WO2021012246A1

WO2021012246A1 - Multi-video signal previewing method and multi-video signal previewing system

Info

Publication number: WO2021012246A1
Application number: PCT/CN2019/097625
Authority: WO
Inventors: 刘伟欣; 周晶晶
Original assignee: 西安诺瓦星云科技股份有限公司
Priority date: 2019-07-25
Filing date: 2019-07-25
Publication date: 2021-01-28
Also published as: CN112567735A

Abstract

Disclosed is a multi-video signal previewing method, comprising: obtaining multiple input video signal materials from multiple video signal sources, and performing video processing on the multiple input video signal materials to obtain multiple output video signal materials; performing calculation according to a layout parameter of a selected multi-video signal previewing template, the resolution of a previewing display, and attribute information of multiple input and output video signal materials to obtain a layout parameter of a multi-video signal previewing picture; performing, according to the layout parameter of the multi-video signal previewing picture, integration processing on the multiple input and output video signal materials to obtain the multi-video signal previewing picture; and outputting the multi-video signal previewing picture by means of a single viewing video output interface. Further disclosed is a multi-video signal previewing system.

Description

Multi-video signal preview method and multi-video signal preview system

Technical field

This application relates to the technical field of video surveillance, and in particular to a multi-video signal preview method and a multi-video signal preview system.

Background technique

With the development of video processing technology, the input and output of video processing equipment are increasing. The operator generally needs to continuously monitor the current video input and output status through the monitoring screen to complete the operation of the equipment. Therefore, the video monitoring function of video processing equipment plays an important role, and the ease of use of this part of the function has a great impact on the user experience. Therefore, the multi-screen preview (MVR) technology emerged at the historic moment, which can display the current output screen, preview the output screen and/or input screen in a multi-video signal preview screen at the same time, and the on-site equipment operators can use the multi-video The signal preview screen has a global grasp of the on-site video signal processing status, which greatly improves the ease of use of the equipment.

However, most current video processing devices only provide a single monitoring video output interface, and the single monitoring video output interface provides monitoring of input or output video images. The preview screen output by the single monitoring video output interface is single, which cannot realize the simultaneous display of input and output video images. At the same time, the preview screen layout is fixed, and the preview screens with multiple layouts cannot be flexibly switched. A single monitoring screen cannot meet the needs of field applications. Therefore, how to centrally monitor the input and output video signals on a single monitoring video output interface, provide multiple multi-video signal preview screen layout modes, and realize flexible switching between layout modes are currently urgent problems to be solved.

Summary of the invention

The embodiments of the present application provide a multi-video signal preview method and a multi-video signal preview system, which can implement centralized monitoring of the input and output video of a video processing device on a single video output interface, and can achieve multiple multiple The flexible switching of video signal preview screen layout makes multi-video signal preview screen effects more flexible and diverse.

On the one hand, a multi-video signal preview method provided by an embodiment of the present application includes: obtaining multiple input video signal materials from multiple video signal sources, and performing video processing on the multiple input video signal materials to obtain multiple Output video signal material; provide selected multi-video signal preview template and preview display; according to the layout parameters of the selected multi-video signal preview template, the resolution of the preview display, the multiple inputs The attribute information of the video signal material and the attribute information of the multiple output video signal materials are calculated to obtain the layout parameters of the multi-video signal preview screen; and the multiple input video signals are calculated according to the layout parameters of the multi-video signal preview screen. The material and the multiple output video signal materials are integrated and processed to obtain a multi-video signal preview screen; the multi-video signal preview screen is output to the preview display through a single monitoring video output interface for display; wherein, the The layout parameters of the selected multi-video signal preview template include: preview template window parameters, signal source corresponding to the preview template window, and preview template line parameters; the preview template window parameters include: preview template window start point Coordinates, preview template window height and preview template window width; the preview template line parameters include: preview template line starting point coordinates, preview template line length and preview template line width; preview template window starting point coordinates The height of the preview template window, the width of the preview template window, the starting point coordinates of the preview template line, and the length of the preview template line are respectively relative parameters; the preview template line width is an absolute parameter; The multi-video signal preview method further includes: selecting a multi-video signal preview template from a plurality of multi-video signal preview templates as the selected multi-video signal preview template.

