WO2021207979A1 - 处理视频的装置和系统 - Google Patents

处理视频的装置和系统 Download PDF

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Publication number
WO2021207979A1
WO2021207979A1 PCT/CN2020/084967 CN2020084967W WO2021207979A1 WO 2021207979 A1 WO2021207979 A1 WO 2021207979A1 CN 2020084967 W CN2020084967 W CN 2020084967W WO 2021207979 A1 WO2021207979 A1 WO 2021207979A1
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Prior art keywords
video
preview
module
playback
zoom
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PCT/CN2020/084967
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English (en)
French (fr)
Inventor
苗少峰
周晶晶
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西安诺瓦星云科技股份有限公司
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Priority to PCT/CN2020/084967 priority Critical patent/WO2021207979A1/zh
Priority to CN202080099583.1A priority patent/CN115380539B/zh
Publication of WO2021207979A1 publication Critical patent/WO2021207979A1/zh

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration
    • G06T5/50—Image enhancement or restoration using two or more images, e.g. averaging or subtraction
    • 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
    • H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
    • 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

Definitions

  • This application relates to the field of video display, specifically, to one.
  • VPU video processing unit
  • the video output card cannot output any video source and the technical problem of resource scheduling is more limited, no effective solution has been proposed yet.
  • the embodiment of the present application provides a method to at least solve the technical problem that the video processing device in the related art groups the video sources in a fixed manner, which causes the video output card to be unable to output any video source and has many resource scheduling restrictions.
  • a system for processing video including: at least one first video output card, each first video output card includes a first processor, and the first processor includes a plurality of first video output cards.
  • a zoom module and at least one first overlay module wherein the first overlay module is connected to multiple first zoom modules, and the multiple first zoom modules are configured to perform zoom processing on multiple first video sources to obtain multiple first zooms Video, the first superimposing module is configured to superimpose the received first zoomed video to obtain the first superimposed video;
  • the second video output card includes a second processor and at least one output interface, wherein the second processor is connected to the output
  • the second processor includes a plurality of second zoom modules and at least one second superimposing module.
  • the second superimposing module is connected to the plurality of second zoom modules.
  • the source performs scaling processing to obtain multiple second scaled videos;
  • the switch is connected to each of the first video output card and the second video output card, and is set to transmit the first superimposed video to the second video output card;
  • the second superimposing module is configured to superimpose the received first superimposed video and the received second zoomed video to obtain the second superimposed video, and the output interface is set to output the second superimposed video.
  • the second video output card if the number of output interfaces is multiple, the number of second stacking modules is multiple, and the number of output interfaces is equal to the number of second stacking modules, where each output The interface corresponds to a second superimposing module, and the output interface is set to output the second superimposed video superimposed by the corresponding second superimposing module.
  • the multiple first video sources include multiple first playback video sources and multiple first preview video sources
  • the multiple first zoom modules include multiple first playback zooms.
  • the first overlay module includes a first play overlay module and a first preview overlay module, wherein each first play overlay module and multiple first play zoom modules are connected, each A preview overlay module is connected to multiple first preview zoom modules, and multiple first playback zoom modules are configured to perform zoom processing on multiple first playback video sources to obtain multiple first playback zoom videos, and the first playback overlay module is set In order to superimpose the received first playback zoom video to obtain the first superposition and then playback video;
  • multiple first preview zoom modules are set to perform zoom processing on multiple first preview video sources to obtain multiple first preview zoom videos,
  • a preview overlay module is set to overlay the received first preview zoom video to obtain the first overlay and preview video;
  • multiple second video sources include multiple second playback video sources and multiple channels
  • the second preview video source, the plurality of second zoom modules include a plurality of second playback zoom modules
  • the at least one first video output card includes a first group of first video output cards and a second group of first video output cards: in each first video output card of the first group of first video output cards, more The first video sources are multiple first playback video sources, the multiple first zoom modules are multiple first playback zoom modules, and the first overlay modules are first playback overlay modules, where each first playback overlay module and The multiple first playback zoom modules are all connected, the multiple first playback zoom modules are configured to perform zoom processing on multiple first playback video sources to obtain multiple first playback zoom videos, and the first playback overlay module is configured to Play the zoomed video for superposition, and then play the video after the first superposition is obtained; in each first video output card of the second group of first video output cards, multiple first video sources are multiple first preview video sources, and multiple The first zoom modules are multiple first preview zoom modules, and the first overlay modules are first preview overlay modules.
  • Each of the first preview overlay modules is connected to the multiple first preview zoom modules, and the multiple first playback The zoom module is configured to perform zoom processing on multiple first preview video sources to obtain multiple first preview zoom videos, and the first preview overlay module is configured to overlay the received first preview zoom video to obtain the first overlay preview video;
  • multiple second video sources include multiple second playback video sources and multiple second preview video sources
  • multiple second zoom modules include multiple second playback zoom modules and multiple second Preview zoom module
  • the second overlay module includes a second play overlay module and a second preview overlay module, where each second play overlay module and multiple second play zoom modules are connected, each of the second preview overlay module and multiple The second preview zoom modules are all connected;
  • multiple second playback zoom modules are set to perform zoom processing on multiple second playback video sources to obtain multiple second playback zoom videos, and multiple second preview zoom modules are set to perform multiple Second
  • the preview video source is scaled to obtain multiple first preview zoomed videos;
  • the switch is set to superimpose the first video output from each first video output card of the first group of first video output cards and transmit the
  • the play video is transmitted to the second play and overlay module, and the The first superimposed preview video output by each first video output card of the two groups of first video output cards is transmitted to the first preview superimposition module of the next first video output card, until the second group of first video output card
  • the first superimposed preview video output by the last first video output card is transmitted to the second preview superimposition module; wherein the second playback superimposition module is set to output the received second playback zoom video and the first group of first videos
  • the second playback superimposition module is set to output the received second playback zoom video and the first group of first videos
  • the second preview superimposing module is set to scale the received second preview video and the second group of first videos
  • the last of the output card The first superimposition of the first video output card output After the preview video is superimposed, the second superimposed preview video is obtained, and the output interface is set
  • the second video output card if the number of output interfaces is multiple, the number of second overlay modules is multiple, and the number of output interfaces, the number of second playback overlay modules, and the second preview overlay module
  • Each output interface corresponds to a second play overlay module and a second preview overlay module, and the output interface is set to output the second overlay superimposed by the corresponding second play overlay module to play the video or through the corresponding The second preview superimposition module superimposes the preview video after the second superimposition.
  • the first video output card and the second video output card use the same synchronization source.
  • the synchronization source is from a synchronization signal generator, or the synchronization source is the display timing of the second video output card.
  • an apparatus for processing video including: a processor, including a plurality of zoom modules and at least one overlay module, the overlay module is connected to the multiple zoom modules, and the multiple zoom modules Set to perform scaling processing on multiple video sources to obtain multiple scaled videos, and the overlay module is set to superimpose the received scaled video to obtain the superimposed video; at least one output interface, which is connected to the processor, is set to output after superimposition video.
  • the number of output interfaces is multiple, the number of stacking modules is multiple, and the number of output interfaces is equal to the number of stacking modules, where each output interface corresponds to one stacking module, and the output interface is set to output through The superimposed video superimposed by the corresponding superimposing module.
  • the multiple video sources include multiple playback video sources and multiple preview video sources
  • the multiple zoom modules include multiple playback zoom modules and multiple preview zoom modules
  • the overlay module includes a playback overlay module and a preview overlay module.
  • Each playback overlay module is connected to multiple playback zoom modules
  • each preview overlay module is connected to multiple preview zoom modules
  • multiple playback zoom modules are set to perform zoom processing on multiple playback video sources to obtain multiple playback zoom videos
  • the playback overlay module is set to superimpose the received playback zoom video, and the playback video is superimposed
  • multiple preview zoom modules are set to perform zoom processing on multiple preview video sources to obtain multiple preview zoom videos
  • the preview overlay module is set to receive
  • the preview zoomed video is superimposed, and the superimposed preview video is obtained
  • the output interface is set to output the superimposed playback video or the superimposed preview video.
  • each output interface corresponds to a play overlay module and a preview overlay module, and the output interface is set to output the overlay play video superimposed by the corresponding play overlay module or the overlay preview video superimposed by the corresponding preview overlay module.
  • a computer-readable storage medium including instructions, which when run on a computer, cause the computer to execute the following instructions: perform zoom processing on multiple video sources to obtain multiple A zoomed video; superimpose the received zoomed video to get the superimposed video; output the superimposed video.
  • a computer-readable storage medium including instructions, which when run on a computer, cause the computer to execute the following instructions:
  • the first zoom module of a video output card performs zoom processing on multiple first video sources to obtain multiple first zoomed videos; superimposes the first zoomed video received by the first superimposing module of each first video output card, Obtain the first superimposed video of each first video output card; transmit the first superimposed video to the second video output card through the switch, where the multiple second zoom modules of the second video output card pair multiple channels
  • the two video sources perform scaling processing to obtain a plurality of second zoomed videos.
  • the superposition module of the second video output card superimposes the received first superimposed video and the received second scaled video to obtain the second superimposed video; and output the second superimposed video. Video after overlay.
  • the first superimposition module is connected to a plurality of first zoom modules
  • the second superimposition module is connected to a plurality of second zoom modules.
  • the first superimposition module schedules a plurality of first zoom modules connected to it.
  • the output of any first zoomed video source is dispatched by the second overlay module to any second zoomed video source output by multiple second zooming modules connected to it.
  • the switch is used to expand the number of video sources and solve the video processing in related technologies.
  • the device groups the video sources in a fixed manner, which causes the video output card to be unable to output any video source, and the technical problems of resource scheduling are more limited, which achieves the purpose of flexible scheduling of video sources and presents more diversified video effects.
  • FIG. 1 is a schematic diagram of an optional video processing apparatus according to Embodiment 1 of the present application.
  • FIG. 2 is a schematic diagram of another optional video processing device according to Embodiment 1 of the present application.
  • FIG. 3 is a schematic diagram of another optional video processing apparatus according to Embodiment 1 of the present application.
  • FIG. 4 is a schematic diagram of an optional video processing system according to Embodiment 2 of the present application.
  • FIG. 5 is a schematic diagram of another optional video processing system according to Embodiment 2 of the present application.
  • FIG. 6 is a schematic diagram of another optional video processing system according to Embodiment 2 of the present application.
  • FIG. 7 is a schematic diagram of another optional video processing system according to Embodiment 2 of the present application.
  • FIG. 8 is a schematic diagram of a system for realizing synchronous output by an optional external synchronization source according to Embodiment 2 of the present application.
  • Fig. 9 is a schematic diagram of a system for realizing synchronous output according to an optional internal synchronization source according to Embodiment 2 of the present application.
  • FIG. 1 is a schematic diagram of an apparatus for processing video according to an embodiment of the present application.
  • the drawn architecture is only an example of a suitable environment, and does not impose any limitation on the scope of use or functions of this application. Nor should the device be interpreted as having any dependency or requirement on any component or combination shown in FIG. 1.
  • the video processing device includes:
  • the processor includes multiple zoom modules and at least one overlay module.
  • the overlay module is connected to the multiple zoom modules.
  • the multiple zoom modules are set to perform zoom processing on multiple video sources to obtain multiple zoomed videos.
  • the overlay module is set to receive The zoomed video is superimposed, and the superimposed video is obtained.
  • the above-mentioned video processing device may be a video splicer, a video switcher, or a video processor and other equipment used for video processing;
  • the processor may be a field programmable logic gate array ( Field Programmable Gate Array, FPGA, Digital Signal Process (DSP), ARM processor (Advanced RISC Machines) and any other chips with digital processing functions are not limited here.
