CN108540734B - Switching method, device and system of 4K video and audio signals and electronic equipment - Google Patents
Switching method, device and system of 4K video and audio signals and electronic equipment Download PDFInfo
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- CN108540734B CN108540734B CN201810466568.0A CN201810466568A CN108540734B CN 108540734 B CN108540734 B CN 108540734B CN 201810466568 A CN201810466568 A CN 201810466568A CN 108540734 B CN108540734 B CN 108540734B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
- H04N5/268—Signal distribution or switching
Abstract
The embodiment of the application provides a method, a device and a system for switching 4K video and audio signals and electronic equipment, wherein the method comprises the following steps: when a switching command is sent to the high-definition video and audio signal through a high-definition switching station, the switching command is received; the high-definition video and audio signal and the 4K video and audio signal to be switched are signals with different resolutions which are recorded and synchronously output by the same camera; recording the switching command, wherein the switching command comprises a current time code; and taking the switching command as the switching command of the 4K video-audio signal at the time corresponding to the current time code. By adopting the scheme provided by the embodiment of the application, the 4K video and audio signal switching can be realized on the premise of not needing a 4K switching matrix and a 4K switching table to participate.
Description
Technical Field
The present application relates to the field of television program production technologies, and in particular, to a method, an apparatus, a system, and an electronic device for switching 4K video and audio signals.
Background
At present, most television stations have a certain amount of 4K program recording and broadcasting guide equipment, but the number of the equipment is not enough to support the program recording and editing work. Specifically, 4K cameras are adopted by various television stations, and corresponding devices such as 4K switching matrixes, 4K switching stations, 4K monitors and 4K multichannel recording devices are few.
Therefore, in the prior art, when the 4K switching matrix and the 4K switching station are not available, the switching of the 4K video and audio signals cannot be realized.
Disclosure of Invention
The embodiment of the application provides a method, a device and a system for switching 4K video and audio signals and electronic equipment, which are used for solving the problem that the switching of the 4K video and audio signals cannot be realized when no 4K switching matrix or 4K switching station exists in the prior art.
According to a first aspect of the embodiments of the present application, there is provided a switching method of a 4K video and audio signal, including: when a switching command is sent to the high-definition video and audio signal through a high-definition switching station, the switching command is received; the high-definition video and audio signal and the 4K video and audio signal to be switched are signals with different resolutions which are recorded and synchronously output by the same camera; recording the switching command, wherein the switching command comprises a current time code; and taking the switching command as the switching command of the 4K video-audio signal at the time corresponding to the current time code.
According to a second aspect of the embodiments of the present application, there is provided a switching apparatus for 4K video and audio signals, including: the receiving module is used for receiving the switching command when the high-definition video and audio signals are sent out by the high-definition switching station; the high-definition video and audio signal and the 4K video and audio signal to be switched are signals with different resolutions which are recorded and synchronously output by the same camera; the recording module is used for recording the switching command, wherein the switching command comprises a current time code; and the output module is used for taking the switching command as the switching command of the 4K video-audio signal at the moment corresponding to the current time code.
According to a third aspect of embodiments of the present application, there is provided an electronic apparatus including: a display, a memory, one or more processors; and one or more modules stored in the memory and configured to be executed by the one or more processors, the one or more modules including instructions for performing the steps of the first aspect of the embodiments of the present application.
According to a fourth aspect of the embodiments of the present application, there is provided a switching system for 4K video and audio signals, including: the high-definition switching station is used for receiving switching operation sent out by the high-definition video and audio signals and converting the switching operation into a switching command; and the switching device of the 4K video-audio signal according to the second aspect of the embodiment of the application.
By adopting the switching method, the device and the system for the 4K video and audio signals and the electronic equipment, which are provided by the embodiment of the application, when a switching command is sent to the high-definition video and audio signal which is recorded by the same camera as the 4K video and audio signal to be switched and synchronously output through the high-definition switching platform, the switching command is received and recorded; and then, the switching command is used as the switching command of the 4K video and audio signals at the moment corresponding to the current time code, so that the switching of the 4K video and audio signals under the premise of not needing a 4K switching matrix and a 4K switching table.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a flowchart of a switching method of a 4K video/audio signal according to a first embodiment of the present application;
fig. 2 is a flowchart of a switching method of 4K video/audio signals according to a second embodiment of the present application;
fig. 3 is a schematic diagram of a switching device for 4K video/audio signals according to a third embodiment of the present application;
fig. 4 is a flowchart illustrating a switching method of a 4K video/audio signal according to a fourth embodiment of the present application;
fig. 5 is a schematic diagram illustrating a specific implementation manner of a handover list according to a fourth embodiment of the present application;
fig. 6 is a schematic structural diagram illustrating a switching system for 4K video/audio signals according to a fifth embodiment of the present application;
fig. 7 shows a schematic structural diagram of an electronic device according to a sixth embodiment of the present application.