On the other hand, a multi-video signal preview method provided by an embodiment of the present application includes: obtaining multiple input video signal materials from multiple video signal sources, and performing video processing on the multiple input video signal materials to obtain multiple Output video signal materials; provide selected multi-video signal preview templates and preview displays; according to the layout parameters of the selected multi-video signal preview templates, the resolution of the preview display, the multiple The attribute information of the input video signal material and the attribute information of the multiple output video signal materials are calculated to obtain the layout parameters of the multi-video signal preview screen; and the multiple input videos are calculated according to the layout parameters of the multi-video signal preview screen. The signal material and the multiple output video signal materials are integrated and processed to obtain a multi-video signal preview picture; the multi-video signal preview picture is output to the preview display through a single monitoring video output interface for display.

In the prior art, a single surveillance video output interface provided by a video processing device can only monitor input or output video images, resulting in a single preview image output by a single surveillance video output interface, which cannot realize simultaneous display of input and output video images. , At the same time, the preview screen layout is fixed, and the preview screens with multiple layouts cannot be switched flexibly. In this embodiment of the application, a selected multi-video signal preview template is used to integrate multiple input video signal materials and multiple output video signal materials to obtain a multi-video signal preview screen, and output the multiple video signal through a single monitoring video output interface. The video signal preview screen is displayed on the preview monitor. By selecting different multi-video signal preview templates as the selected multi-video signal preview templates, the input and output of video processing equipment can be realized on a single video output interface. Centralized monitoring of output and pre-output videos, and flexible switching of multiple video signal preview screen layout modes, making the multi-video signal preview screen effects more flexible and diverse.

In an embodiment of the present application, the inputting multiple video signal sources to obtain multiple input video signal materials includes: splitting some or all of the multiple video signal sources to obtain multiple sub video signals Source; the multiple input video signal materials include: the multiple sub video signal sources and the multiple video signal sources that have not undergone the split processing.

In an embodiment of the present application, the layout parameters of the selected multi-video signal preview template include: preview template window parameters, signal source corresponding to the preview template window, and preview template line parameters.

In an embodiment of the present application, the preview template window parameters include: the starting point coordinates of the preview template window, the height of the preview template window, and the width of the preview template window; the preview template line parameters include: the preview template line Starting point coordinates, preview template line length and preview template line width.

In an embodiment of the present application, the starting point coordinates of the preview template window, the height of the preview template window, the width of the preview template window, the coordinates of the starting point of the preview template line, and the length of the preview template line They are relative parameters; the line width of the preview template is an absolute parameter.

In an embodiment of the present application, the multi-video signal preview picture includes: at least one of the input video signal material and/or at least one of the output video signal material.

In an embodiment of the present application, the layout parameters of the preview template according to the selected multiple video signals, the resolution of the preview display, the attribute information of the multiple input video signal materials, the The attribute information of multiple output video signal materials is calculated to obtain the layout parameters of the multi-video signal preview screen, including: in response to a user selection operation, selecting a multi-video signal preview template to obtain the selected multi-video signal preview template layout parameters Calculate the resolution size corresponding to each window in the multi-video signal preview template according to the resolution of the preview display and the layout parameters of the selected multi-video signal preview template; according to the multiple The attribute information of the input video signal material, the resolution size of the window in the multi-video signal preview template corresponding to the multiple input video signal materials, the attribute information of the multiple output video signal materials, and the corresponding The resolution size of the windows in the multiple video signal preview template of the multiple output video signal materials is calculated to obtain the zoom parameters corresponding to the multiple input video signal materials and the multiple output video signal materials; The zoom parameter and the starting point coordinate of the preview template window corresponding to the input video signal material and each output video signal material are used as the layout parameters of the multi-video signal preview picture.

In another aspect, a multi-video signal preview system provided by an embodiment of the present application includes: a video processing device, including a single monitoring video output interface, and the video processing device is configured to execute the video processing device described in any of the foregoing embodiments. A multi-video signal preview method to obtain the multi-video signal preview picture and output the multi-video signal preview picture through the single monitoring video output interface; a preview display for receiving and displaying the single monitoring video output The multi-video signal preview image output by the interface.

