorder, an analog video recorder, a disk array, a VMS intelligent all-in-one machine and the like.
Rtsp (Real Time Streaming protocol) is an application layer protocol proposed by Real Network and Netscape together how to efficiently transmit Streaming media data over IP networks.
The PC end monitors video pictures in real time, the PC end refers to a user computer end, and the client carrier can be a browser based on B/S or client software based on C/S. And displaying the video stream received in real time on a window of a browser playing plug-in or client software, thereby realizing real-time monitoring of video pictures.
As shown in fig. 2, the basic interface includes a registration and cancellation interface, a real-time video/audio on-demand interface, a device control interface, a device audio/video file retrieval interface, and a historical video/audio playback and playback control interface.
And the ActiveX plug-in interface of the WEB end is packaged into an applet plug-in by using JAVA language, and is packaged into an ActiveX plug-in of the WEB end by using C # C + + language, and the ActiveX plug-in interface is directly called at the browser end. and packaging the applet plug-in into a JAR package, and introducing the JAR package into a WEB end through an applet tag to realize the calling of the plug-in. Or the applet plug-in is packaged into a CAB package, and the CAB package is introduced at the WEB end through an object label to realize the calling of the plug-in. As shown in fig. 3, the ActiveX plug-in interface of the WEB end includes a real-time preview interface, a photographing interface, a character superposition interface, a pan-tilt control interface, a real-time recording interface, and a playback and replay control interface; the shooting refers to storing the state of the acquired real-time video stream at any moment as a static picture;
the video recording refers to storing the state of the acquired real-time video stream in any period of time into a dynamic video file;
the character superposition means that specified text content or time is displayed on any area of a video monitoring picture;
pan-tilt control refers to control of the orientation adjustment (up, down, left, right, up-left, down-left, up-right, down-right movement), zooming, and focusing of a camera. The key codes are as follows:
///<summary>
// Preview
///</summary>
V/param name ═ csstering [ # ] multiple cameras are spliced together, and monitoring point 1# monitoring point 2 [ #]
///<returns></returns>
Parameter format:
IP _ Lane number
@ port number
@ username
@ password
@ Generation File related (local Path _ zznm _ Camera name)
@ calling bag
@ code stream (3-main code stream default 1-auxiliary code stream)
@ abnormal information
public void ylvideo(string csString)
///<summary>
// taking a picture
///</summary>
// < param name [ "ip" ] ip address >
/< param name ═ port "> Port number >
/< param name ═ channelId >
// < turns > true-success; false-failures >
public bool TakePhotos(string ip,int port,int channelId)
///<summary>
// character superimposition
///</summary>
/< param name ═ str "> superimposed text content >
If the device name is "ipport" > ip Port >
/< param name ═ channel ID >
V// < param name ═ topLeftX "> superimposes the x coordinate of the content, </param >
/< param name ═ topLeftY "> superimposing the y coordinate of the content >
// < return > return value: 1-success-1-interface call failure 0-device not logged in-3-occurrence of exception-4-device type mismatch >
public int addString(string str,string ipport,int channelId,ushorttopLeftX,ushort topLeftY)
///<summary>
// Pan operating Instructions
///</summary>
V/param name ═ cmd "> operation instruction code >
V// < param name ═ startFlag "> start flag: 0-Start 1-stop >
V/< return > successfully returns 1, interface call failure returns-1, no preview returns-2; exceptions Return-3 </return >
public int Ptz _ Control (int cmd, int startFlag); as in the following table:
| instruction name | Instruction code |
| On the upper part | 1 |
| Lower part | 2 |
| Left side of | 3 |
| Right side | 4 |
| Upper right part | 5 |
| Upper left of | 6 |
| Lower right | 7 |
| Left lower part | 8 |
| Amplification of | 10 |
| Shrinking | 11 |
| Focus-near | 13 |
| Focus-far | 14 |
| Aperture-opening | 17 |
| Aperture-closing | 18 |
The method comprises the following steps of calling an ActiveX plug-in interface of a WEB side:
(1) the introduction plug-in is as follows:
①, introducing object tags, wherein the tag id is video, and the name of the tag id cannot be repeated with other tag ids of the current html interface;
②, the classid of the plug-in is used as the unique identification of the plug-in and is provided by the person writing the plug-in;
③, codebase is the path of the plug-in the server, and the client downloads from the address when accessing for the first time;
④, version is used for automatic upgrade of control plug-in;
⑤, width and height are used for displaying the size of the plug-in form interface displayed on the web end, and the key codes are as follows:
(2) calling a plug-in interface; the key codes are as follows:
as shown in fig. 4, the basic interface is called as follows:
s1, initializing;
s2, acquiring a resource list from the equipment; returning asynchronously;
s3, pubid is empty, and all are obtained; or any subordinate pubid, and only the resource of the subordinate id is acquired;
s4, acquiring a local existing resource list; actively returning;
s5, pubid is empty, and all are obtained; acquiring all resources of any subordinate level; acquiring the channel information for any channel;
s6, starting the real-time video, and executing the step S7;
s7, finishing the real-time video, and executing the step S8;
s8, performing reverse initialization, and executing the step S14;
s9, executing the device control simultaneously with the step S6, and executing the next step S8;
s10, executing historical video query simultaneously with the step S6 and the step S9, asynchronously returning, and executing the step S11;
s11, starting the history video, and executing the step S12 and the step S13;
s12, finishing the history video, and executing the step S8;
s13, historical video control, and the next step is to execute the step S8;
and S14, ending.