  • multiple scaling modules and at least one superimposing module are provided on the processor.
  • the zoom module can reduce or enlarge multiple video streams into a unified video frame for subsequent processing.
  • each zoom module can only zoom one video source.
  • each overlay module is connected to all zoom modules. Since the overlay module is connected to all the zoom modules, the overlay module can overlay the zoomed videos from all the zoom modules, and can also superimpose the zoomed videos from all the zoom modules arbitrarily according to the actual needs of the video source. In short, the superimposed video source is the video source received by the superimposing module.
  • At least one output interface which is connected to the processor, is set to output the superimposed video.
  • the foregoing output interface may be a high-definition multimedia interface (HDMI), a display interface (DisplayPort, DP), and the like.
  • HDMI high-definition multimedia interface
  • DP display interface
  • setting the output interface to output the superimposed video can be understood as: the video output by the output interface is obtained based on the superimposed video.
  • the processor is an FPGA
  • the video source is scaled and superimposed by the FPGA
  • it also needs to be encoded by an encoding chip to obtain an encoded video
  • the output interface outputs the encoded video.
  • zoom modules and one overlay module are set on the processor of the video splicer.
  • Each zoom module scales one video source, and multiple zoom modules perform one-to-one scaling on multiple video sources, reducing or enlarging the multiple video sources into a unified format zoom video.
  • the superimposition module is connected to all the zoom modules, so it can superimpose part or all of the zoomed video. Which zoom modules output the zoomed video to be superimposed is determined by the zoomed video received by the superimposing module. The superimposed video is output by the output interface and then transmitted to the display device.
  • the superimposition module of the present application can superimpose and zoom videos according to user needs, achieve the purpose of scheduling any video source, and realize the layer expansion on the display device. If more layers need to be displayed, it is only necessary to connect more video processing devices of the embodiment of the present application according to actual needs. It is easy to notice that since the zoom module and the overlay module can be integrated in separate processors, it avoids replacing the more resource-rich main control chip in the video processing device, and at the same time realizes the flexible configuration of the video source.
  • the device for processing video includes: a processor, including multiple zoom modules and at least one overlay module, the overlay module is connected to the multiple zoom modules, and the multiple zoom modules are configured to zoom multiple video sources
  • the superimposing module is set to superimpose the received zoomed videos to obtain the superimposed video
  • at least one output interface which is connected to the processor, is set to output the superimposed video.
  • the overlay module of the present application is connected to multiple zoom modules, and arbitrary video sources are scheduled through the overlay module, which solves the problem that the video processing equipment in the related technology groups the video sources in a fixed manner, resulting in the video output card not being able to output arbitrary video sources.
  • Video sources, resource scheduling restrictions are more technical issues, to achieve the purpose of flexible scheduling of video sources, presenting more diversified video effects.
  • the number of output interfaces is multiple, the number of stacking modules is multiple, and the number of output interfaces is equal to the number of stacking modules, where each output interface corresponds to one stacking module, and the output interface is set to output through The superimposed video superimposed by the corresponding superimposing module.
  • FIG. 2 shows a schematic diagram of the structure of a video processing device with two output interfaces.
  • each output interface corresponds to a stacking module.
  • the overlay module A is connected to the output interface A
  • the overlay module B is connected to the output interface B.
  • the 16 scaling modules are connected to each overlay module, each overlay module only scales the received The video is superimposed. Therefore, the output interface A can output the superimposed video A superimposed by the superimposing module A, and the output interface B can output the superimposed video B superimposed by the superimposing module B.
  • the overlay module A receives an instruction to superimpose a certain channel of zoomed video, the zoomed video of this channel cannot be superimposed by the overlay module B at the same time.
  • Each zoomed video can only be superimposed by one superimposition module, and cannot be superimposed by two at the same time. Module overlay.
  • the multiple video sources include multiple playback video sources and multiple preview video sources
  • the multiple zoom modules include multiple playback zoom modules and multiple preview zoom modules
  • the overlay module includes a playback overlay module.
  • each playback overlay module is connected to multiple playback zoom modules
  • each preview overlay module is connected to multiple preview zoom modules.
  • the above-mentioned playback video source may be a video used for broadcasting
  • the above-mentioned preview video source may be a video used for previewing. Since the main function of the video switcher is to monitor the preview video and the playback video to switch the preview video to the current playback video, the video source includes the playback video source for playback and the preview video source for preview.
  • multiple playback zoom modules are set to perform zoom processing on multiple playback video sources to obtain multiple playback zoom videos
  • the playback overlay module is set to superimpose the received playback zoom videos to obtain the superimposed playback video.
  • the above-mentioned superimposed playback video may be a video to be broadcast on the display device.
  • multiple preview zoom modules are set to perform zoom processing on multiple preview video sources to obtain multiple preview zoom videos
  • the preview overlay module is set to superimpose the received preview zoom videos to obtain the superimposed preview videos.
  • the above-mentioned preview video (Preview, PVW) after superimposition may be a video to be previewed on a monitoring device.
  • the playback overlay module can overlay the received playback zoom video
  • the preview overlay module can overlay the received preview zoom video to achieve both preview and playback effects.
  • the zoomed video output by the zoom module is used for previewing, it cannot be used for playback at the same time, and if the zoomed video output by the zooming module is used for playback, it cannot be used for previewing at the same time.
  • the video splicer may not have a preview function, only one overlay module may be needed to schedule any zoomed video for playback.
  • the video switcher adds preview content, so at least two overlay modules are required. After the playback video source and preview video source are allocated, the playback overlay module can freely schedule part or all of the playback video source, and the preview overlay module can freely schedule part or all of the preview video source.
  • the output interface is set to output superimposed playback video or superimposed preview video.
  • PVW is mainly used in conjunction with PGM, because in the studio, the actual broadcast PGM needs to be previewed in advance on the monitoring equipment, and only those that meet the playback requirements can be switched to PGM and output through the output interface. Therefore, the output interface can only output one channel of video.
  • the superimposed preview video and superimposed playback video can be switched between preview and playback through the mix switch module. That is to say, the preview video after superimposition can be selected for playback or after the superimposition can be selected through the mix switch module.
  • the video is played for playback, and the mix switching module can be set in the above-mentioned processor.
  • the display device displays the superimposed playback video
  • the monitoring device displays the superimposed preview video. If the superimposed preview video meets the broadcast conditions, it is immediately switched to the playback video and displayed on the display device. At this time, the preview video after being superimposed is converted to a playback video, and the previous playback video after being superimposed is converted into a preview video.
  • the preview video can also be displayed through the console after being superimposed. Only the preview video displayed on the console is in the editing state. In order to see more intuitive video effects, the preview video after superimposition can be monitored through the pre-monitoring card.
  • the pre-monitoring card can monitor all video sources, PGM and PVW.
  • the above-mentioned device may further include: a preview card, which is respectively connected to the output terminal of the multi-channel video source and the output terminal of the superimposing module, and is set to monitor video data of at least one of the following: video source, superimposed playback video, and Preview the video after overlaying.
  • a preview card which is respectively connected to the output terminal of the multi-channel video source and the output terminal of the superimposing module, and is set to monitor video data of at least one of the following: video source, superimposed playback video, and Preview the video after overlaying.
  • the solution of this embodiment can monitor more video data through the pre-monitoring card.
  • the pre-monitoring card can be connected to the output terminal of the multi-channel video source and the output terminal of the overlay module, so the pre-monitoring card can display the original multi-channel video source, superimpose the superimposed module and play the video after superimposition. Preview the video to facilitate the staff to view the various video data and control various video screens.
  • each output interface corresponds to a play overlay module and a preview overlay module, and the output interface is set to output the overlay play video superimposed by the corresponding play overlay module or the overlay preview video superimposed by the corresponding preview overlay module.
  • each output interface corresponds to a playback overlay module and a preview overlay module.
  • output interface A can output the overlay of play overlay module A and play video A or Preview the video A after the superimposition superimposed by the preview superimposition module
  • the output interface B can output the superimposed video B superimposed by the playback superimposition module B or the superimposed preview video B superimposed by the preview superimposition module.
  • the staff is responsible for scheduling, avoiding the limitation of grouping of video sources. In this way, multiple sets of superimposed preview videos and superimposed playback videos can be switched at the same time, so as to adapt to complex scenes where multiple display devices are working at the same time.
  • Fig. 3 shows a schematic diagram of an optional video processing device.
  • there are 8 zoom modules in the video output card there are 8 zoom modules in the video output card, each zoom module zooms a video source, and the overlay module is connected to each zoom module.
  • the figure only shows the input and output relationship between the zoomed video and the overlay module in the current overlay mode.
  • video sources 1-4 are used for playback
  • zoom modules 1-4 are playback zoom modules
  • overlay module 1 is a playback overlay module
  • video sources 5-8 are used for preview
  • zoom modules 5-8 are preview zoom modules
  • overlay modules 2 is the preview overlay module.
  • the superposition module receives a zoomed video, it will superimpose the zoomed video, otherwise it will not be superimposed.
  • each overlay module can freely overlay the zoomed video of all zoom modules connected to it, so as to achieve the purpose of arbitrary scheduling of output layers.
  • the overlay module 1 can freely schedule the scaled video sources 1-4
  • the overlay module 2 can freely schedule the scaled video sources 5-8.
  • the output interface outputs superimposed zoomed video 1-4 or superimposed zoomed video 5-8.
  • a single output card can also support two output interfaces. Under the condition that only one output interface is enabled, all video sources can be dispatched to the enabled output interface. Under the condition that multiple output interfaces are enabled, The specific interface of the zoom video distribution can be scheduled by the staff according to actual needs, and is not restricted by the grouping of video sources at all.
  • Fig. 4 is a schematic diagram of a video processing system according to an embodiment of the present application. As shown in Fig. 4, the system includes:
  • each first video output card includes a first processor, the first processor includes a plurality of first scaling modules and at least one first superimposing module, wherein the first superimposing module and the plurality of second One zoom module is connected, multiple first zoom modules are configured to perform zoom processing on multiple first video sources to obtain multiple first zoomed videos, and the first superimposing module is configured to superimpose the received first zoomed video to obtain the first zoomed video. A superimposed video.
  • the above-mentioned video processing system can be a video splicer or a video switcher;
  • the above-mentioned first video output card can be independent of the video processing equipment, and the video output card can integrate zoomed video, superimposed video, Functions such as decoding, filtering, and real-time transmission support video streams of various quality levels;
  • the above-mentioned first processor can be any chip with digital processing functions such as FPGA, DSP, ARM, etc., which is not limited here.
  • a plurality of first scaling modules and at least one first superimposing module are provided on the first processor.
  • the first zoom module can reduce or enlarge the multiple video streams into a unified video frame for subsequent processing.
  • each first zoom module may only zoom one video source.
  • each first superimposing module is connected to all the first zooming modules. Since the first superimposing module is connected to all the first zooming modules, the first superimposing module can superimpose the first zoomed video from all the first zooming modules, or according to the actual demand for the first video source, the first zoomed video from all the Arbitrarily superimposed on the first zoomed video of the first zooming module. In short, the superimposed video source is the first video source received by the first superimposing module.
  • the second video output card includes a second processor and at least one output interface, wherein the second processor is connected to the output interface, and the second processor includes a plurality of second scaling modules and at least one second superimposing module.
  • the module is connected to multiple second zoom modules, and the multiple second zoom modules are configured to perform zoom processing on multiple second video sources to obtain multiple second zoomed videos.
  • first video source and the second video source in this application may be the same video source, or may be different video sources.