In an embodiment of the present application, the multiple multi-video signal preview templates are pre-stored in the video processing device.

In yet another aspect, an embodiment of the present application provides a computer-readable medium, where the computer-readable medium stores computer-readable instructions, and the computer-readable instructions include instructions for executing any of the foregoing Video signal preview method instruction.

The above technical solution may have one or more of the following advantages: by calling the selected multi-video signal preview template, multiple input video signal materials and multiple output video signal materials are integrated and processed to obtain a multi-video signal preview picture, and a single The monitoring video output interface outputs the multi-video signal preview screen to the preview display for display. By selecting different multi-video signal preview templates as the selected multi-video signal preview templates, it can be displayed on a single video output interface It realizes the centralized monitoring of the input, output and pre-output video of the video processing equipment, and can realize the flexible switching of multiple multi-video signal preview screen layout modes, making the multi-video signal preview screen effect more flexible and diverse.

Description of the drawings

In order to explain the technical solutions of the embodiments of the present application more clearly, the following will briefly introduce the drawings needed in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative work, other drawings can be obtained based on these drawings.

FIG. 1A is a schematic flowchart of a multi-video signal preview method according to an embodiment of the application;

FIG. 1B is a schematic flow chart of obtaining multiple output video signal materials in a multi-video signal preview method according to an embodiment of the application;

FIG. 1C is a schematic flowchart of obtaining a multi-video signal preview picture in a multi-video signal preview method according to an embodiment of the application;

2 is a schematic structural diagram of a multi-video signal preview system according to another embodiment of the application;

3A-3F are schematic diagrams of the layout of some multi-video signal preview templates in an embodiment of the application;

4 is a detailed schematic diagram of the multi-video signal preview template shown in FIG. 3F;

5A-5C are schematic diagrams of preview effects corresponding to the multiple video signal preview templates shown in FIGS. 3A-3C;

FIG. 6 is a schematic structural diagram of a computer-readable medium according to still another embodiment of this application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application.

As shown in FIG. 1A, a multi-video signal preview method 10 provided by an embodiment of this application. include:

Step S11: Input multiple video signal sources to obtain multiple input video signal materials. The multiple input video signal materials, that is, the multiple input video signal sources, are used as the material sources of the multiple video signal preview images to be generated subsequently.

Step S13: Perform video processing on the multiple input video signal materials to obtain multiple output video signal materials. The multiple output video signal materials, that is, multiple output video signals obtained by performing video processing on the multiple input video signal materials (the input multiple video signal sources), are used as multiple video signals to be generated subsequently The source of the preview screen.

Step S15: Perform integration processing on the multiple input video signal materials and the multiple output video signal materials based on the selected multiple video signal preview template and the resolution of the preview display to obtain a multiple video signal preview picture.

Step S17: Output the multi-video signal preview screen to the preview display through a single monitoring video output interface for display.

Specifically, the multi-video signal preview picture includes, for example, at least one of the input video signal material or at least one output video signal material, that is, the video signal material in the multi-video signal preview picture is selected from all Any one of the plurality of input video signal materials and the plurality of output video signal materials or any one of the output video signal materials. Of course, in order to achieve the purpose of centralized monitoring of the input and output video of the video processing device on a single video output interface, optionally, the multi-video signal preview screen includes: at least one input video signal material and at least one The output video signal material, that is, the video signal material in the multi-video signal preview picture includes at least one input video signal material and one output video signal material. Usually, all the video signal materials of the multiple input video signal materials and the multiple output video signal materials are all integrated on the multi-video signal preview screen to achieve a comprehensive view of the input video signal and the output video signal. Surveillance. Of course, in some other embodiments, the multi-video signal preview picture may also include only the input video signal material or only the output video signal material. Of course, when the multi-video signal preview picture only includes When the video signal material is input, the number of the input video signal material may be one or more; when the multi-video signal preview picture only includes the output video signal material, the number of the output video signal material It can also be one or more.