Detailed Description
In the process of implementing the application, the inventor finds that in the actual production process, because the number of devices such as a 4K switching matrix, a 4K switching table, a 4K monitor, a 4K multichannel recording device and the like is small, the existing director switching table of a studio and a relay van mostly takes a high-definition switching table as a main point; in the prior art, when no 4K switching matrix or 4K switching station exists, the switching of 4K video and audio signals cannot be realized.
In order to solve the above problems, the present application provides a method, an apparatus, a system and an electronic device for switching 4K video/audio signals, wherein when a high-definition switching station sends a switching command to a high-definition video/audio signal recorded by the same camera as the 4K video/audio signal to be switched and synchronously output, the switching command is received and recorded; and then, the switching command is used as the switching command of the 4K video and audio signals at the moment corresponding to the current time code, so that 4K program switching under the premise of not needing a 4K switching matrix and a 4K switching station to participate is realized.
In order to make the technical solutions and advantages of the embodiments of the present application more apparent, the following further detailed description of the exemplary embodiments of the present application with reference to the accompanying drawings makes it clear that the described embodiments are only a part of the embodiments of the present application, and are not exhaustive of all embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
Example one
Fig. 1 is a flowchart of a switching method of 4K video/audio signals according to a first embodiment of the present application. As shown in fig. 1, a method for switching a 4K video/audio signal according to a first embodiment of the present application includes:
s101, receiving a switching command when the high-definition video and audio signals are sent out by a high-definition switching station; the high-definition video and audio signal and the 4K video and audio signal to be manufactured are signals with different resolutions which are recorded and synchronously output by the same camera.
In specific implementation, the 4K camera can output 1 path of 4K signals to the multichannel recording system to acquire 4K video and audio files; meanwhile, the 4K camera can synchronously output a high-definition signal, and the high-definition signal is accessed to a high-definition switching table.
In a specific implementation, the following method may be specifically adopted to receive the handover command: and receiving the switching command through a remote control line accessed to the high-definition switching station, wherein the remote control line is a remote control line of a serial communication port. More specifically, the remote control line may be connected to a COM (serial communication port) port of the high-definition switching station.
Specifically, a remote control line of a serial communication port dedicated for the radio and television equipment may be externally connected, and the remote control line of the serial communication port is independently connected through a COM port and a COM port of the high-definition switching station. Because the serial communication mode has few using lines and low cost, the stability is strong and the interference caused by a plurality of lines is avoided particularly in remote transmission. Meanwhile, serial communication ports are commonly configured on the main switching station equipment. Therefore, the high-definition switching station and the device adopting the method in the embodiment of the application can be conveniently connected for communication.
S102, recording the switching command, wherein the switching command comprises a current time code.
In particular implementations, the handover command includes a handover message and/or a trick message in addition to the current time code. Specifically, the handover command includes a current time code and a handover message; or, the current time code and the trick message; or, the switching command includes the current time code, the switching message and the special effect message. In particular, the trick message may comprise an aliasing message.
When the high-definition switching platform is specifically implemented, after a high-definition SDI signal line of a camera is connected with an input interface of the high-definition switching platform, the high-definition switching platform can acquire access signals and positions of the signals of the high-definition camera in a starting state of the camera. At this time, the high-definition switching station may reserve the number of access high-definition signals (CAM number) and signal positions, after the device adopting the method in the embodiment of the present application is started, an access signal number and signal position acquisition request may be sent to the high-definition switching station through a remote control line, and when the high-definition switching station acquires a high-definition camera signal, the CAM number and position information are provided to the device adopting the method in the embodiment of the present application; thereby facilitating the recording of overlay messages between multiple CAMs.
In a specific implementation, when the handover command is one or more, recording the handover command specifically includes: recording the one or more switch commands in a switch list in metadata XML format; wherein, each line in the switching list corresponds to a switching command.
S103, the switching command is used as the switching command of the 4K video-audio signal at the time corresponding to the current time code.