  • the detailed description of the above-mentioned second video output card may refer to the above description of the first video output card, which will not be repeated here for brevity.
  • the foregoing output interface may be a high-definition multimedia interface (HDMI), a display interface (DisplayPort, DP), and the like.
  • HDMI high-definition multimedia interface
  • DP display interface
  • multiple second scaling modules and at least one second superimposing module are provided on the second processor.
  • the second zoom module can reduce or enlarge the multiple video streams into a unified video frame for subsequent processing.
  • each second zoom module can only zoom one video source.
  • first video output card and the second video output card may also be the same.
  • first video output card may also include an output interface, but it is not used. In this way, it can be more adapted to the flexible configuration of resources.
  • the switch is connected to each of the first video output card and the second video output card, and is configured to transmit the first superimposed video to the second video output card; wherein, the second superimposing module is configured to superimpose the received first video
  • the post video and the received second zoomed video are superimposed to obtain the second superimposed video
  • the output interface is set to output the second superimposed video.
  • the above-mentioned switch may use a crosspoint (CrossPoint) chip.
  • the CrossPoint chip supports the exchange and backup of video data, and local signal damage will not affect the normal operation of other parts.
  • the switch can transmit video data between the first video output card and the second video output card to expand the number of video sources.
  • each second superimposing module is connected to all second scaling modules.
  • the second zoom module 1 in Figure 4 is actually also connected to the second overlay module, but because the video after the first overlay occupies one input channel of the second overlay module, the second overlay module will receive one less second overlay module. Zoom the video. Therefore, the second superimposing module can superimpose the second zoomed videos from all the second zooming modules, and can also superimpose the second zoomed videos from all the second zooming modules arbitrarily according to actual requirements for the second video source.
  • the superimposed video source is the video source received by the second superimposing module. Wherein, the received video source includes the second zoomed video and the first superimposed video.
  • multiple first video output cards and one second video output card are cascaded through a switch. After the first superimposed video of the first first video output card is superimposed, the video is not displayed, but is mapped to the input channel of the first superimposed module of the second first video output card through the switch, as a The first video input source is superimposed with multiple first zoomed videos scaled by the second first video output card to achieve the purpose of expanding the layer. Finally, the switch transmits the first superimposed video output by the last first video output card to the second superimposition module of the second video output card, and superimposes the second zoomed video to obtain the final second superimposed video. Then output the second superimposed video through the output interface.
  • two first video output cards and one second video output card are included.
  • the switch transmits the first superimposed video 1 including 8 layers output by the first video output card 1 to the superimposing module of the first video output card 2. Since the first superimposed video 1 occupies one channel of the superimposing module of the first video output card 2, the superimposing module of the first video output card 2 can superimpose 7 channels of zoomed videos in addition to the first superimposed video 1.
  • a superimposed video 2 includes 13 layers.
  • the switch transmits the first superimposed video 2 to the superimposing module of the second video output card.
  • the superimposed module of the second video output card can superimpose 7 channels of zoomed videos in addition to the first superimposed video 2, so the second superimposes
  • the post video includes a total of 19 layers.
  • the second superimposed video is output by the output interface. Obviously, the addition of the switch greatly expands the number of layers that can be displayed.
  • the first stacking module of the present application is connected to multiple first zooming modules, and the second stacking module is connected to multiple second zooming modules.
  • the first stacking module schedules multiple connected first zooming modules. For any first zoomed video source output by the zoom module, any second zoomed video source output by multiple second zoom modules connected to it is scheduled through the second overlay module, and the number of video sources is expanded by using a switch, which solves the problem of
  • the video processing equipment groups the video sources in a fixed manner, resulting in the video output card not being able to output any video sources, and the technical problem of resource scheduling restrictions, which achieves the purpose of flexible scheduling of video sources and presents more diversified video effects.
  • the second video output card if the number of output interfaces is multiple, the number of second stacking modules is multiple, and the number of output interfaces is equal to the number of second stacking modules, where each output The interface corresponds to a second superimposing module, and the output interface is set to output the second superimposed video superimposed by the corresponding second superimposing module.
  • the second video output card has output interfaces, and each output interface corresponds to a second overlay module.
  • the second superimposing module A is connected to the output interface A
  • the second superimposing module B is connected to the output interface B.
  • the output interface A can preview or play the second superimposed video A output by the second superimposing module A
  • the output interface B The second superimposed video B output by the second superimposing module B can be previewed or played, so that multiple sets of preview videos and/or playing videos can be monitored at the same time, so as to adapt to the scenario where multiple display devices work at the same time.
  • the multiple first video sources include multiple first playback video sources and multiple first preview video sources
  • the multiple first zoom modules include multiple A first playback zoom module and a plurality of first preview zoom modules
  • the first overlay module includes a first playback overlay module and a first preview overlay module, wherein each of the first playback overlay module and the multiple first playback zoom modules are Each first preview overlay module is connected to multiple first preview zoom modules, and the multiple first playback zoom modules are configured to perform zoom processing on multiple first playback video sources to obtain multiple first playback zoom videos.
  • a play overlay module is set to superimpose the received first play zoom video to obtain the first overlay and then play the video; multiple first preview zoom modules are set to perform zoom processing on multiple first preview video sources to obtain multiple first preview video sources.
  • the first preview superimposing module is set to superimpose the received first preview zoomed video to obtain the first superimposed preview video.
  • the multiple second video sources include multiple second playback video sources and multiple second preview video sources
  • the multiple second zoom modules include multiple second playback zoom modules and A plurality of second preview zoom modules
  • the second overlay module includes a second play overlay module and a second preview overlay module, wherein each second play overlay module is connected to the multiple second play zoom modules, and each second preview The overlay module is connected to multiple second preview zoom modules
  • the multiple second playback zoom modules are configured to perform zoom processing on multiple second playback video sources to obtain multiple second playback zoom videos
  • multiple second preview zoom modules are set To obtain multiple second preview zoomed videos in order to perform zoom processing on multiple second preview video sources.
  • the switch is configured to transmit the first superimposed playback video and the first superimposed preview video output by each first video output card to the first playback superimposition module and the second superimposed module of the next first video output card, respectively.
  • a preview superimposition module until the first superimposed playback video and the first superimposed preview video output by the last first video output card are respectively transmitted to the second playback superimposition module and the second preview superimposition module; wherein, the second The playback overlay module is set to overlay the received second playback zoom video and the last first overlay playback video output by the first video output card to obtain the second overlay and then play the video; the second preview overlay module is set to overlay the received The second preview zoom video and the first superimposed preview video output by the last first video output card are superimposed, and the second superimposed preview video is obtained.
  • the output interface is set to output the second superimposed playback video or the second superimposed preview video .
  • Fig. 6 shows a schematic diagram of a video processing system configured according to the foregoing embodiment.
  • the system has a first video output card and a second video output card.
  • PGM1 and PVW1 of the first video output card are mapped to the second video output card through the switch, PGM1 and PVW1 will each occupy one input channel of the superposition module of the second video output card, so that the superposition of the second video output card
  • the module can also superimpose three more layers on the basis of PGM1 and PVW1. There are 7 layers at most on PGM2 or PVW2 displayed by the output interface, which achieves the purpose of layer expansion.
  • the at least one first video output card includes a first group of first video output cards and a second group of first video output cards:
  • each first video output card of the first group of first video output cards the multiple first video sources are multiple first playback video sources, and the multiple first zoom modules are multiple first playback zoom modules.
  • One overlay module is the first play overlay module, where each first play overlay module is connected to multiple first play zoom modules, and the multiple first play zoom modules are configured to perform zoom processing on multiple channels of first play video sources Obtain a plurality of first playback zoom videos, the first playback overlay module is set to superimpose the received first playback zoom videos, and play the video after the first overlay is obtained; each first video in the second group of first video output cards In the output card, the multiple first video sources are multiple first preview video sources, the multiple first zoom modules are multiple first preview zoom modules, and the first overlay module is a first preview overlay module.
  • a preview overlay module is connected to multiple first preview zoom modules, and multiple first playback zoom modules are set to perform zoom processing on multiple first preview video sources to obtain multiple first preview zoom videos, and the first preview overlay module is set To superimpose the received first preview zoom video, and obtain the first superimposed preview video;
  • multiple second video sources include multiple second playback video sources and multiple second preview video sources
  • multiple second zoom modules include multiple second playback zoom modules and multiple second Preview zoom module
  • the second overlay module includes a second play overlay module and a second preview overlay module, where each second play overlay module and multiple second play zoom modules are connected, each of the second preview overlay module and multiple The second preview zoom modules are all connected
  • multiple second playback zoom modules are set to perform zoom processing on multiple second playback video sources to obtain multiple second playback zoom videos
  • multiple second preview zoom modules are set to perform multiple 2. Perform zoom processing on the preview video source to obtain multiple first preview zoom videos
  • the switch is set to transmit the first superimposed playback video output by each first video output card of the first group of first video output cards to the first playback superimposition module of the next first video output card until the first The first superimposed playback video output by the last first video output card of the first group of video output cards is transmitted to the second playback superimposition module, and each first video output card of the second group of first video output cards is output
  • the first superimposed preview video is transmitted to the first preview superimposition module of the next first video output card, until the first superimposed preview video output by the last first video output card of the second group of first video output cards Transmitted to the second preview overlay module; where the second play overlay module is set to play after the received second play zoom video and the first set of the first video output card output from the last first video output card.
  • the second superimposition is obtained and then the video is played.
  • the second preview superimposition module is set to scale the received second preview video and the second group of the first video output card after the last first video output card output.
  • the preview video is superimposed to obtain the second superimposed preview video, and the output interface is set to output the second superimposed playback video or the second superimposed preview video.
  • Fig. 7 shows a schematic diagram of a video processing system configured according to the foregoing embodiment.
  • the system includes a first video output card and a second video output card.
  • the superimposition module of the first video output card 1 supports superimposing all 8 layers. Output the superimposed PGM1 image.
  • the superimposing module of the first video output card 2 supports superimposing all 8 layers and outputting the superimposed PVW1 image.
  • PGM1 and PVW1 can be transmitted to the second video output card through the switch.
  • the second video output card can also superimpose 3 layers on the basis of the superimposed PGM1 or PVW1.
  • the final PGM2 or PVW2 supports 11 layers .
  • the second video output card if the number of output interfaces is multiple, the number of second overlay modules is multiple, and the number of output interfaces, the number of second playback overlay modules, and the second preview overlay module
  • Each output interface corresponds to a second play overlay module and a second preview overlay module, and the output interface is set to output the second overlay superimposed by the corresponding second play overlay module to play the video or through the corresponding The second preview superimposition module superimposes the preview video after the second superimposition.
  • each output interface corresponds to a second playback and superimposition module and a second preview and superimposition module.
  • the output interface A can output the second play overlay
  • the second superimposition superimposed by module A is played after video A or the second superimposed preview video A superimposed by the second preview superimposition module
  • the output interface B can output the second superimposed superimposed second superimposed video B or second superimposed by the second playback superimposition module B.
  • Preview video B after the second superimposition superimposed by the preview superimposition module.
  • the staff is responsible for scheduling, avoiding the limitation of grouping of video sources.
  • multiple sets of superimposed preview videos and superimposed playback videos can be switched at the same time, so as to adapt to complex scenes where multiple display devices are working at the same time.
  • the above-mentioned system may further include: a preview card, which is respectively connected with the output terminals of the first video source, the output terminals of the second video source, the output terminal of the first superimposing module, and the output of the second superimposing module. Terminal connection, set to monitor video data of at least one of the following: first video source, second video source, first superimposed video playback, first superimposed preview video, second superimposed playback video, second superimposed preview video.