Specifically, step S11 includes, for example, splitting some or all of the multiple video signal sources to obtain multiple sub-video signal sources; in this case, the multiple input video signal materials include: Sub video signal sources and video signal sources that have not undergone the split processing among the multiple video signal sources. Of course, in some other embodiments, step S11 may not include the step of “splitting part or all of the multiple video signal sources to obtain multiple sub-video signal sources”. In this case, the The plurality of input video signal materials include the plurality of video signal sources. That is, in some embodiments, some split processing may be performed on the multiple video signal sources before performing step S13; in other embodiments, the split processing may not be performed, but directly As the video signal material of the multi-video signal preview picture.

The following takes Fig. 1B as an example to illustrate the execution process of step S11 and step S13. As can be seen from Fig. 1B, the number of input video signal sources in the figure is two, respectively, the input video signal source displaying the capital letter A INPUTA and the input video signal source INPUTB displaying the capital letter B. Step S11 is performed to split the INPUTA in the two input video signal sources. For example, as shown in FIG. 1B, split from the middle into left and right parts, that is, two sub video signal sources INPUTA1 and INPUTA2 are obtained; Split processing. At this time, the obtained multiple video signal materials include INPUTA1, INPUTA2, and INPUTB in this example. Step S13 is then performed to perform video processing on the multiple input video signal materials described in this example, namely INPUTA1, INPUTA2, and INPUTB. For example, as shown in FIG. After merging with the reduced INPUTB, expand the screen size to the right to obtain the output video signal material OUTPUT2, and expand the screen size of the INPUTB to the right to obtain the output video signal material OUTPUT3, that is, the multiple output video signals finally obtained through step S13 The materials are OUTPUT1, OUTPUT2, and OUTPUT3 in this example. The multiple input video signal materials and the multiple output video signal materials jointly constitute the video signal material of the multi-video signal preview picture that is subsequently generated. Step S15 includes, for example, obtaining the layout parameters of the selected multi-video signal preview template; based on the attribute information of the multiple input video signal materials, the attribute information of the multiple output video signal materials, and the selected The layout parameter of the multi-video signal preview template and the resolution of the preview display are calculated to obtain the layout parameter of the multi-video signal preview screen; the pair of layout parameters based on the multi-video signal preview screen Performing the integration processing on the plurality of input video signal materials and the plurality of output video signal materials to obtain the multi-video signal preview picture.

Specifically, the layout parameters of the selected multi-video signal preview template used in step S15 include, for example: preview template window parameters, signal source corresponding to the preview template window, and preview template line parameters. The attribute information of the multiple input video signal materials is, for example, the resolution of each input video signal material, and the attribute information of the multiple output video signal materials is, for example, the resolution of each output video signal material.

Wherein, the preview template window parameters include, for example, the starting point coordinates of the preview template window, the height of the preview template window, and the width of the preview template window. The preview template line parameters include: the starting point coordinates of the preview template line, the length of the preview template line and the width of the preview template line.

Specifically, the starting point coordinates of the preview template window, the height of the preview template window, the width of the preview template window, the starting point coordinates of the preview template line, and the length of the preview template line are relative parameters; The line width of the preview template is an absolute parameter.

Specifically, according to the layout parameters of the selected multi-video signal preview template, the resolution of the preview display, the attribute information of the plurality of input video signal materials, and the plurality of output video signal materials The attribute information calculated to obtain the layout parameters of the multi-video signal preview screen includes, for example, in response to a user selection operation, selecting a multi-video signal preview template to obtain the layout parameters of the selected multi-video signal preview template; The resolution of the display and the layout parameters of the selected multi-video signal preview template are calculated to obtain the resolution size corresponding to each window in the multi-video signal preview template; according to the attributes of the multiple input video signal materials Information, the resolution size of the window in the multi-video signal preview template corresponding to the plurality of input video signal materials, the attribute information of the plurality of output video signal materials, respectively corresponding to the plurality of output video signals The resolution size of the window in the multi-video signal preview template of the material is calculated to obtain the scaling parameters respectively corresponding to the multiple input video signal materials and the multiple output video signal materials; The zoom parameter and the starting point coordinate of the preview template window corresponding to the material and each output video signal material are used as the layout parameters of the multi-video signal preview picture.