By adopting the switching method of the 4K video and audio signals provided by the embodiment of the application, when a switching command is sent to the high-definition video and audio signal which is recorded by the same camera as the 4K video and audio signal to be switched and is synchronously output through the high-definition switching platform, the switching command is received and recorded; and then, the switching command is used as the switching command of the 4K video and audio signals at the moment corresponding to the current time code, so that the switching of the 4K video and audio signals under the premise of not needing a 4K switching matrix and a 4K switching table.
The 4K virtual switching technology based on the serial communication port can solve the problem that the 4K switching effect cannot be realized due to the fact that corresponding 4K recording equipment is lacked in most of studios, EFPs (outdoor relay broadcasting systems) and relay carriages, especially expensive professional switching equipment such as a 4K switching station and the like; therefore, the whole-process switching effect of the 4K program can be realized by utilizing the 4K virtual switching technology based on the serial communication port provided by the embodiment.
Example two
Fig. 2 is a flowchart of a switching method of 4K video/audio signals according to a second embodiment of the present application. As shown in fig. 2, the method for switching 4K video and audio signals according to the second embodiment of the present application includes:
s201, receiving a switching command when the high-definition switching station sends the switching command to the high-definition video and audio signals; the high-definition video and audio signal and the 4K video and audio signal to be manufactured are signals with different resolutions which are recorded and synchronously output by the same camera.
In specific implementation, S201 may refer to S101 in the first embodiment of the present application, and details are not repeated.
S202, recording the switching command, wherein the switching command comprises the current time code.
In specific implementation, S202 may refer to S102 in the first embodiment of the present application, and repeated description is omitted here.
S203, the switching command is used as the switching command of the 4K video-audio signal at the time corresponding to the current time code.
In specific implementation, S203 may refer to S103 in the first embodiment of the present application, and details are not repeated.
And S204, the 4K video and audio signals are made into 4K programs according to the switching command.
In a specific implementation, the making the 4K video/audio signal into a 4K program according to the switching command may specifically include: and importing the switching list and the 4K video and audio signals into a video and audio editing tool to generate a corresponding 4K program.
In the prior art, when 4K program production is performed, the following methods are generally adopted: recording signals of a 4K camera and forming a 4K specific video and audio file; then, the 4K specific video and audio files are registered to a 4K production network in a complex uploading mode, and then 4K programs are produced.
However, in the process of implementing the present application, the inventor finds that in the actual production process, because there are few devices such as a 4K switching matrix, a 4K switching table, a 4K monitor, and a 4K multichannel recording, the existing director switching table of a studio and a relay van mostly mainly uses a high-definition switching table; so the only files provided to the 4K production are the camera raw signals; for the post-processor, only the recorded whole 4K video and audio file is obtained. However, as the process of guiding and transferring the switching of the cameras is not available, even if the post-production personnel take the signal videos of all the cameras, the post-production personnel cannot know what happens on the spot, the thinking of the spot program, the transferring condition of each machine position on the spot and the like; the post-production personnel have no rhythm at all, so that the post-production personnel have no way to edit in the later period, can not know how to edit the program, the wonderful program can not be presented, and the production difficulty is very high.
The switching method of the 4K video and audio signals in the embodiment of the application can be used for achieving the purpose of synchronously and virtually switching the 4K signals and recording the 4K point of contact information by matching with the switching of a high-definition switching station. On one hand, the switching of 4K video and audio signals is realized; and on the other hand, the method realizes recording the cut point information of the high-definition switching station and generating a cut point metadata file XML. Meanwhile, all recorded 4K video and audio files and tangent point metadata XML files can be provided for post-production. The later-stage 4K editing system can directly inherit the metadata XML file, when the 4K video-audio file is imported, all the cut point information can be paved on the 4K video-audio file to form 4K cut point information, the cut point information is equivalent to simulating the switching of the director 4K, and the fact that later-stage production personnel can rapidly produce 4K finished programs is provided.
Based on the same inventive concept, the embodiment of the present application further provides a program scheduling apparatus, and as the principle of the apparatus for solving the problem is similar to the method provided in the first embodiment of the present application, the implementation of the apparatus may refer to the implementation of the method, and repeated details are not described herein.
EXAMPLE III
Fig. 3 is a schematic diagram illustrating a switching apparatus for 4K video/audio signals according to a third embodiment of the present application.