  • the solution of this embodiment can monitor more video data through the pre-monitoring card.
  • the preview card can be connected to the output terminals of multiple first video sources, the output terminals of multiple second video sources, the output terminals of the first overlay module, and the output terminals of the second overlay module. It can display the original first video source, second video source, and play video after the first overlay, preview the video after the first overlay, play the video after the second overlay, and preview the video after the second overlay to facilitate the staff to view each video data , Control various video screens.
  • the first video output card and the second video output card use the same synchronization source.
  • the aforementioned synchronization source may be implemented in a Genlock mode.
  • the timing of the video frames transmitted by the video output cards with the overlay relationship must be synchronized, otherwise the overlay cannot be performed.
  • Using the same synchronization source can ensure that the video frames transmitted by each video output card are synchronized.
  • the synchronization source is from a synchronization signal generator, or the synchronization source is the display timing of the second video output card.
  • Fig. 8 shows a schematic diagram of a system in which an optional external synchronization source realizes synchronous output.
  • the synchronization source comes from an external device, such as a Genlock source generator.
  • the Genlock source generator synchronously sends the synchronization signal to each video output card to ensure the timing synchronization of each video output card and provide users with high-quality picture effects without time difference.
  • Fig. 9 shows a schematic diagram of a system in which an optional internal synchronization source realizes synchronous output.
  • the synchronization source comes from the display timing of the second video output card.
  • the display timing of the second video output card is provided to all the previous video output cards (the first video output card), and all the previous video output cards send the superimposed zoomed video according to the display timing to ensure the transmission of each video output card
  • the video frames are synchronized.
  • a computer-readable storage medium including instructions, which when run on a computer, cause the computer to execute the following instructions: a mobile terminal collects at least one image of a spliced screen in a preset lighting mode, Among them, the preset lighting method is to light up the target display unit on the splicing screen; the mobile terminal determines the correction coefficient of the spliced bright and dark lines on the splicing screen based on the position information of the target display unit in the image; the mobile terminal sends the correction coefficient to the display control In order to facilitate the display controller to correct the spliced bright and dark lines according to the correction coefficient.
  • a computer-readable storage medium including instructions, which when run on a computer, cause the computer to execute the following instructions: each first video output card through at least one first video output card
  • the first zoom module performs zoom processing on multiple first video sources to obtain multiple first zoomed videos; superimposes the first zoomed videos received by the first superimposing module of each first video output card to obtain each The first superimposed video of a video output card; the first superimposed video is transmitted to the second video output card through a switch, wherein the multiple second zoom modules of the second video output card perform multiple second video sources
  • the zooming process obtains a plurality of second zoomed videos, and the superposition module of the second video output card superimposes the received first superimposed video and the received second zoomed video to obtain the second superimposed video; and output the second superimposed video.
  • the disclosed technical content can be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units may be a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or may be Integrate into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, units or modules, and may be in electrical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the above-mentioned integrated unit can be implemented in the form of hardware or software functional unit.
  • the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the technical solution of the present application essentially or the part that contributes to the existing technology or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , Including several instructions to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage media include: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk and other media that can store program codes. .
  • the solutions provided in the embodiments of the present application can be applied to the field of video display, and are particularly suitable for scenes of video splicing and video switching.
  • the first superimposition module is connected to a plurality of first zoom modules
  • the second superimposition module is connected to a plurality of second zoom modules.
  • the first superimposition module schedules a plurality of first zoom modules connected to it.
