CN114302064B - Video processing method, device and system based on receiving card - Google Patents
Video processing method, device and system based on receiving card Download PDFInfo
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Abstract
The invention discloses a video processing method, a device and a system based on a receiving card, wherein the method comprises the following steps: acquiring video source data and shooting requirement information issued by a transmitting device; determining a target display frame rate of the video source data in the playing process according to shooting requirement information and performing frequency multiplication processing on the video source data according to the target display frame rate; determining the play field of each frame of video picture in the video source data after the frequency multiplication processing according to the refresh rate of the LED display screen; according to shooting requirement information and the playing scenes, splitting and recombining each frame of video picture and the corresponding playing scene to obtain a video to be played; and playing the video to be played on the LED display screen. The problem that the effect shot by the cameras with different positions is inconsistent when the LED display screen is used as a shooting background is solved by carrying out frequency multiplication processing and splitting recombination on video source data issued by the sending equipment, so that the shot effect is ensured to be closer to the display effect of an object in reality.
Description
Technical Field
The invention relates to the technical field of LED display screen display, in particular to a video processing method, device and system based on a receiving card.
Background
In the shooting process of a movie or a playing program, a plurality of cameras at different positions (machine positions) are adopted for shooting, and for actual background shooting, the background shot by the cameras at the plurality of positions can have obvious difference in shooting effect formed at the different positions due to the three-dimensional characteristics of a real object, namely, the background effect shot by each camera is inconsistent. If an LED display screen is used to form a virtual background picture, and when the LED display screen is shot by shooting with multiple camera positions, only one identical background picture can be shot (when the LED display screen only displays one picture, the background pictures shot by two or more cameras are identical), and there is an inconsistent shooting effect with the actual scene. In addition, in the prior art, a transmission device is generally used to implement a video data transmission process of virtual shooting, where picture pixels of video data transmission are affected by an upper limit of data transmission (the larger the frame rate is, the fewer picture pixels are transmitted, the frame rate is the picture display content per frame=the data amount of video data transmission, and the data amount of video data transmission is a constant rate). In view of the foregoing, a need exists for a solution to the foregoing problems.
Disclosure of Invention
In order to overcome the problems in the related art, the invention discloses a video processing method, a device and a system based on a receiving card.
According to a first aspect of the disclosed embodiments of the present invention, there is provided a video processing method based on a receiving card, the method comprising:
acquiring video source data and shooting requirement information issued by a transmitting device;
determining a target display frame rate of video source data in the playing process according to shooting demand information and performing frequency multiplication processing on the video source data according to the target display frame rate;
determining the play field of each frame of video picture in the video source data after the frequency multiplication processing according to the refresh rate of the LED display screen;
splitting and recombining each frame of video picture and the corresponding playing field according to shooting requirement information and the playing field to obtain a video to be played;
and playing the video to be played on the LED display screen.
Optionally, the determining, according to the shooting requirement information, a target display frame rate of the video source data in the playing process and performing frequency multiplication processing on the video source data according to the target display frame rate includes:
determining a target display frame rate of the video source data in the playing process according to the shooting demand information;
if the video source data are single video source data, copying each frame of video picture at least once according to the target display frame rate;
and if the video source data are multiple video source data, carrying out source superposition on video pictures in each video source data.
Optionally, the determining the play field of each frame of video picture in the video source data after the frequency multiplication processing according to the refresh rate of the LED display screen includes:
determining a refresh rate N of the LED display screen;
and determining the play field of each frame of video picture in the video source data after the frequency multiplication processing according to the refresh rate N and the target display frame rate, wherein the play field=N/the target display frame rate.
Optionally, the splitting and reorganizing each frame of video picture and the corresponding play field according to the shooting requirement information and the play field to obtain the video to be played includes:
determining a plurality of play orders corresponding to each frame of video picture;
splitting and reorganizing each play field corresponding to all video pictures in the frequency-doubled video source data according to shooting requirement information;
and obtaining the video to be played after splitting and recombining.
Optionally, the method further comprises:
if the pure color background image is needed to be inserted in the playing process of the video to be played, determining a video picture and a corresponding playing field number which are needed to be inserted with the pure color background image;
and at the play field corresponding to the video picture, lighting the R lamp point, the B lamp point and/or the G lamp point on the LED display screen so that the LED display screen displays the solid background image.
Optionally, the method further comprises:
if the pre-stored image is needed to be inserted in the playing process of the video to be played, determining a video picture and a corresponding playing scene which need to be inserted with the pre-stored image;
and displaying the prestored image on the LED display screen at the play field corresponding to the video picture.
Optionally, the method further comprises:
if a black field needs to be inserted in the video playing process to be played, determining a video picture needing to be inserted with the black field and a corresponding playing field time;
and inserting a black field at the play field corresponding to the video picture.