As shown in fig. 3, the apparatus 300 for switching 4K video/audio signals according to the third embodiment of the present application includes: a receiving module 301, configured to receive a switching command when the high-definition video/audio signal is sent out by a high-definition switching station; the high-definition video and audio signal and the 4K video and audio signal to be manufactured are signals with different resolutions which are recorded and synchronously output by the same camera; a recording module 302, configured to record the handover command, where the handover command includes a current time code; the output module 303 is configured to use the switching command as a switching command of the 4K video/audio signal at a time corresponding to the current time code.
In particular implementations, the handover command may also include a handover message and/or a trick-play message.
In a specific implementation, the receiving module may specifically be configured to: and receiving the switching command through a remote control line accessed to the high-definition switching station, wherein the remote control line is a remote control line of a serial communication port.
In a specific implementation, the remote control line may be connected to a COM port of the high definition switching station.
In a specific implementation, when the handover command is one or more, the recording module may specifically be configured to: recording the one or more switch commands in a switch list in metadata XML format; wherein, each line in the switching list corresponds to a switching command.
In specific implementation, the apparatus for switching between 4K video and audio signals according to the third embodiment of the present application may further include: and the making module is used for making the 4K video and audio signals into 4K programs according to the switching command.
In specific implementation, the manufacturing module may be specifically configured to: and importing the switching list and the 4K video and audio signals into a video and audio editing tool to generate a corresponding 4K program.
By adopting the switching device for the 4K video and audio signals provided by the embodiment of the application, when a switching command is sent to the high-definition video and audio signal which is recorded by the same camera as the 4K video and audio signal to be switched and is synchronously output through the high-definition switching table, the switching command is received and recorded; and then, the switching command is used as the switching command of the 4K video and audio signals at the moment corresponding to the current time code, so that the switching of the 4K video and audio signals under the premise of not needing a 4K switching matrix and a 4K switching table.
The 4K virtual switching technology based on the serial communication port can solve the problem that the 4K switching effect cannot be realized due to the fact that corresponding 4K recording equipment is lacked in most of studios, EFPs (outdoor relay broadcasting systems) and relay carriages, especially expensive professional switching equipment such as a 4K switching station and the like; therefore, the whole-process switching effect of the 4K program can be realized by utilizing the 4K virtual switching technology based on the serial communication port provided by the embodiment.
By adopting the switching device for the 4K video and audio signals in the embodiment of the application, the purposes of synchronously and virtually switching the 4K signals and recording the 4K point of contact information can be achieved by matching the switching of the high-definition switching station. And recording the contact point information of the high-definition switching station and generating a contact point metadata file XML. And providing all recorded 4K video and audio files and tangent point metadata XML files for post-production. The later-stage 4K editing system can directly inherit the metadata XML file, when the 4K video-audio file is imported, all the cut point information can be paved on the 4K video-audio file to form 4K cut point information, the cut point information is equivalent to simulating the switching of the director 4K, and the fact that later-stage production personnel can rapidly produce 4K finished programs is provided.
By adopting the switching device for the 4K video and audio signals in the embodiment of the application, the switching process of the 4K switching table can be replaced. 4K switching stations, 4K multi-picture monitoring and 4K corresponding equipment at the back end are not needed. The 4K video and audio signal switching device in the embodiment of the application is only required to be used for butting a broadcasting guide switching table through a remote control line; and obtaining the CAM access number of the switching station. Under the condition of ensuring 4K multichannel recording, switching information (including special effect information) of the director in the switching process of the switching station is sent to a switching device of the 4K video and audio signals in the embodiment of the application in a task form, and is recorded by the switching device of the 4K video and audio signals in the embodiment of the application, and the cut point and overlapping information of the high-definition switching station is recorded in real time; and forms a handoff list. The acquired switching information is equal to all switching processes of the director, and is equal to a PGM file with a 4K version in cooperation with all recorded 4K video and audio files.