  • the output of any first zoomed video source is dispatched by the second overlay module to any second zoomed video source output by multiple second zoom modules connected to it.
  • the switch is used to double the number of video sources, which solves the problem of related technologies.
  • the video processing equipment groups the video sources in a fixed manner, which causes the video output card to be unable to output any video source, and the technical problem of resource scheduling is more limited, which achieves the purpose of flexible scheduling of video sources.

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Abstract

本申请公开了一种处理视频的装置和系统，该系统包括：至少一个第一视频输出卡，每个第一视频输出卡包括第一处理器，第一处理器包括多个第一缩放模块以及至少一个第一叠加模块，其中，第一叠加模块与多个第一缩放模块均连接，第一叠加模块设置为对接收的第一缩放视频进行叠加，得到第一叠加后视频；第二视频输出卡，包括第二处理器和至少一个输出接口，其中，第二叠加模块与多个第二缩放模块均连接；交换器，与每个第一视频输出卡和第二视频输出卡均连接，设置为将第一叠加后视频传输至第二视频输出卡；其中，第二叠加模块设置为对接收的第一叠加后视频以及接收的第二缩放视频进行叠加，得到第二叠加后视频，输出接口设置为输出第二叠加后视频。

Description

处理视频的装置和系统 技术领域
本申请涉及视频显示领域，具体而言，涉及一种。
背景技术
在插卡式视频处理设备(如视频切换器、视频拼接器)中，通常会插入多张视频输出卡。由于单张视频输出卡输出的视频数量有限，为了在显示设备上显示更多视频，目前，经常采用视频处理单元(Video Process Unit，VPU)对视频进行缩放、叠加等操作。然而，视频处理设备中的VPU数量一般是固定的，且视频处理设备中的VPU对视频源的缩放、叠加等操作进行了分组，视频处理设备不能输出VPU中的任意视频源，资源调度的限制较多。
针对相关技术中视频处理设备对视频源的分组方式固定，导致视频输出卡不能输出任意视频源，资源调度限制较多的技术问题，目前尚未提出有效的解决方案。
发明内容
本申请实施例提供了一种，以至少解决相关技术中视频处理设备对视频源的分组方式固定，导致视频输出卡不能输出任意视频源，资源调度限制较多的技术问题。
根据本申请实施例的一个方面，提供了一种处理视频的系统，包括：至少一个第一视频输出卡，每个第一视频输出卡包括第一处理器，第一处理器包括多个第一缩放模块以及至少一个第一叠加模块，其中，第一叠加模块与多个第一缩放模块均连接，多个第一缩放模块设置为对多路第一视频源进行缩放处理得到多个第一缩放视频，第一叠加模块设置为对接收的第一缩放视频进行叠加，得到第一叠加后视频；第二视频输出卡，包括第二处理器和至少一个输出接口，其中，第二处理器与输出接口相连，第二处理器包括多个第二缩放模块以及至少一个第二叠加模块，第二叠加模块与多个第二缩放模块均连接，多个第二缩放模块设置为对多路第二视频源进行缩放处理得到多个第二缩放视频；交换器，与每个第一视频输出卡和第二视频输出卡均连接，设置为将第一叠加后视频传输至第二视频输出卡；其中，第二叠加模块设置为对接收的第一叠加后视频以及接收的第二缩放视频进行叠加，得到第二叠加后视频，输出接口设置为输出第二叠加后视频。
可选地，在第二视频输出卡中：如果输出接口的数量为多个，第二叠加模块的数量为多个，且输出接口的数量和第二叠加模块的数量相等，其中，每个输出接口对应一个第二叠加模块，输出接口设置为输出经过对应的第二叠加模块叠加的第二叠加后视频。
可选地，在每个第一视频输出卡中，多路第一视频源包括多路第一播放视频源和多路第一预览视频源，多个第一缩放模块包括多个第一播放缩放模块和多个第一预览缩放模块，第一叠加模块包括第一播放叠加模块和第一预览叠加模块，其中，每个第一播放叠加模块和多个第一播放缩放模块均相连，每个第一预览叠加模块和多个第一预览缩放模块均相连，多个第一播放缩放模块设置为对多路第一播放视频源进行缩放处理得到多个第一播放缩放视频，第一播放叠加模块设置为对接收的第一播放缩放视频进行叠加，得到第一叠加后播放视频；多个第一预览缩放模块设置为对多路第一预览视频源进行缩放处理得到多个第一预览缩放视频，第一预览叠加模块设置为对接收的第一预览缩放视频进行叠加，得到第一叠加后预览视频；在第二视频输出卡中，多路第二视频源包括多路第二播放视频源和多路第二预览视频源，多个第二缩放模块包括多个第二播放缩放模块和多个第二预览缩放模块，第二叠加模块包括第二播放叠加模块和第二预览叠加模块，其中，每个第二播放叠加模块和多个第二播放缩放模块均相连，每个第二预览叠加模块和多个第二预览缩放模块均相连，多个第二播放缩放模块设置为对多路第二播放视频源进行缩放处理得到多个第二播放缩放视频，多个第二预览缩放模块设置为对多路第二预览视频源进行缩放处理得到多个第二预览缩放视频；交换器设置为将每个第一视频输出卡输出的第一叠加后播放视频和第一叠加后预览视频分别传输到下一个第一视频输出卡的第一播放叠加模块和第一预览叠加模块中，直至将最后一个第一视频输出卡输出的第一叠加后播放视频和第一叠加后预览视频分别传输到第二播放叠加模块和第二预览叠加模块中；其中，第二播放叠加模块设置为对接收的第二播放缩放视频和最后一个第一视频输出卡输出的第一叠加后播放视频进行叠加，得到第二叠加后播放视频；第二预览叠加模块设置为对接收的第二预览缩放视频和最后一个第一视频输出卡输出的第一叠加后预览视频进行叠加，得到第二叠加后预览视频，输出接口设置为输出第二叠加后播放视频或第二叠加后预览视频。
可选地，至少一个第一视频输出卡包括第一组第一视频输出卡和第二组第一视频输出卡：在第一组第一视频输出卡的每个第一视频输出卡中，多路第一视频源为多路第一播放视频源，多个第一缩放模块为多个第一播放缩放模块，第一叠加模块为第一播放叠加模块，其中，每个第一播放叠加模块和多个第一播放缩放模块均相连，多个第一播放缩放模块设置为对多路第一播放视频源进行缩放处理得到多个第一播放缩放 视频，第一播放叠加模块设置为对接收的第一播放缩放视频进行叠加，得到第一叠加后播放视频；在第二组第一视频输出卡的每个第一视频输出卡中，多路第一视频源为多路第一预览视频源，多个第一缩放模块为多个第一预览缩放模块，第一叠加模块为第一预览叠加模块，其中，每个第一预览叠加模块和多个第一预览缩放模块均相连，多个第一播放缩放模块设置为对多路第一预览视频源进行缩放处理得到多个第一预览缩放视频，第一预览叠加模块设置为对接收的第一预览缩放视频进行叠加，得到第一叠加后预览视频；在第二视频输出卡中，多路第二视频源包括多路第二播放视频源和多路第二预览视频源，多个第二缩放模块包括多个第二播放缩放模块和多个第二预览缩放模块，第二叠加模块包括第二播放叠加模块和第二预览叠加模块，其中，每个第二播放叠加模块和多个第二播放缩放模块均相连，每个二预览叠加模块和多个第二预览缩放模块均相连；多个第二播放缩放模块设置为对多路第二播放视频源进行缩放处理得到多个第二播放缩放视频，多个第二预览缩放模块设置为对多路第二预览视频源进行缩放处理得到多个第一预览缩放视频；交换器设置为将第一组第一视频输出卡的每个第一视频输出卡输出的第一叠加后播放视频传输到下一个第一视频输出卡的第一播放叠加模块中，直至将第一组第一视频输出卡的最后一个第一视频输出卡输出的第一叠加后播放视频传输到第二播放叠加模块中，以及将第二组第一视频输出卡的每个第一视频输出卡输出的第一叠加后预览视频传输到下一个第一视频输出卡的第一预览叠加模块中，直至将第二组第一视频输出卡的最后一个第一视频输出卡输出的第一叠加后预览视频传输到第二预览叠加模块中；其中，第二播放叠加模块设置为对接收的第二播放缩放视频和第一组第一视频输出卡的最后一个第一视频输出卡输出的第一叠加后播放视频进行叠加，得到第二叠加后播放视频，第二预览叠加模块设置为对接收的第二预览缩放视频和第二组第一视频输出卡的最后一个第一视频输出卡输出的第一叠加后预览视频进行叠加，得到第二叠加后预览视频，输出接口设置为输出第二叠加后播放视频或第二叠加后预览视频。
可选地，在第二视频输出卡中：如果输出接口的数量为多个，第二叠加模块的数量为多个，且输出接口的数量、第二播放叠加模块的数量和第二预览叠加模块的数量均相等，其中，每个输出接口对应一个第二播放叠加模块以及一个第二预览叠加模块，输出接口设置为输出经过对应的第二播放叠加模块叠加的第二叠加后播放视频或经过对应的第二预览叠加模块叠加的第二叠加后预览视频。
可选地，第一视频输出卡和第二视频输出卡使用相同的同步源。
可选地，同步源来自同步信号发生器，或同步源为第二视频输出卡的显示时序。
根据本申请实施例的另一个方面，还提供了一种处理视频的装置，包括：处理器，包括多个缩放模块以及至少一个叠加模块，叠加模块与多个缩放模块均连接，多个缩放模块设置为对多路视频源进行缩放处理得到多个缩放视频，叠加模块设置为对接收的缩放视频进行叠加，得到叠加后视频；至少一个输出接口，输出接口和处理器连接，设置为输出叠加后视频。
可选地，如果输出接口的数量为多个，叠加模块的数量为多个，且输出接口的数量和叠加模块的数量相等，其中，每个输出接口对应一个叠加模块，输出接口设置为输出经过对应的叠加模块叠加的叠加后视频。
可选地，多路视频源包括多路播放视频源和多路预览视频源，多个缩放模块包括多个播放缩放模块和多个预览缩放模块，叠加模块包括播放叠加模块和预览叠加模块，每个播放叠加模块和多个播放缩放模块均相连，每个预览叠加模块和多个预览缩放模块均相连，多个播放缩放模块设置为对多路播放视频源进行缩放处理得到多个播放缩放视频，播放叠加模块设置为对接收的播放缩放视频进行叠加，得到叠加后播放视频；多个预览缩放模块设置为对多路预览视频源进行缩放处理得到多个预览缩放视频，预览叠加模块设置为对接收的预览缩放视频进行叠加，得到叠加后预览视频；输出接口设置为输出叠加后播放视频或叠加后预览视频。
可选地，如果输出接口的数量为多个，播放叠加模块的数量为多个，预览叠加模块的数量为多个，且输出接口的数量、播放叠加模块的数量和预览叠加模块的数量相等，其中，每个输出接口对应一个播放叠加模块以及一个预览叠加模块，输出接口设置为输出经过对应的播放叠加模块叠加的叠加后播放视频或经过对应的预览叠加模块叠加的叠加后预览视频。
根据本申请实施例的另一方面，还提供了一种计算机可读存储介质，包括指令，当其在计算机上运行时，使得计算机执行如下指令：对多路视频源分别进行缩放处理，得到多个缩放视频；对接收的缩放视频进行叠加，得到叠加后视频；输出叠加后视频。
根据本申请实施例的另一方面，还提供了一种计算机可读存储介质，包括指令，当其在计算机上运行时，使得计算机执行如下指令：通过至少一个第一视频输出卡的每个第一视频输出卡的第一缩放模块对多路第一视频源进行缩放处理，得到多个第一缩放视频；对每个第一视频输出卡的第一叠加模块接收的第一缩放视频进行叠加，得到每个第一视频输出卡的第一叠加后视频；通过交换器将第一叠加后视频传输至第二视频输出卡，其中，第二视频输出卡的多个第二缩放模块对多路第二视频源进行缩放处理得到多个第二缩放视频，第二视频输出卡的叠加模块对接收的第一叠加后视频以 及接收的第二缩放视频进行叠加，得到第二叠加后视频；输出第二叠加后视频。
在本申请实施例中，第一叠加模块与多个第一缩放模块均连接，第二叠加模块与多个第二缩放模块均连接，通过第一叠加模块调度与其相连的多个第一缩放模块输出的任意第一缩放视频源，通过第二叠加模块调度与其相连的多个第二缩放模块输出的任意第二缩放视频源，利用交换器扩展了视频源的数量，解决了相关技术中视频处理设备对视频源的分组方式固定，导致视频输出卡不能输出任意视频源，资源调度限制较多的技术问题，达到了灵活调度视频源的目的，呈现了更加多样化的视频效果。
附图说明
此处所说明的附图用来提供对本申请的进一步理解，构成本申请的一部分，本申请的示意性实施例及其说明用于解释本申请，并不构成对本申请的不当限定。在附图中：
图1是根据本申请实施例1的一种可选的处理视频的装置示意图；
图2是根据本申请实施例1的另一种可选的处理视频的装置示意图；
图3是根据本申请实施例1的另一种可选的处理视频的装置示意图；
图4是根据本申请实施例2的一种可选的处理视频的系统示意图；
图5是根据本申请实施例2的另一种可选的处理视频的系统示意图；