1C is taken as an example to illustrate the execution process of step S15. In response to the user's selection operation, the multi-video signal preview template is selected to obtain the layout parameters of the selected multi-video signal preview template; according to the resolution and the preview display The layout parameters of the selected multi-video signal preview template are calculated to obtain the resolution size corresponding to each window in the multi-video signal preview template; according to the attribute information of multiple input video signal materials, corresponding to multiple input video signal materials The resolution size of the window in the multi-video signal preview template, the attribute information of multiple output video signal materials, and the resolution size of the window in the multi-video signal preview template corresponding to multiple output video signal materials are calculated. The zoom parameters corresponding to the input video signal material and the multiple output video signal materials respectively; the zoom parameter corresponding to each input video signal material and each output video signal material and the starting point coordinates of the preview template window are used as the multi-video signal preview The layout parameters of the screen are sent to the corresponding MVR Scaler module. The scaling processing module will perform the processing on the multiple input video signal materials such as INPUTA1, INPUTA2, and INPUTB obtained in FIG. 1B and the multiple output video signal materials based on the layout parameters of the multi-video signal preview screen. The OUTPUT1, OUTPUT2, and OUTPUT3 obtained in 1B are scaled and integrated to obtain the multi-video signal preview picture. It should be noted that the aforementioned step of calculating the scaling parameters further includes, for example, the resolution size of the window in the multi-video signal preview template corresponding to the multiple input video signal materials according to the attribute information of the multiple input video signal materials. , Window zoom information, window splicing information, attribute information of multiple output video signal materials, window resolution size, window zoom information and window splicing information calculation in the multi-video signal preview template corresponding to multiple output video signal materials Obtain the scaling parameters corresponding to multiple input video signal materials and multiple output video signal materials, respectively. The window zoom information mentioned therein is, for example, a 1:1 display or a 19:9 zoom display. The mentioned window splicing information is, for example, that there are two video signal materials in the window to be spliced up and down.

Further, the multi-video signal preview method, for example, further includes: selecting a multi-video signal preview template from a plurality of multi-video signal preview templates as the selected multi-video signal preview template. Through this step, different multi-video signal preview templates are selected as the target multi-video signal preview templates, so that the switching between the multi-video signal preview templates can be realized, and then the selected target multi-video signal preview templates can be called in the subsequent steps. Realize flexible switching between multiple video signal preview screen layout methods, specifically, for example, you can set a button for switching multiple video signal preview templates on the video processing device, for example, you can switch to the target video by rotating the button. Video signal preview template, and then press the OK button to select the target multi-video signal preview template to execute the multi-video signal preview method of this embodiment to obtain the multi-video signal preview according to the target multi-video signal preview template layout Monitor screen. It is worth mentioning here that when the multi-video signal preview is performed for the first time, the selected multi-video signal preview template may not be the target multi-video signal preview template obtained by the user's selection, but set in advance. Good default multi-video signal preview template. It is worth mentioning here that the multiple multi-video signal preview templates are, for example, designed in advance and stored in advance according to needs, for example, they may be stored locally in a video processing device, for example.

In the following, taking the multiple video signal sources including 8 video signal sources as an example, the multiple multiple video signal preview templates will be described with reference to FIGS. 3A-3F and FIG. 4.

As shown in FIGS. 3A-3F, some examples of the multiple multi-video signal preview templates, the embodiment of the present application is not limited to this, and more multi-video signal preview templates can be designed according to user needs. Among them, PGM, PVW and INPUT represent the current output screen, preview output screen and input screen respectively. A, B, C, D, E, F, G, and H respectively represent the eight video signal sources in this embodiment. As shown in Figure 3A, the template indicates that the entire screen in the corresponding multi-video signal preview screen only displays PGM, PVW or INPUT, that is, only one of the current output screen, preview output screen and input screen is displayed.