The key codes are as follows:
v/initialization
int C_InitSDK(char*svrip,int listenport,char*svrpubid,char*username,char*password,EventCallbackDefine eventcallback)；
// inverse initialization
int C_UnInitSDK(void)；
Acquiring a resource list from the equipment; asynchronous return
If// pubid is empty, all are obtained; or a certain subordinate pubid only acquires the resource of the subordinate id
int C_GetResource(char*pubid)；
Acquiring a local existing resource list; active return
If// pubid is empty, all are obtained; acquiring all resources of a subordinate for a subordinate; obtaining the channel information for a certain channel
const char*C_GetLocalResource(char*pubid)；
// real-time video Start
long C_RealVideoStart(char*chanpubid,StreamCallbackDefinerealcallback,long userdata)；
// real-time video ending
int C_RealVideoStop(long realhandle)；
// device control
int C_Ptz(char*chanpubid,int ptztype,int ptzparam)；
// historical video query, asynchronous return
const char*C_HisVideoQuery(char*chanpubid,char*begintime,char*endtime)；
// historical video Start
long C_HisVideoStart(char*chanpubid,char*begintime,char*endtime,StreamCallbackDefine hiscallback,long userdata,int download)；
// historical video end
int C_HisVideoStop(long hishandle)；
// historical video control
int C_HisVideoCtrl(long hishandle,int ctrltype,long ctrlparam)。
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. A video front-end processing method based on GB/T28181 is characterized in that the method is characterized in that security monitoring equipment of different types of different manufacturers is accessed according to a national standard protocol GB/T28181 of the security monitoring equipment for primary integration, and the security monitoring equipment is packaged into an ActiveX plug-in interface of a WEB end to realize the operation of the monitoring equipment, meanwhile, an RTSP protocol is used for realizing the function of real-time monitoring of video pictures at a PC end, and video streams received by the PC end in real time are displayed on a browser playing plug-in based on B/S or a window based on C/S client software to realize the real-time monitoring of the video pictures; the method comprises the following specific steps:
setting a basic interface of the bottom layer of the equipment and packaging the basic interface into dll or so library files;
and performing secondary integration according to the packaged dynamic class library, and packaging the dynamic class library into an ActiveX plug-in interface of a WEB end provided externally, wherein the ActiveX plug-in interface of the WEB end is directly called at the WEB end, so that a corresponding function provided by the ActiveX plug-in interface of the WEB end is realized.
2. The GB/T28181-based video front-end processing method according to claim 1, wherein said basic interfaces include a registration and cancellation interface, a real-time video-audio on-demand interface, a device control interface, a device audio-video file retrieval interface, and a playback and playback control interface for historical video and audio.
3. The video front-end processing method based on GB/T28181 according to claim 1 or 2, wherein said ActiveX plug-in interface of WEB end packages it into applet plug-in by JAVA language, packages it into ActiveX plug-in of WEB end by C # C + + language, and calls it directly at browser end.
4. The GB/T28181-based video front-end processing method according to claim 3, wherein the applet plug-in is packaged into a JAR package, and the JAR package is introduced at a WEB end through an applet tag to realize calling of the plug-in.
5. The GB/T28181-based video front-end processing method according to claim 3, wherein the applet plug-in is packaged into a CAB package, and the CAB package is introduced through an object tag at a WEB end to realize calling of the plug-in.
6. The GB/T28181-based video front-end processing method according to claim 3, wherein the ActiveX plug-in interfaces of the WEB end comprise a real-time preview interface, a photographing interface, a character superposition interface, a pan-tilt control interface, a real-time video recording interface and a playback and replay control interface; wherein the content of the first and second substances,
the photographing refers to storing the state of the acquired real-time video stream at any moment as a static picture;
the video recording refers to storing the state of the acquired real-time video stream in any period of time into a dynamic video file;
the character superposition means that specified text content or time is displayed on any area of a video monitoring picture;
pan-tilt control refers to the control of the azimuth adjustment, zoom, and focus of a camera.
7. The GB/T28181-based video front-end processing method according to claim 6, wherein the step of calling the ActiveX plug-in interface of the WEB end is as follows:
(1) the introduction plug-in is as follows:
①, introducing object tags, wherein the tag id is video, and the name of the tag id cannot be repeated with other tag ids of the current html interface;
②, the classid of the plug-in is used as the unique identification of the plug-in and is provided by the person writing the plug-in;
③, codebase is the path of the plug-in the server, and the client downloads from the address when accessing for the first time;
④, version is used for automatic upgrade of control plug-in;
⑤, width and height are used for displaying the size of the plug-in form interface displayed on the web end;
(2) and calling a plug-in interface.
8. Method for video front-end processing based on GB/T28181 according to claim 1 or 2, characterized in that the step of calling the base interface is as follows:
s1, initializing;
s2, acquiring a resource list from the equipment; returning asynchronously;
s3, pubid is empty, and all are obtained; or any subordinate pubid, and only the resource of the subordinate id is acquired;
s4, acquiring a local existing resource list; actively returning;
s5, pubid is empty, and all are obtained; acquiring all resources of any subordinate level; acquiring the channel information for any channel;
s6, starting the real-time video, and executing the step S7;
s7, finishing the real-time video, and executing the step S8;
s8, performing reverse initialization, and executing the step S14;
s9, executing the device control simultaneously with the step S6, and executing the next step S8;
s10, executing historical video query simultaneously with the step S6 and the step S9, asynchronously returning, and executing the step S11;
s11, starting the history video, and executing the step S12 and the step S13;
s12, finishing the history video, and executing the step S8;
s13, historical video control, and the next step is to execute the step S8;
and S14, ending.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010082156.4A CN111294556A (en) | 2020-02-07 | 2020-02-07 | Video front-end processing method based on GB/T28181 |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010082156.4A CN111294556A (en) | 2020-02-07 | 2020-02-07 | Video front-end processing method based on GB/T28181 |
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| Publication Number | Publication Date |
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