图6是根据本申请实施例2的另一种可选的处理视频的系统示意图；
图7是根据本申请实施例2的另一种可选的处理视频的系统示意图；
图8是根据本申请实施例2的一种可选的外部同步源实现同步输出的系统示意图；以及
图9是根据本申请实施例2的一种可选的内部同步源实现同步输出的系统示意图。
具体实施方式
需要说明的是，在不冲突的情况下，本申请中的各实施例及实施例中的特征可以相互组合。为了使本技术领域的人员更好地理解本申请方案，下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分的实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都应当 属于本申请保护的范围。
另外，本申请的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换，以便这里描述的本申请的实施例能够以除了在这里图示或描述的那些以外的顺序实施。此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或装置不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或装置固有的其它步骤或单元。
可选地，在不矛盾的情况下，本申请中各个实施例中涉及的器件或名词介绍，在不矛盾的情况下可以相互参照。
实施例1
在描述本申请的各实施例的进一步细节之前，将参考图1来描述可用于实现本申请的原理的一个可选的处理视频的装置。在其最基本的配置中，图1是根据本申请实施例的处理视频的装置示意图。出于描述的目的，所绘的体系结构仅为合适环境的一个示例，并非对本申请的使用范围或功能提出任何局限。也不应将该装置解释为对图1所示的任一组件或其组合具有任何依赖或需求。
如图1所示，本申请提供的处理视频的装置包括：
处理器，包括多个缩放模块以及至少一个叠加模块，叠加模块与多个缩放模块均连接，多个缩放模块设置为对多路视频源进行缩放处理得到多个缩放视频，叠加模块设置为对接收的缩放视频进行叠加，得到叠加后视频。
一种可选方案中，上述处理视频的装置可以为视频拼接器，也可以为视频切换器还可以为视频处理器等用于进行视频处理的设备；处理器可以为现场可编程逻辑门阵列(Field Programmable Gate Array，FPGA)、数字信号处理(Digital Signal Process，DSP)器、ARM处理器(Advanced RISC Machines)等任何具有数字处理功能的芯片，在此不做限定。
具体地，处理器上设置有多个缩放模块以及至少一个叠加模块。缩放模块可以将多路视频流缩小或放大为统一的视频帧，以便后续处理。为了提高缩放质量，每个缩放模块可以只缩放一路视频源。
需要说明的是，每个叠加模块与所有的缩放模块均连接。由于叠加模块连接了所 有的缩放模块，因此，叠加模块可以叠加来自所有的缩放模块的缩放视频，也可以根据实际对视频源的需求，将来自所有的缩放模块的缩放视频进行任意叠加。总之，叠加的视频源为叠加模块接收到的视频源。
至少一个输出接口，输出接口和处理器连接，设置为输出叠加后视频。
一种可选方案中，上述输出接口可以为高清多媒体接口(High Definition Multimedia Interface，HDMI)、显示接口(DisplayPort，DP)等。
需要说明的是，该输出接口设置为输出叠加后视频可以理解为：输出接口输出的视频是基于叠加后视频得到的。例如，假设处理器为FPGA，视频源经过FPGA缩放并叠加之后，还需要经过编码芯片进行编码得到编码后视频，输出接口输出该编码后视频。
以视频拼接器为例，为了尽可能调度更多的视频源，视频拼接器的处理器上设置多个缩放模块和一个叠加模块。每个缩放模块缩放一路视频源，多个缩放模块对多路视频源进行一对一缩放，将多路视频源缩小或放大为格式统一的缩放视频。叠加模块与所有的缩放模块均连接，因此可以对缩放视频中的部分或全部进行叠加，具体叠加哪些缩放模块输出的缩放视频，由叠加模块接收到的缩放视频决定。叠加好的叠加后视频由输出接口输出，进而传送到显示设备上。
相较于现有技术，本申请的叠加模块可以根据用户需要叠加缩放视频，达到调度任意视频源的目的，实现了显示设备上的图层扩展。如果需要显示更多的图层，只需要根据实际需求接入更多的本申请实施例的处理视频的装置即可。容易注意到，由于缩放模块和叠加模块可以集成在独立的处理器中，进而避免了替换视频处理设备中资源更加丰富的主控芯片，同时实现了视频源的灵活配置。
在本申请实施例中，处理视频的装置包括：处理器，包括多个缩放模块以及至少一个叠加模块，叠加模块与多个缩放模块均连接，多个缩放模块设置为对多路视频源进行缩放处理得到多个缩放视频，叠加模块设置为对接收的缩放视频进行叠加，得到叠加后视频；至少一个输出接口，输出接口和处理器连接，设置为输出叠加后视频。与相关技术相比，本申请的叠加模块与多个缩放模块均相连，通过叠加模块调度任意视频源，解决了相关技术中视频处理设备对视频源的分组方式固定，导致视频输出卡不能输出任意视频源，资源调度限制较多的技术问题，达到了灵活调度视频源的目的，呈现了更加多样化的视频效果。
下面对该实施例的上述部件进行进一步地说明。
可选地，如果输出接口的数量为多个，叠加模块的数量为多个，且输出接口的数量和叠加模块的数量相等，其中，每个输出接口对应一个叠加模块，输出接口设置为输出经过对应的叠加模块叠加的叠加后视频。
图2示出了有两个输出接口的处理视频的装置结构示意图。在图2所示的连接关系中，每个输出接口对应一个叠加模块。假设有16个缩放模块，叠加模块A与输出接口A连接，叠加模块B与输出接口B连接，该16个缩放模块虽然与每个叠加模块均相连，但是每个叠加模块只对接收到的缩放视频进行叠加，因此，输出接口A可以输出经过叠加模块A叠加的叠加后视频A，输出接口B可以输出经过叠加模块B叠加的叠加后视频B。需要说明的是，如果叠加模块A接收到叠加某一路缩放视频的指令，那么该路缩放视频无法同时被叠加模块B叠加，每路缩放视频只能被一个叠加模块叠加，无法同时被两个叠加模块叠加。
可选地，在视频切换器中，多路视频源包括多路播放视频源和多路预览视频源，多个缩放模块包括多个播放缩放模块和多个预览缩放模块，叠加模块包括播放叠加模块和预览叠加模块，每个播放叠加模块和多个播放缩放模块均相连，每个预览叠加模块和多个预览缩放模块均相连。
一种可选方案中，上述播放视频源可以为用于播出的视频，上述预览视频源可以为用于预览的视频。由于视频切换器的主要功能是监控预览视频和播放视频，以将预览视频切换为当前播放视频，因此，视频源包括用于播放的播放视频源和用于预览的预览视频源。
在视频切换器中，多个播放缩放模块设置为对多路播放视频源进行缩放处理得到多个播放缩放视频，播放叠加模块设置为对接收的播放缩放视频进行叠加，得到叠加后播放视频。
一种可选方案中，上述叠加后播放视频(Program，PGM)可以为即将在显示设备上播出的视频。
在视频切换器中，多个预览缩放模块设置为对多路预览视频源进行缩放处理得到多个预览缩放视频，预览叠加模块设置为对接收的预览缩放视频进行叠加，得到叠加后预览视频。
一种可选方案中，上述叠加后预览视频(Preview，PVW)可以为即将在监控设备上预览的视频。
需要说明的是，播放叠加模块可以对接收到的播放缩放视频进行叠加，预览叠加 模块可以对接收到的预览缩放视频进行叠加，以同时实现预览和播放的效果。然而，如果缩放模块输出的缩放视频用于预览，那么就不能同时用于播放，如果缩放模块输出的缩放视频用于播放，那么就不能同时用于预览。
可选地，由于视频拼接器可以没有预览功能，因此可以只需要一个叠加模块，就可以调度任意的缩放视频进行播放。视频切换器增加了预览内容，所以至少需要两个叠加模块。在分配好播放视频源和预览视频源后，播放叠加模块可以自由调度播放视频源中的部分或全部，预览叠加模块可以自由调度预览视频源中的部分或全部。
在视频切换器中，输出接口设置为输出叠加后播放视频或叠加后预览视频。
PVW主要是配合PGM使用，因为在演播室中，实际播出的PGM需要在监控设备上提前预览，符合播放要求的才切换为PGM，经过输出接口输出。因此，输出接口只能输出一路视频。
一种可选方案中，可以通过mix切换模块将叠加后预览视频和叠加后播放视频进行预览或播放的切换，也就是说，通过mix切换模块可以选择叠加后预览视频进行播放或是选择叠加后播放视频进行播放，该mix切换模块可以设置在上述处理器中。
例如，显示设备上显示的是叠加后播放视频，监控设备上显示的是叠加后预览视频，如果叠加后预览视频符合播出条件，立即将其切换为播放视频，在显示设备上显示。此时，叠加后预览视频就转换为播放视频，之前的叠加后播放视频就转换为预览视频。
需要说明的是，叠加后预览视频也可以通过控制台进行显示。只是控制台上显示的预览视频为编辑状态。为了看到更加直观的视频效果，叠加后预览视频可以通过预监卡进行监控。当然，该预监卡可以监控所有视频源、PGM和PVW。
可选地，上述装置还可以包括：预监卡，分别与多路视频源的输出端以及叠加模块的输出端连接，设置为监视如下至少之一的视频数据：视频源、叠加后播放视频和叠加后预览视频。
由于输出接口只能输出一路视频数据，因此，本实施例的方案可以通过预监卡监控更多的视频数据。具体地，预监卡可以与多路视频源的输出端以及叠加模块的输出端连接，因此预监卡上可以显示原始的多路视频源、经叠加模块叠加好的叠加后播放视频以及叠加后预览视频，方便工作人员查看各个视频数据，掌控各种视频画面。
可选地，如果输出接口的数量为多个，播放叠加模块的数量为多个，预览叠加模块的数量为多个，且输出接口的数量、播放叠加模块的数量和预览叠加模块的数量相 等，其中，每个输出接口对应一个播放叠加模块以及一个预览叠加模块，输出接口设置为输出经过对应的播放叠加模块叠加的叠加后播放视频或经过对应的预览叠加模块叠加的叠加后预览视频。
上述方案中，每个输出接口对应一个播放叠加模块以及一个预览叠加模块。例如，播放叠加模块A、预览叠加模块A与输出接口A连接，播放叠加模块B、预览叠加模块B与输出接口B连接，那么输出接口A可以输出播放叠加模块A叠加的叠加后播放视频A或预览叠加模块叠加的叠加后预览视频A，输出接口B可以输出播放叠加模块B叠加的叠加后播放视频B或预览叠加模块叠加的叠加后预览视频B。至于具体的视频源分布由工作人员进行调度，避免了视频源的分组限制。如此可以同时切换多组叠加后预览视频和叠加后播放视频，以适应多台显示设备同时工作的复杂场景。
图3示出了一种可选的处理视频的装置示意图。如图2所示，视频输出卡内有8个缩放模块，每个缩放模块缩放一路视频源，叠加模块和每一个缩放模块均连接。为避免线条过多导致凌乱，图中仅示出了当前叠加方式下缩放视频与叠加模块的输入输出关系。其中，视频源1-4用于播放，缩放模块1-4为播放缩放模块，叠加模块1为播放叠加模块，视频源5-8用于预览，缩放模块5-8为预览缩放模块，叠加模块2为预览叠加模块。当叠加模块接收到哪个缩放视频时，就会将该缩放视频进行叠加，否则不叠加。这种方式下，每个叠加模块都可以自由叠加与其相连的所有缩放模块的缩放视频，实现输出的图层任意调度的目的。图3中，叠加模块1可以自由调度缩放后的视频源1-4，叠加模块2可以自由调度缩放后的视频源5-8。输出接口输出叠加后的缩放视频1-4或叠加后的缩放视频5-8。另外，单个输出卡也可以支持两个输出接口，在只使能一个输出接口的条件下，所有的视频源都可以调度到使能的输出接口上，在使能多个输出接口的条件下，缩放视频分布的具体接口可以根据实际需要，由工作人员进行调度，完全不受视频源的分组限制。
实施例2
在实施例1提供的处理视频的装置下，本实施例提供了一种处理视频的系统。图4是根据本申请实施例的处理视频的系统示意图，如图4所示，该系统包括：
至少一个第一视频输出卡，每个第一视频输出卡包括第一处理器，第一处理器包括多个第一缩放模块以及至少一个第一叠加模块，其中，第一叠加模块与多个第一缩放模块均连接，多个第一缩放模块设置为对多路第一视频源进行缩放处理得到多个第一缩放视频，第一叠加模块设置为对接收的第一缩放视频进行叠加，得到第一叠加后视频。
一种可选方案中，上述处理视频的系统可以为视频拼接器，也可以为视频切换器；上述第一视频输出卡可以独立于视频处理设备，该视频输出卡可以集成缩放视频、叠加视频、解码、滤波、实时传输等功能，支持各种质量等级的视频流；上述第一处理器可以为FPGA、DSP、ARM等任何具有数字处理功能的芯片，在此不做限定。
具体地，第一处理器上设置有多个第一缩放模块以及至少一个第一叠加模块。第一缩放模块可以将多路视频流缩小或放大为统一的视频帧，以便后续处理。为了提高缩放质量，每个第一缩放模块可以只缩放一路视频源。
需要说明的是，每个第一叠加模块与所有的第一缩放模块均连接。由于第一叠加模块连接了所有的第一缩放模块，因此，第一叠加模块可以叠加来自所有的第一缩放模块的第一缩放视频，也可以根据实际对第一视频源的需求，将来自所有的第一缩放模块的第一缩放视频进行任意叠加。总之，叠加的视频源为第一叠加模块接收到的第一视频源。