Optionally, the method further comprises:
if the display brightness of the picture is required to be adjusted in the video playing process to be played, determining the video picture and the corresponding playing field number which are required to be adjusted in the display brightness;
and adjusting the brightness of R, B and G lamps on the LED display screen at the play field corresponding to the video picture so as to adjust the display brightness at the play field corresponding to the video picture to be a target brightness value.
According to a second aspect of the disclosed embodiments of the present invention, there is provided a video processing apparatus based on a receiving card, the apparatus comprising:
the video source data acquisition module acquires video source data and shooting requirement information issued by the sending equipment;
the frequency multiplication processing module is connected with the video source data acquisition module, determines the target display frame rate of the video source data in the playing process according to shooting requirement information, and carries out frequency multiplication processing on the video source data according to the target display frame rate;
the play scene determining module is connected with the frequency multiplication processing module and is used for determining play scenes of each frame of video pictures in the video source data after frequency multiplication processing according to the refresh rate of the LED display screen;
the video to be played acquisition module is connected with the play scene determination module, and each frame of video picture and the corresponding play scene are split and recombined according to shooting requirement information and the play scene to acquire a video to be played;
and the video playing module is connected with the video obtaining module to be played and plays the video to be played on the LED display screen.
According to a third aspect of the disclosed embodiments of the present invention, there is provided a video processing system based on a receiving card, the system comprising: a transmitting device, at least one camera, a receiving card, and a video processing apparatus according to a second aspect of the disclosed embodiments of the present invention;
the sending equipment is connected with the receiving card and is used for sending video source data to the receiving card and shooting requirement information generated based on the at least one camera;
the video processing device is located in the receiving card and is used for implementing the video processing method according to the first aspect of the disclosed embodiment of the invention;
and the at least one camera is used for shooting the LED display screen corresponding to the receiving card.
In summary, through the technical scheme disclosed by the invention, the following beneficial effects can be brought:
the problem that the effect shot by the cameras with different positions is inconsistent when the LED display screen is used as a shooting background is solved by carrying out frequency multiplication processing and splitting recombination on video source data issued by the sending equipment, so that the shot effect is closer to and more real than the display effect of an object in reality is ensured. Meanwhile, the problem that the actual scenery is taken as the background when a movie or other scenes are taken at present can be solved, and therefore the efficiency of picture taking is improved. In addition, the problem that the transmission of picture pixels is affected due to the limitation of the sending equipment on the video frame rate issued by the sending equipment is solved by performing multiplying power processing on the video source data in the receiving card.
Additional features and advantages of the present disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification, illustrate the disclosure and together with the description serve to explain, but do not limit the disclosure. In the drawings:
FIG. 1 is a flow chart illustrating a method of video processing based on a receiver card, according to an exemplary embodiment;
FIG. 2 is a flow chart of a frequency doubling processing method according to the one shown in FIG. 1;
FIG. 3 is a flow chart of a play session determination method according to the one shown in FIG. 1;
fig. 4 is a block diagram showing a structure of a video processing apparatus based on a receiving card according to an exemplary embodiment.
Detailed Description
The following describes in detail the embodiments of the present disclosure with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the disclosure, are not intended to limit the disclosure.
Fig. 1 is a flowchart illustrating a video processing method based on a receiving card according to an exemplary embodiment, and as shown in fig. 1, the method includes:
in step 101, video source data and shooting requirement information issued by a transmitting device are acquired.
Illustratively, the shooting requirement information relates to the number of cameras enabled during shooting of the video source for constraining the playback effect of each frame of video pictures in the video source data. In general, a target display frame rate of video source data, the number of plays (field times) of each frame of video picture, the order of plays between different numbers of plays of each frame of video picture, and the like may be determined according to shooting demand information. It can be understood that the sending device sends the shooting requirement information to the receiving card in the form of a data instruction (the data instruction originates from the upper computer) in the process of sending the video source data to the receiving card, and the receiving card processes the video source data according to the shooting requirement information after receiving the data instruction so as to achieve the expected playing effect in the playing process.
In step 102, a target display frame rate of the video source data in the playing process is determined according to the shooting requirement information, and frequency multiplication processing is performed on the video source data according to the target display frame rate.
For example, the shooting requirement information may include a target display frame rate of the video source data, where the target display frame rate is an integer multiple of an original display frame rate of the video source data, and thus, the video source data may be adjusted to a target display frame rate required in the shooting requirement information by performing frequency multiplication processing on the video source data. For example, if the original display frame rate of the video source data is 60HZ and the target display frame rate is 240HZ, the video source data is subjected to frequency multiplication processing to adjust the display frame rate to 240HZ. The display frame rate refers to the frequency at which video pictures in the video source data are played on the display, and is typically expressed using HZ (hertz), 1HZ indicating that 1 frame of video picture is displayed per second. It will be appreciated that after determining the display frame rate of the video, the play-out interval time between every two adjacent frames of video frames is determined, for example, the play-out interval time between every two adjacent frames of video frames in the 60HZ video is 16.67ms.