Example four
Fig. 4 is a flowchart illustrating a switching method of a 4K video/audio signal according to a fourth embodiment of the present application. As shown in fig. 4, a method for switching a 4K video/audio signal according to a fourth embodiment of the present application includes:
and starting a high-definition switching station and accessing signals of all cameras. At the moment, the high-definition switching station receives all high-definition video and audio signals of the camera;
starting a switching device, wherein a remote control line of a serial communication port is independently connected with a COM port of a high-definition switching table through the COM port;
when the director clicks buttons such as the switching station CAM1-CAM20 and/or corresponding switching tricks, the switching station sends a switching information command; (the command contains the message service and the handoff time code, which is accurate to the frame);
the switching device receives a switching command sent by a high-definition switching station through a remote control line of a serial communication port, receives the message through a virtual switching service, converts the message into self-identified information and simultaneously records the current switching time code; specifically, the switching device receives a CAM switching command and a special effect command sent by the switching station, and the CAM switching command and the special effect command comprise CAM switching position information, time points of two switching, special effect and special effect duration. The information is sent to a virtual switching server through a serial communication port, and the virtual switching server receives the information in real time and converts the information into a switching point, a CAM current switching position, a trick switching point and a duration point which are identified by a system;
while receiving the switching information, the corresponding switching information, as well as the switching trick-play information and time code, are processed internally in the system to generate a switching list (which corresponds to the PGM of the director switch) as shown in fig. 5.
The switch list (PGM of high definition signal) may be subsequently provided to a post production non-compilation together with all recorded 4K camera signal files, the post production non-compilation may import a metadata XML (switch list) file and a 4K recorded multi-channel video-audio file, the 4K material on the timeline may carry the XML file of the metadata, and the material may display the cut point information of 4K. Later-stage personnel can freely know what stories occur on site, and the 4K programs are made by fine selection according to the switching process of the program guide.
By adopting the switching method of the 4K video and audio signals in the embodiment of the application, the switching process of the 4K switching station can be replaced. 4K switching stations, 4K multi-picture monitoring and 4K corresponding equipment at the back end are not needed. The switching station of the director is only needed to be docked through the switching device of the 4K video and audio signals in the embodiment of the application through a remote control line, and the CAM access number of the switching station is obtained. Under the condition of ensuring 4K multichannel recording, switching information (including special effect information) of the director in the switching process of the switching station is sent to a switching device of the 4K video and audio signals in the embodiment of the application in a task form, and is recorded by the switching device of the 4K video and audio signals in the embodiment of the application, and the cut point and overlapping information of the high-definition switching station is recorded in real time; and forms a handoff list. The acquired switching information is equal to all switching processes of the director, and is equal to a PGM file with a 4K version in cooperation with all recorded 4K video and audio files.
Based on the same inventive concept, the embodiment of the present application further provides a switching system for 4K video/audio signals, and as the principle of the system for solving the problem is similar to the method provided in the first embodiment of the present application, the implementation of the apparatus may refer to the implementation of the method, and repeated details are not repeated.
EXAMPLE five
Fig. 6 is a schematic structural diagram illustrating a switching system for 4K video/audio signals according to a fifth embodiment of the present application.
As shown in fig. 6, a system 600 for switching 4K video and audio signals according to a fifth embodiment of the present application includes: the high-definition switching station 601 is used for receiving switching operation sent to high-definition video and audio signals and converting the switching operation into a switching command; and a switching device 300 for 4K video/audio signals according to the third embodiment of the present application.
In practice, the high definition switch 600 and the switch 300 are connected to each other through a remote control line of a serial communication port.
The switching system of the 4K video and audio signals in the embodiment of the application can achieve the purpose of synchronously and virtually switching the 4K signals and recording the 4K contact information through the switching of the high-definition switching station. On one hand, the switching of 4K video and audio signals is realized; and on the other hand, the method realizes recording the cut point information of the high-definition switching station and generating a cut point metadata file XML. Meanwhile, all recorded 4K video and audio files and tangent point metadata XML files can be provided for post-production. The later-stage 4K editing system can directly inherit the metadata XML file, when the 4K video-audio file is imported, all the cut point information can be paved on the 4K video-audio file to form 4K cut point information, the cut point information is equivalent to simulating the switching of the director 4K, and the fact that later-stage production personnel can rapidly produce 4K finished programs is provided.
Based on the same inventive concept, the embodiment of the present application further provides an electronic device, and since the principle of the electronic device for solving the problem is similar to the method provided in the first embodiment of the present application, the implementation of the apparatus may refer to the implementation of the method, and repeated details are not described again.
EXAMPLE six
Fig. 7 shows a schematic structural diagram of an electronic device according to a sixth embodiment of the present application.
As shown in fig. 7, an electronic device 700 according to a fifth embodiment of the present application includes: a display 701, a memory 702, one or more processors 703; a bus 704; and one or more modules stored in the memory and configured to be executed by the one or more processors, the one or more modules including instructions for performing the steps of the method for switching a 4K video and audio signal in the first embodiment of the present application.