第二视频输出卡，包括第二处理器和至少一个输出接口，其中，第二处理器与输出接口相连，第二处理器包括多个第二缩放模块以及至少一个第二叠加模块，第二叠加模块与多个第二缩放模块均连接，多个第二缩放模块设置为对多路第二视频源进行缩放处理得到多个第二缩放视频。
应理解，本申请中的第一视频源和第二视频源可以为相同的视频源，也可以为不同的视频源。
一种可选方案中，上述第二视频输出卡的详细描述可以参见上文中第一视频输出卡的描述，为了简洁在此不再赘述。
上述输出接口可以为高清多媒体接口(High Definition Multimedia Interface，HDMI)、显示接口(DisplayPort，DP)等。
具体地，第二处理器上设置有多个第二缩放模块以及至少一个第二叠加模块。第二缩放模块可以将多路视频流缩小或放大为统一的视频帧，以便后续处理。为了提高缩放质量，每个第二缩放模块可以只缩放一路视频源。
需要说明的是，第一视频输出卡和第二视频输出卡的结构也可以相同。也就是说，第一视频输出卡也可以包括输出接口，只是不使用。如此，可以更加适应资源的灵活配置。
交换器，与每个第一视频输出卡和第二视频输出卡均连接，设置为将第一叠加后视频传输至第二视频输出卡；其中，第二叠加模块设置为对接收的第一叠加后视频以 及接收的第二缩放视频进行叠加，得到第二叠加后视频，输出接口设置为输出第二叠加后视频。
一种可选方案中，上述交换器可以采用交叉点(CrossPoint)芯片。CrossPoint芯片支持视频数据的交换备份，局部信号的损坏不会影响其它部分的正常运行。
上述方案中，交换器可以在第一视频输出卡和第二视频输出卡之间传输视频数据，以扩大视频源的数量。
需要说明的是，每个第二叠加模块与所有的第二缩放模块均连接。图4中的第二缩放模块1实际上也与第二叠加模块相连，但是由于第一叠加后视频占用了第二叠加模块的一个输入通道，因此，第二叠加模块就会少接收一路第二缩放视频。因此，第二叠加模块可以叠加来自所有的第二缩放模块的第二缩放视频，也可以根据实际对第二视频源的需求，将来自所有的第二缩放模块的第二缩放视频进行任意叠加。总之，叠加的视频源为第二叠加模块接收到的视频源。其中，接收到的视频源包括第二缩放视频和第一叠加后视频。
在一个可选的实施例中，多个第一视频输出卡、一个第二视频输出卡通过交换器级联。第一个第一视频输出卡叠加好的第一叠加后视频不进行显示处理，而是通过交换器将其映射到第二个第一视频输出卡的第一叠加模块的输入通道上，作为一个第一视频输入源，和第二个第一视频输出卡缩放好的多个第一缩放视频进行叠加，达到扩展图层的目的。最终，交换器将最后一个第一视频输出卡输出的第一叠加后视频传输到第二视频输出卡的第二叠加模块中，和第二缩放视频进行叠加，得到最终的第二叠加后视频，然后通过输出接口输出第二叠加后视频。
例如在图5所绘的体系结构中，包括两个第一视频输出卡和一个第二视频输出卡。每个输出卡上各有8个缩放模块和1个叠加模块。交换器将第一视频输出卡1输出的包括8个图层的第一叠加后视频1传输至第一视频输出卡2的叠加模块中。由于第一叠加后视频1占用了第一视频输出卡2叠加模块的一个通道，第一视频输出卡2的叠加模块除过第一叠加后视频1外，还可以叠加7路缩放视频，因此第一叠加后视频2包括13个图层。交换器将第一叠加后视频2传输至第二视频输出卡的叠加模块中。由于第一叠加后视频2占用了第二视频输出卡叠加模块的一个通道，第二视频输出卡的叠加模块除过第一叠加后视频2外，还可以叠加7路缩放视频，因此第二叠加后视频总共包括19个图层。最终第二叠加后视频由输出接口输出。显然，交换器的加入大大扩大了可以显示的图层数量。
与相关技术相比，本申请的第一叠加模块与多个第一缩放模块均连接，第二叠加 模块与多个第二缩放模块均连接，通过第一叠加模块调度与其相连的多个第一缩放模块输出的任意第一缩放视频源，通过第二叠加模块调度与其相连的多个第二缩放模块输出的任意第二缩放视频源，利用交换器扩展了视频源的数量，解决了相关技术中视频处理设备对视频源的分组方式固定，导致视频输出卡不能输出任意视频源，资源调度限制较多的技术问题，达到了灵活调度视频源的目的，呈现了更加多样化的视频效果。
下面对该实施例的上述步骤进行进一步地说明。
可选地，在第二视频输出卡中：如果输出接口的数量为多个，第二叠加模块的数量为多个，且输出接口的数量和第二叠加模块的数量相等，其中，每个输出接口对应一个第二叠加模块，输出接口设置为输出经过对应的第二叠加模块叠加的第二叠加后视频。
具体地，第二视频输出卡中有输出接口，每个输出接口对应一个第二叠加模块。例如，第二叠加模块A与输出接口A连接，第二叠加模块B与输出接口B连接，输出接口A可以对第二叠加模块A输出的第二叠加后视频A进行预览或播放，输出接口B可以对第二叠加模块B输出的第二叠加后视频B进行预览或播放，如此可以同时监控多组预览视频和/或播放视频，以适应多台显示设备同时工作的场景。
在一个可选的实施例中，在每个第一视频输出卡中，多路第一视频源包括多路第一播放视频源和多路第一预览视频源，多个第一缩放模块包括多个第一播放缩放模块和多个第一预览缩放模块，第一叠加模块包括第一播放叠加模块和第一预览叠加模块，其中，每个第一播放叠加模块和多个第一播放缩放模块均相连，每个第一预览叠加模块和多个第一预览缩放模块均相连，多个第一播放缩放模块设置为对多路第一播放视频源进行缩放处理得到多个第一播放缩放视频，第一播放叠加模块设置为对接收的第一播放缩放视频进行叠加，得到第一叠加后播放视频；多个第一预览缩放模块设置为对多路第一预览视频源进行缩放处理得到多个第一预览缩放视频，第一预览叠加模块设置为对接收的第一预览缩放视频进行叠加，得到第一叠加后预览视频。
在上述实施例的第二视频输出卡中，多路第二视频源包括多路第二播放视频源和多路第二预览视频源，多个第二缩放模块包括多个第二播放缩放模块和多个第二预览缩放模块，第二叠加模块包括第二播放叠加模块和第二预览叠加模块，其中，每个第二播放叠加模块和多个第二播放缩放模块均相连，每个第二预览叠加模块和多个第二预览缩放模块均相连，多个第二播放缩放模块设置为对多路第二播放视频源进行缩放处理得到多个第二播放缩放视频，多个第二预览缩放模块设置为对多路第二预览视频 源进行缩放处理得到多个第二预览缩放视频。
在上述实施例的交换器设置为将每个第一视频输出卡输出的第一叠加后播放视频和第一叠加后预览视频分别传输到下一个第一视频输出卡的第一播放叠加模块和第一预览叠加模块中，直至将最后一个第一视频输出卡输出的第一叠加后播放视频和第一叠加后预览视频分别传输到第二播放叠加模块和第二预览叠加模块中；其中，第二播放叠加模块设置为对接收的第二播放缩放视频和最后一个第一视频输出卡输出的第一叠加后播放视频进行叠加，得到第二叠加后播放视频；第二预览叠加模块设置为对接收的第二预览缩放视频和最后一个第一视频输出卡输出的第一叠加后预览视频进行叠加，得到第二叠加后预览视频，输出接口设置为输出第二叠加后播放视频或第二叠加后预览视频。
图6示出了一种按照上述实施例配置的处理视频的系统示意图。如图6所示，该系统有一个第一视频输出卡和一个第二视频输出卡。第一视频输出卡叠加好的PGM1和PVW1通过交换器映射到第二视频输出卡时，PGM1和PVW1会各占用第二视频输出卡的叠加模块的一个输入通道，这样第二视频输出卡的叠加模块还能在PGM1和PVW1的基础上再各多叠加三个图层，输出接口显示的PGM2或PVW2上最多有7个图层，达到了图层扩展的目的。
在另一个可选的实施例中，至少一个第一视频输出卡包括第一组第一视频输出卡和第二组第一视频输出卡：
在第一组第一视频输出卡的每个第一视频输出卡中，多路第一视频源为多路第一播放视频源，多个第一缩放模块为多个第一播放缩放模块，第一叠加模块为第一播放叠加模块，其中，每个第一播放叠加模块和多个第一播放缩放模块均相连，多个第一播放缩放模块设置为对多路第一播放视频源进行缩放处理得到多个第一播放缩放视频，第一播放叠加模块设置为对接收的第一播放缩放视频进行叠加，得到第一叠加后播放视频；在第二组第一视频输出卡的每个第一视频输出卡中，多路第一视频源为多路第一预览视频源，多个第一缩放模块为多个第一预览缩放模块，第一叠加模块为第一预览叠加模块，其中，每个第一预览叠加模块和多个第一预览缩放模块均相连，多个第一播放缩放模块设置为对多路第一预览视频源进行缩放处理得到多个第一预览缩放视频，第一预览叠加模块设置为对接收的第一预览缩放视频进行叠加，得到第一叠加后预览视频；
在第二视频输出卡中，多路第二视频源包括多路第二播放视频源和多路第二预览视频源，多个第二缩放模块包括多个第二播放缩放模块和多个第二预览缩放模块，第 二叠加模块包括第二播放叠加模块和第二预览叠加模块，其中，每个第二播放叠加模块和多个第二播放缩放模块均相连，每个二预览叠加模块和多个第二预览缩放模块均相连；多个第二播放缩放模块设置为对多路第二播放视频源进行缩放处理得到多个第二播放缩放视频，多个第二预览缩放模块设置为对多路第二预览视频源进行缩放处理得到多个第一预览缩放视频；
交换器设置为将第一组第一视频输出卡的每个第一视频输出卡输出的第一叠加后播放视频传输到下一个第一视频输出卡的第一播放叠加模块中，直至将第一组第一视频输出卡的最后一个第一视频输出卡输出的第一叠加后播放视频传输到第二播放叠加模块中，以及将第二组第一视频输出卡的每个第一视频输出卡输出的第一叠加后预览视频传输到下一个第一视频输出卡的第一预览叠加模块中，直至将第二组第一视频输出卡的最后一个第一视频输出卡输出的第一叠加后预览视频传输到第二预览叠加模块中；其中，第二播放叠加模块设置为对接收的第二播放缩放视频和第一组第一视频输出卡的最后一个第一视频输出卡输出的第一叠加后播放视频进行叠加，得到第二叠加后播放视频，第二预览叠加模块设置为对接收的第二预览缩放视频和第二组第一视频输出卡的最后一个第一视频输出卡输出的第一叠加后预览视频进行叠加，得到第二叠加后预览视频，输出接口设置为输出第二叠加后播放视频或第二叠加后预览视频。
图7示出了一种按照上述实施例配置的处理视频的系统示意图。如图7所示，该系统包括第一视频输出卡和第二视频输出卡，其中，第一视频输出卡有两个，第一视频输出卡1的叠加模块支持将8个图层全部叠加，输出叠加好的PGM1图像。第一视频输出卡2的叠加模块支持将8个图层全部叠加，输出叠加好的PVW1图像。PGM1和PVW1经过交换器可以传输至第二视频输出卡，第二视频输出卡在叠加好的PGM1或PVW1基础上上还能再叠加3个图层，最终呈现的PGM2或PVW2支持11个图层。
需要说明的是，第一视频输出卡的数量不同，级联的方案可以按照以上两种方式进行组合，以最大化的显示图层数量。
可选地，在第二视频输出卡中：如果输出接口的数量为多个，第二叠加模块的数量为多个，且输出接口的数量、第二播放叠加模块的数量和第二预览叠加模块的数量均相等，其中，每个输出接口对应一个第二播放叠加模块以及一个第二预览叠加模块，输出接口设置为输出经过对应的第二播放叠加模块叠加的第二叠加后播放视频或经过对应的第二预览叠加模块叠加的第二叠加后预览视频。
上述方案中，每个输出接口对应一个第二播放叠加模块以及一个第二预览叠加模块。例如，第二播放叠加模块A、第二预览叠加模块A与输出接口A连接，第二播放 叠加模块B、第二预览叠加模块B与输出接口B连接，那么输出接口A可以输出第二播放叠加模块A叠加的第二叠加后播放视频A或第二预览叠加模块叠加的第二叠加后预览视频A，输出接口B可以输出第二播放叠加模块B叠加的第二叠加后播放视频B或第二预览叠加模块叠加的第二叠加后预览视频B。至于具体的视频源分布由工作人员进行调度，避免了视频源的分组限制。如此可以同时切换多组叠加后预览视频和叠加后播放视频，以适应多台显示设备同时工作的复杂场景。
可选地，上述系统还可以包括：预监卡，分别与多路第一视频源的输出端、多路第二视频源的输出端以及第一叠加模块的输出端、第二叠加模块的输出端连接，设置为监视如下至少之一的视频数据：第一视频源、第二视频源、第一叠加后播放视频、第一叠加后预览视频、第二叠加后播放视频、第二叠加后预览视频。
由于输出接口只能输出一路视频数据，因此，本实施例的方案可以通过预监卡监控更多的视频数据。具体地，预监卡可以与多路第一视频源的输出端、多路第二视频源的输出端以及第一叠加模块的输出端、第二叠加模块的输出端连接，因此预监卡上可以显示原始的第一视频源、第二视频源，以及第一叠加后播放视频、第一叠加后预览视频、第二叠加后播放视频、第二叠加后预览视频，方便工作人员查看各个视频数据，掌控各种视频画面。
可选地，第一视频输出卡和第二视频输出卡使用相同的同步源。
一种可选方案中，上述同步源可以采用同步锁定(Genlock)的方式实现。
在多个视频输出卡实现图层叠加的情况下，有叠加关系的视频输出卡传输的视频帧的时序必须是同步的，否则无法进行叠加。而采用相同的同步源，可以确保每个视频输出卡传递的视频帧都是同步的。
可选地，同步源来自同步信号发生器，或同步源为第二视频输出卡的显示时序。