As shown in Figure 3B, the template indicates that the left half of the corresponding multi-video signal preview screen displays PGM, that is, the current output screen. The right half of the screen is divided into 4 rows and 2 columns, a total of 8 The small rectangular picture of, displays the input picture corresponding to 8 video signal sources in sequence.

As shown in Figure 3C, the template indicates that the upper half of the corresponding multi-video signal preview screen displays PGM, that is, the current output screen. The bottom half of the screen is divided into 2 rows and 4 columns, a total of 8 The small rectangular picture of, displays the input picture corresponding to 8 video signal sources in sequence.

As shown in Figure 3D, the template indicates that the left half of the corresponding multi-video signal preview screen is divided into two small rectangular screens distributed on the left and right, respectively displaying PVW and PGM, that is, the preview output screen And the current output screen, the right half of the screen is divided into 4 rows and 2 columns, a total of 8 small rectangular screens, which sequentially display the input images corresponding to the 8 video signal sources.

As shown in Figure 3E, the template indicates that the top half of the corresponding multi-video signal preview screen is divided into two small rectangular screens distributed up and down, respectively displaying PGM and PVW, that is, the current output screen And the preview output picture, the lower part of the picture is divided into 2 rows and 4 columns, a total of 8 small rectangular pictures, which sequentially display the input pictures corresponding to the 8 video signal sources.

As shown in Figure 3F, the template indicates that the upper half of the corresponding multi-video signal preview screen is divided into two small rectangular screens distributed on the left and right, respectively displaying PVW and PGM, that is, the preview output screen As with the current output picture, the lower part of the picture is divided into 2 rows and 4 columns, a total of 8 small rectangular pictures, which sequentially display the input pictures corresponding to the 8 video signal sources.

Assuming that the selected multi-video signal preview template is the template in FIG. 3F, the layout parameters of the selected multi-video signal preview template are described in detail below with reference to FIG. 4: preview template window parameters, The preview template window corresponds to the signal source and line parameters of the preview template. In Fig. 4, 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9 marked in the upper right corner of each window are used to represent each window.

Wherein, the preview template window parameters include: the starting point coordinates of the preview template window, the height of the preview template window, and the width of the preview template window. As shown in Figure 4, the starting point coordinates of the preview template window store the starting point of each window in Figure 4, such as the coordinate value of the upper left corner of each window. For example, the coordinate value of the starting point a of window 0 is (x=0, y=0 ); Preview template window height and preview template window width respectively store the width and height information of the window. For example, the width w and height h of window 0 are 1/2 respectively. It is worth mentioning here that the height of the preview template window The width of the preview template window is a proportional parameter, not an absolute parameter. For example, the width of window 0 is 1/2, which means that the width of window 0 accounts for 1/2 of the width of the entire preview monitor. Similarly, the height of window 0 is 1/2 means that the ratio of the height of window 0 to the resolution of the entire preview display is 1/2. Therefore, the parameters of the window 0 can be expressed as (x=0, y=0, w=1/2, h=1/2), for example.

The preview template line parameters include: the starting point coordinates of the preview template line, the length of the preview template line and the width of the preview template line. As shown in Figure 4, the starting point coordinates of the preview template line are the starting points of the lines in Figure 4, such as the coordinates of the left end of the horizontal line and the upper end of the vertical line. For example, the starting point of the line bc is the coordinate value of the left end b Is (x=0, y=3/4); preview template line length and preview template line width. For example, the length and width of line bc are 1 and 2, respectively. It is worth mentioning here that the line length of preview template It is a proportional parameter, not an absolute parameter. The length of line bc is 1 which means that the ratio of the actual length of line bc to the width resolution of the entire preview display is 1. Therefore, the parameters of the horizontal line bc can be expressed as (x=0, y=3/4, w=1, h=2px), where px is a pixel. The line width of the preview template, that is, the thickness of the line, is an absolute parameter. In addition, it is worth noting that for horizontal lines, w represents the length of the line, h represents the width of the line, and the value of the line length is the ratio of the actual length of the line to the width of the entire preview display; for vertical lines, h represents the length of the line, w Represents the line width, the value of the line length is the ratio of the actual length of the line to the length of the entire preview display. For example, the parameters of the vertical line de in FIG. 4 can be expressed as (x=3/4, y=1/2, w=2px, h=1/2).