The electronic equipment in the embodiment of the application can be used for achieving the purpose of synchronously and virtually switching the 4K signals and recording the 4K contact point information by matching with the switching of the high-definition switching table. On one hand, the switching of 4K video and audio signals is realized; and on the other hand, the method realizes recording the cut point information of the high-definition switching station and generating a cut point metadata file XML. Meanwhile, all recorded 4K video and audio files and tangent point metadata XML files can be provided for post-production. The later-stage 4K editing system can directly inherit the metadata XML file, when the 4K video-audio file is imported, all the cut point information can be paved on the 4K video-audio file to form 4K cut point information, the cut point information is equivalent to simulating the switching of the director 4K, and the fact that later-stage production personnel can rapidly produce 4K finished programs is provided.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (13)
1. A method for switching 4K video and audio signals is characterized by comprising the following steps:
when a switching command is sent to a high-definition video and audio signal through a high-definition switching station, the switching command is received; the high-definition video and audio signal and the 4K video and audio signal to be switched are signals with different resolutions which are recorded and synchronously output by the same camera;
recording the switching command, wherein the switching command comprises a current time code;
and taking the switching command as the switching command of the 4K video and audio signal at the moment corresponding to the current time code.
2. The method according to claim 1, wherein the handover command further comprises a handover message and/or a trick-play message.
3. The method according to claim 1, wherein receiving the handover command specifically includes:
and receiving the switching command through a remote control line accessed to the high-definition switching table, wherein the remote control line is a remote control line of a serial communication port.
4. The method according to claim 1, wherein when the handover command is one or more, recording the handover command specifically includes:
recording the one or more switch commands in a switch list in a metadata XML format; each line in the switching list corresponds to one switching command.
5. The method of claim 4, further comprising:
and making the 4K video and audio signals into 4K programs according to the switching command.
6. The method according to claim 5, wherein the producing the 4K video and audio signal as a 4K program according to the switching command specifically comprises:
and importing the switching list and the 4K video and audio signals into a video and audio editing tool to generate a corresponding 4K program.
7. A switching device for 4K video/audio signals, comprising:
the receiving module is used for receiving a switching command when the high-definition switching station sends the switching command to the high-definition video and audio signals; the high-definition video and audio signal and the 4K video and audio signal to be switched are signals with different resolutions which are recorded and synchronously output by the same camera;
the recording module is used for recording the switching command, wherein the switching command comprises a current time code;
and the output module is used for taking the switching command as the switching command of the 4K video and audio signal at the moment corresponding to the current time code.
8. The apparatus according to claim 7, wherein the handover command further comprises a handover message and/or a trick message.
9. The apparatus of claim 7, wherein the receiving module is specifically configured to:
and receiving the switching command through a remote control line accessed to the high-definition switching table, wherein the remote control line is a remote control line of a serial communication port.
10. The apparatus according to claim 7, wherein when the handover command is one or more, the recording module is specifically configured to:
recording the one or more switch commands in a switch list in a metadata XML format; each line in the switching list corresponds to one switching command.
11. The apparatus of claim 10, further comprising:
and the making module is used for making the 4K video and audio signals into 4K programs according to the switching command.
12. The apparatus according to claim 11, wherein the production module is specifically configured to:
and importing the switching list and the 4K video and audio signals into a video and audio editing tool to generate a corresponding 4K program.
13. A switching system for 4K video/audio signals, comprising:
the high-definition switching station is used for receiving switching operation sent out by the high-definition video and audio signals and converting the switching operation into a switching command; and
the switching apparatus of 4K video and audio signal according to any one of claims 7-12.
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| CN111327923B (en) * | 2018-12-13 | 2021-08-20 | 华为技术有限公司 | Audio stream switching method and device |
| CN112468740B (en) * | 2020-11-11 | 2022-12-23 | 新奥特（北京）视频技术有限公司 | Intelligent virtual synthesis manufacturing system, method and storage medium for 8K ultra-high definition programs |
| CN114422717B (en) * | 2021-12-06 | 2024-01-05 | 新奥特（北京）视频技术有限公司 | Method and device for managing and controlling rebroadcast recording on cloud, electronic equipment and storage medium |
| CN114302061B (en) * | 2021-12-31 | 2023-08-29 | 北京中联合超高清协同技术中心有限公司 | 8K and 4K synchronous mixed manufactured ultra-high definition video rebroadcasting vehicle and rebroadcasting method |
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