图8示出了一种可选的外部同步源实现同步输出的系统示意图。如图8所示，同步源来自外部设备，例如Genlock源发生器。Genlock源发生器将同步信号同步发送给各个视频输出卡，以保障各个视频输出卡的时序同步，为用户提供优质的无时间差的画面效果。
图9示出了一种可选的内部同步源实现同步输出的系统示意图。如图9所示，同步源来自第二视频输出卡的显示时序。第二视频输出卡的显示时序提供给了之前的所有视频输出卡(第一视频输出卡)，之前的所有视频输出卡根据显示时序将叠加好的缩放视频送出，以保障各个视频输出卡传递的视频帧是同步的。
实施例3
根据本申请实施例，提供了一种计算机可读存储介质，包括指令，当其在计算机上运行时，使得计算机执行如下指令：移动终端采集预设点亮方式下拼接屏的至少一张图像，其中，预设点亮方式为点亮拼接屏上的目标显示单元；移动终端基于图像中目标显示单元的位置信息确定拼接屏上的拼接亮暗线的校正系数；移动终端将校正系数发送至显示控制器，以便于显示控制器根据校正系数校正拼接亮暗线。
实施例4
根据本申请实施例，还提供了一种计算机可读存储介质，包括指令，当其在计算机上运行时，使得计算机执行如下指令：通过至少一个第一视频输出卡的每个第一视频输出卡的第一缩放模块对多路第一视频源进行缩放处理，得到多个第一缩放视频；对每个第一视频输出卡的第一叠加模块接收的第一缩放视频进行叠加，得到每个第一视频输出卡的第一叠加后视频；通过交换器将第一叠加后视频传输至第二视频输出卡，其中，第二视频输出卡的多个第二缩放模块对多路第二视频源进行缩放处理得到多个第二缩放视频，第二视频输出卡的叠加模块对接收的第一叠加后视频以及接收的第二缩放视频进行叠加，得到第二叠加后视频；输出第二叠加后视频。
上述本申请实施例序号仅仅为了描述，不代表实施例的优劣。
在本申请的上述实施例中，对各个实施例的描述都各有侧重，某个实施例中没有详述的部分，可以参见其他实施例的相关描述。
在本申请所提供的几个实施例中，应该理解到，所揭露的技术内容，可通过其它的方式实现。其中，以上所描述的装置实施例仅仅是示意性的，例如所述单元的划分，可以为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，单元或模块的间接耦合或通信连接，可以是电性或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成 的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机装置(可为个人计算机、服务器或者网络装置等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、移动硬盘、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述仅是本申请的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本申请原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本申请的保护范围。
工业实用性
本申请实施例提供的方案可应用于视频显示领域，尤其适用于视频拼接和视频切换的场景。在本申请实施例中，第一叠加模块与多个第一缩放模块均连接，第二叠加模块与多个第二缩放模块均连接，通过第一叠加模块调度与其相连的多个第一缩放模块输出的任意第一缩放视频源，通过第二叠加模块调度与其相连的多个第二缩放模块输出的任意第二缩放视频源，利用交换器成倍扩展了视频源的数量，解决了相关技术中视频处理设备对视频源的分组方式固定，导致视频输出卡不能输出任意视频源，资源调度限制较多的技术问题，达到了灵活调度视频源的目的。

Claims (11)

  1. 一种处理视频的系统，包括：
    至少一个第一视频输出卡，每个所述第一视频输出卡包括第一处理器，所述第一处理器包括多个第一缩放模块以及至少一个第一叠加模块，其中，所述第一叠加模块与所述多个第一缩放模块均连接，所述多个第一缩放模块设置为对多路第一视频源进行缩放处理得到多个第一缩放视频，所述第一叠加模块设置为对接收的第一缩放视频进行叠加，得到第一叠加后视频；
    第二视频输出卡，包括第二处理器和至少一个输出接口，其中，所述第二处理器与所述输出接口相连，所述第二处理器包括多个第二缩放模块以及至少一个第二叠加模块，所述第二叠加模块与所述多个第二缩放模块均连接，所述多个第二缩放模块设置为对多路第二视频源进行缩放处理得到多个第二缩放视频；
    交换器，与每个所述第一视频输出卡和所述第二视频输出卡均连接，设置为将所述第一叠加后视频传输至所述第二视频输出卡；
    其中，所述第二叠加模块设置为对接收的第一叠加后视频以及接收的第二缩放视频进行叠加，得到第二叠加后视频，所述输出接口设置为输出所述第二叠加后视频。
  2. 根据权利要求1所述的系统，其中，在所述第二视频输出卡中：
    如果所述输出接口的数量为多个，所述第二叠加模块的数量为多个，且所述输出接口的数量和所述第二叠加模块的数量相等，其中，每个所述输出接口对应一个所述第二叠加模块，所述输出接口设置为输出经过对应的第二叠加模块叠加的第二叠加后视频。
  3. 根据权利要求1所述的系统，其中：
    在每个所述第一视频输出卡中，所述多路第一视频源包括多路第一播放视频源和多路第一预览视频源，所述多个第一缩放模块包括多个第一播放缩放模块和多个第一预览缩放模块，所述第一叠加模块包括第一播放叠加模块和第一预览叠加模块，其中，每个所述第一播放叠加模块和所述多个第一播放缩放模块均相连，每个所述第一预览叠加模块和所述多个第一预览缩放模块均相连，所述多个第一 播放缩放模块设置为对所述多路第一播放视频源进行缩放处理得到多个第一播放缩放视频，所述第一播放叠加模块设置为对接收的第一播放缩放视频进行叠加，得到第一叠加后播放视频；所述多个第一预览缩放模块设置为对所述多路第一预览视频源进行缩放处理得到多个第一预览缩放视频，所述第一预览叠加模块设置为对接收的第一预览缩放视频进行叠加，得到第一叠加后预览视频；
    在所述第二视频输出卡中，所述多路第二视频源包括多路第二播放视频源和多路第二预览视频源，所述多个第二缩放模块包括多个第二播放缩放模块和多个第二预览缩放模块，所述第二叠加模块包括第二播放叠加模块和第二预览叠加模块，其中，每个所述第二播放叠加模块和所述多个第二播放缩放模块均相连，每个所述第二预览叠加模块和所述多个第二预览缩放模块均相连，所述多个第二播放缩放模块设置为对所述多路第二播放视频源进行缩放处理得到多个第二播放缩放视频，所述多个第二预览缩放模块设置为对所述多路第二预览视频源进行缩放处理得到多个第二预览缩放视频；
    所述交换器设置为将每个所述第一视频输出卡输出的第一叠加后播放视频和第一叠加后预览视频分别传输到下一个第一视频输出卡的第一播放叠加模块和第一预览叠加模块中，直至将最后一个第一视频输出卡输出的第一叠加后播放视频和第一叠加后预览视频分别传输到所述第二播放叠加模块和第二预览叠加模块中；
    其中，所述第二播放叠加模块设置为对接收的第二播放缩放视频和所述最后一个第一视频输出卡输出的第一叠加后播放视频进行叠加，得到第二叠加后播放视频；所述第二预览叠加模块设置为对接收的第二预览缩放视频和所述最后一个第一视频输出卡输出的第一叠加后预览视频进行叠加，得到第二叠加后预览视频，所述输出接口设置为输出所述第二叠加后播放视频或所述第二叠加后预览视频。
  4. 根据权利要求1所述的系统，其中：所述至少一个第一视频输出卡包括第一组第一视频输出卡和第二组第一视频输出卡：
    在所述第一组第一视频输出卡的每个第一视频输出卡中，所述多路第一视频源为多路第一播放视频源，所述多个第一缩放模块为多个第一播放缩放模块，所述第一叠加模块为第一播放叠加模块，其中，每个所述第一播放叠加模块和所述 多个第一播放缩放模块均相连，所述多个第一播放缩放模块设置为对所述多路第一播放视频源进行缩放处理得到多个第一播放缩放视频，所述第一播放叠加模块设置为对接收的第一播放缩放视频进行叠加，得到第一叠加后播放视频；
    在所述第二组第一视频输出卡的每个第一视频输出卡中，所述多路第一视频源为多路第一预览视频源，所述多个第一缩放模块为多个第一预览缩放模块，所述第一叠加模块为第一预览叠加模块，其中，每个所述第一预览叠加模块和所述多个第一预览缩放模块均相连，所述多个第一播放缩放模块设置为对所述多路第一预览视频源进行缩放处理得到多个第一预览缩放视频，所述第一预览叠加模块设置为对接收的第一预览缩放视频进行叠加，得到第一叠加后预览视频；
    在所述第二视频输出卡中，所述多路第二视频源包括多路第二播放视频源和多路第二预览视频源，所述多个第二缩放模块包括多个第二播放缩放模块和多个第二预览缩放模块，所述第二叠加模块包括第二播放叠加模块和第二预览叠加模块，其中，每个所述第二播放叠加模块和所述多个第二播放缩放模块均相连，每个所述二预览叠加模块和所述多个第二预览缩放模块均相连；所述多个第二播放缩放模块设置为对所述多路第二播放视频源进行缩放处理得到多个第二播放缩放视频，所述多个第二预览缩放模块设置为对所述多路第二预览视频源进行缩放处理得到多个第一预览缩放视频；
    所述交换器设置为将所述第一组第一视频输出卡的每个第一视频输出卡输出的第一叠加后播放视频传输到下一个第一视频输出卡的第一播放叠加模块中，直至将所述第一组第一视频输出卡的最后一个第一视频输出卡输出的第一叠加后播放视频传输到所述第二播放叠加模块中，以及将所述第二组第一视频输出卡的每个第一视频输出卡输出的第一叠加后预览视频传输到下一个第一视频输出卡的第一预览叠加模块中，直至将所述第二组第一视频输出卡的最后一个第一视频输出卡输出的第一叠加后预览视频传输到所述第二预览叠加模块中；
    其中，所述第二播放叠加模块设置为对接收的第二播放缩放视频和所述第一组第一视频输出卡的最后一个第一视频输出卡输出的第一叠加后播放视频进行叠加，得到第二叠加后播放视频，所述第二预览叠加模块设置为对接收的第二预览 缩放视频和所述第二组第一视频输出卡的最后一个第一视频输出卡输出的第一叠加后预览视频进行叠加，得到第二叠加后预览视频，所述输出接口设置为输出所述第二叠加后播放视频或所述第二叠加后预览视频。
  5. 根据权利要求3或4所述的系统，其中，在所述第二视频输出卡中：
    如果所述输出接口的数量为多个，所述第二叠加模块的数量为多个，且所述输出接口的数量、所述第二播放叠加模块的数量和所述第二预览叠加模块的数量均相等，其中，每个输出接口对应一个所述第二播放叠加模块以及一个所述第二预览叠加模块，所述输出接口设置为输出经过对应的第二播放叠加模块叠加的第二叠加后播放视频或经过对应的第二预览叠加模块叠加的第二叠加后预览视频。
  6. 根据权利要求1所述的系统，其中，所述第一视频输出卡和所述第二视频输出卡使用相同的同步源。
  7. 根据权利要求6所述的系统，其中，所述同步源来自同步信号发生器，或所述同步源为所述第二视频输出卡的显示时序。
  8. 一种处理视频的装置，包括：
    处理器，包括多个缩放模块以及至少一个叠加模块，所述叠加模块与所述多个缩放模块均连接，所述多个缩放模块设置为对多路视频源进行缩放处理得到多个缩放视频，所述叠加模块设置为对接收的缩放视频进行叠加，得到叠加后视频；
    至少一个输出接口，所述输出接口和所述处理器连接，设置为输出所述叠加后视频。
  9. 根据权利要求8所述的装置，其中，
    如果所述输出接口的数量为多个，所述叠加模块的数量为多个，且所述输出接口的数量和所述叠加模块的数量相等，其中，每个所述输出接口对应一个所述叠加模块，所述输出接口设置为输出经过对应的叠加模块叠加的叠加后视频。
  10. 根据权利要求8所述的装置，其中，所述多路视频源包括多路播放视频源和多路预览视频源，所述多个缩放模块包括多个播放缩放模块和多个预览缩放模块，所述叠加模块包括播放叠加模块和预览叠加模块，每个所述播放叠加模块和所述多 个播放缩放模块均相连，每个所述预览叠加模块和所述多个预览缩放模块均相连，
    所述多个播放缩放模块设置为对所述多路播放视频源进行缩放处理得到多个播放缩放视频，所述播放叠加模块设置为对接收的播放缩放视频进行叠加，得到叠加后播放视频；
    所述多个预览缩放模块设置为对所述多路预览视频源进行缩放处理得到多个预览缩放视频，所述预览叠加模块设置为对接收的预览缩放视频进行叠加，得到叠加后预览视频；
    所述输出接口设置为输出所述叠加后播放视频或所述叠加后预览视频。
  11. 根据权利要求10所述的装置，其中，如果所述输出接口的数量为多个，所述播放叠加模块的数量为多个，所述预览叠加模块的数量为多个，且所述输出接口的数量、所述播放叠加模块的数量和所述预览叠加模块的数量相等，
    其中，每个输出接口对应一个所述播放叠加模块以及一个所述预览叠加模块，所述输出接口设置为输出经过对应的播放叠加模块叠加的叠加后播放视频或经过对应的预览叠加模块叠加的叠加后预览视频。
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