As shown in FIG. 2, a multi-video signal preview system 20 provided by another embodiment of this application. Including: video processing equipment 21 and preview display 23. Wherein, the video processing device 21 includes, for example, a single monitoring video output interface 211 (for example, an HDMI video output interface or a DVI video output interface). The video processing device 21 is used to perform a multi-video signal preview method to obtain a multi-video signal preview screen and pass The single monitoring video output interface 211 outputs multiple video signal preview images. The preview display 23 is configured to receive and display the multiple video signal preview images output by the single monitoring video output interface 211. Specifically, the multi-video signal preview method adopts, for example, the multi-video signal preview method 10 described in the foregoing embodiment. For a specific process, refer to the detailed description of the foregoing embodiment, which will not be repeated here. The video processing device 21 includes, for example, ARM (Advanced RISC Machines) and FPGA (Field-Programmable Gate Array). The video processing device 21 is implemented based on the ARM+FPGA architecture. The video processing device 21, for example, also includes Input detection module, image processing module, image output module, video encoder, video decoder, and preview module that implements multi-video signal preview method 10, etc.

As shown in FIG. 6, there is a computer-readable medium provided by another embodiment of the present application. The computer-readable medium 40 stores computer-readable instructions. For the instructions of the multi-video signal preview method, for the specific flow, please refer to the detailed description of the foregoing embodiment, which will not be repeated here.

5A, 5B, and 5C are respectively a schematic diagram of the preview effect achieved by using the multi-video signal preview template shown in FIGS. 3A, 3B, and 3C as the selected multi-video signal preview template. Specifically, as shown in FIG. 5A, the multi-video signal preview template shown in FIG. 3A is used as the selected multi-video signal preview template, and the corresponding multi-video signal preview screen only displays the current output screen and preview output One of the screen and the input screen. As shown in Figure 5B, the multi-video signal preview template shown in Figure 3B is used as the selected multi-video signal preview template, and the left half of the obtained multi-video signal preview screen displays the current output screen. Half of the picture is divided into 4 rows and 2 columns, a total of 8 small rectangular pictures, which sequentially display the input pictures corresponding to the 8 video signal sources. As shown in Figure 5C, the multi-video signal preview template shown in Figure 3C is used as the selected multi-video signal preview template, and the upper half of the obtained multi-video signal preview screen displays the current output screen. Half of the picture is divided into 2 rows and 4 columns, a total of 8 small rectangular pictures, which sequentially display the input pictures corresponding to the 8 video signal sources.

In summary, the foregoing embodiment of the present application integrates multiple input video signal materials and multiple output video signal materials by calling a selected multi-video signal preview template to obtain a multi-video signal preview screen, and a single monitoring video The output interface outputs the multi-video signal preview picture to the preview display for display. By selecting different multi-video signal preview templates as the selected multi-video signal preview templates, it can be implemented on a single video output interface Centralized monitoring of input, output and pre-output video of video processing equipment, and flexible switching of a variety of multi-video signal preview screen layout modes, makes multi-video signal preview screen effects more flexible and diverse.

In the several embodiments provided in this application, it should be understood that the disclosed system, device and/or method may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units/modules is only a logical function division. In actual implementation, there may be other division methods, for example, multiple units or modules may be Combined or can be integrated into another system, or some features can be ignored or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.

The unit/module described as a separate component may or may not be physically separated, and the component displayed as a unit/module may or may not be a physical unit, that is, it may be located in one place, or may be distributed to multiple channels. On the network unit. Some or all of the units/modules may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.

In addition, each functional unit/module in each embodiment of the present application may be integrated into one processing unit/module, or each unit/module may exist alone physically, or two or more units/modules may be integrated into one. Unit/module. The above-mentioned integrated unit/module can be realized in the form of hardware, or in the form of hardware plus software functional unit/module.

The above-mentioned integrated unit/module implemented in the form of a software functional unit/module may be stored in a computer readable storage medium. The above-mentioned software functional unit is stored in a storage medium and includes several instructions to make one or more processors of a computer device (which may be a personal computer, a server, or a network device, etc.) execute the methods described in the various embodiments of this application Part of the steps. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disks or optical disks, etc., which can store program codes Medium.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the application, not to limit them; although the application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions recorded in the foregoing embodiments are modified, or some of the technical features are equivalently replaced; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

A multi-video signal preview method includes:

Obtain multiple input video signal materials from multiple video signal sources, and perform video processing on the multiple input video signal materials to obtain multiple output video signal materials;

Provide selected multi-video signal preview templates and preview displays;

Calculated according to the layout parameters of the selected multi-video signal preview template, the resolution of the preview display, the attribute information of the multiple input video signal materials, and the attribute information of the multiple output video signal materials Layout parameters of multi-video signal preview screen;

Performing integration processing on the multiple input video signal materials and the multiple output video signal materials according to the layout parameters of the multiple video signal preview images to obtain a multiple video signal preview images;

The multi-video signal preview picture is output to the preview display through a single monitoring video output interface for display.
The multi-video signal preview method according to claim 1, wherein said inputting multiple video signal sources to obtain multiple input video signal materials comprises:

Performing split processing on part or all of the multiple video signal sources to obtain multiple sub-video signal sources;

The plurality of input video signal materials include: the plurality of sub video signal sources and a video signal source that has not undergone the split processing among the plurality of video signal sources.
The multi-video signal preview method according to claim 1, wherein the layout parameters of the selected multi-video signal preview template include: preview template window parameters, signal source corresponding to the preview template window, and preview Template line parameters.
The multi-video signal preview method of claim 3, wherein the preview template window parameters include: the start point coordinates of the preview template window, the height of the preview template window, and the width of the preview template window; the preview template line The parameters include: the starting point coordinates of the preview template line, the length of the preview template line and the width of the preview template line.
The multi-video signal preview method of claim 4, wherein the start point coordinates of the preview template window, the height of the preview template window, the width of the preview template window, the start coordinates of the line of the preview template, The line length of the preview template is a relative parameter; the line width of the preview template is an absolute parameter.
The multi-video signal preview method according to claim 1, wherein the multi-video signal preview picture comprises: at least one of the input video signal material and/or at least one of the output video signal material.
The multi-video signal preview method of claim 5, wherein the layout parameters of the selected multi-video signal preview template, the resolution of the preview display, and the multiple input video signals The attribute information of the material and the attribute information of the multiple output video signal materials are calculated to obtain the layout parameters of the multi-video signal preview picture, including:

In response to a user selection operation, selecting a multi-video signal preview template to obtain the layout parameters of the selected multi-video signal preview template;

Calculating the resolution size corresponding to each window in the multi-video signal preview template according to the resolution of the preview display and the layout parameters of the selected multi-video signal preview template;

According to the attribute information of the multiple input video signal materials, the resolution size of the windows in the multi-video signal preview template corresponding to the multiple input video signal materials, and the attributes of the multiple output video signal materials Information, the resolution size of the windows in the multi-video signal preview template corresponding to the plurality of output video signal materials, respectively, and the corresponding values of the plurality of input video signal materials and the plurality of output video signal materials are calculated Scaling parameters;

The scaling parameter and the starting point coordinates of the preview template window corresponding to each input video signal material and each output video signal material are used as the layout parameters of the multi-video signal preview picture.
A multi-video signal preview system, including:

The video processing device includes a single monitoring video output interface, and the video processing device is used to execute the multi-video signal preview method according to any one of claims 1-7 to obtain the multi-video signal preview picture and pass the The single monitoring video output interface outputs the multi-video signal preview picture;

The preview display is used to receive and display the multiple video signal preview images output by the single monitoring video output interface.
8. The multi-video signal preview system according to claim 8, wherein the plurality of multi-video signal preview templates are pre-stored in the video processing device.
A computer-readable medium, wherein the computer-readable medium stores computer-readable instructions, and the computer-readable instructions include instructions for executing the multi-video signal preview according to any one of claims 1 to 7. Method of instruction.