It should be noted that the target display frame rate must be a frequency that the receiving card can support (i.e., the target display frame rate is within a frequency range supported by the receiving card), and is specifically related to the PCB, clock quality, and control area of the receiving card.
Wherein fig. 2 is a flowchart of a frequency multiplication processing method according to the method shown in fig. 1, and as shown in fig. 2, the step 102 includes:
in step 1021, a target display frame rate of the video source data during playback is determined according to the shooting requirement information.
If the video source data is single video source data, at least one copy of each frame of video is performed at the target display frame rate in step 1022.
For example, the video source data is divided into single video source data and multiple video source data, and when the receiving card only has one input interface to receive the video source data, the received video source data is the single video source data. If the video source data is single video source data, the frequency multiplication processing is carried out on the video source data, namely, each frame of video picture in the single video source data is duplicated for a plurality of times until the display frame rate of the video source data reaches the target display frame rate. For example, if the original display frame rate of the single video source data is 60HZ and the target display frame rate is 240HZ, each frame of video picture in the single video source data is duplicated in four copies, so as to obtain four identical video pictures.
In step 1023, if the video source data is multi-video source data, the video frames in each video source data are subjected to source superimposition.
For example, when multiple interfaces in the receiving card receive multiple video source data at the same time, the multiple video source data are multiple video source data, for example, 4 sending devices are respectively connected with the receiving card and send 4 video source data to the receiving card, or 4 interfaces in one sending device are respectively connected with 4 interfaces in the receiving card and send 4 video source data to the receiving card through the connected 4 interfaces, and at this time, the receiving card receives the multiple video source data. Taking the example that the 4 sending devices respectively send video source data to the receiving card, frequency multiplication processing is carried out on the multi-video source data, namely, source superposition is carried out on video pictures in each video source data respectively sent by the 4 sending devices. Specifically, the transmitting device 1 transmits the video source data 1 to the receiving card, the video picture surfaces of the video source data 1 are A1, B1, C1, D1 … …, the transmitting device 2 transmits the video source data 2 to the receiving card, the video picture surfaces of the video source data 2 are A2, B2, C2, D2 … …, the transmitting device 3 transmits the video source data 3 to the receiving card, the video picture surfaces of the video source data 3 are A3, B3, C3, D3 … …, the transmitting device 4 transmits the video source data 4 to the receiving card, the video picture surfaces of the video source data 4 are A4, B4, C4, D4 … …, and if the display frame rates of the video source data 1, the video source data 2, the video source data 3, and the video source data 4 are all 60HZ, and the target display frame rates are 240HZ, the frequency doubling processing is to source the video source data 1, the video source data 2, the video source data 3, and the video source data 4 according to the playing sequence in the shooting requirement information, and the usual case that the display frame rates of the superimposed video picture surfaces are A4, B4, A1, B4, C2, C4, D1, D2, D4 and D1.
In addition, it may be understood that the playing order in the shooting requirement information is preset according to the shooting content of the camera, for example, when the playing order is that the content shot by the camera 1 is played first, and then the content shot by the camera 2, the content shot by the camera 3 and the content shot by the camera 4 are played sequentially, the video picture sequence after source superposition is A1, A2, A3, A4, B1, B2, B3, B4, C1, C2, C3, C4, D1, D2, D3, D4 … … described above.
In step 103, the play field of each frame of video picture in the video source data after the frequency multiplication processing is determined according to the refresh rate of the LED display screen.
Illustratively, "field" represents the total number of times each frame of video picture is displayed during the playing of the video source data, the number of times being related to the refresh rate of the LED display screen; the refresh rate of the LED display screen is related to the number of scans of the driving chip in the LED display screen, that is, represents the number of times of completing one complete scan per second, for example, 32 scans are required to complete one complete scan. As shown in fig. 3, a flowchart of a play session determining method is shown, and the step 103 includes: in step 1031, determining a refresh rate N of the LED display screen; in step 1032, the play field of each frame of video picture in the video source data after the frequency multiplication is determined according to the refresh rate N and the target display frame rate, where play field=n/target display frame rate. Taking the video source data sent by the above 4 sending devices as an example, if the refresh rate of the LED display screen is 3840HZ and the display frame rate of the video source data after the frequency doubling processing is 240HZ (the target display frame rate), the number of times of displaying each frame of video picture is 3840HZ/240 hz=16, that is, the playing field of each frame of video picture in the video source data after the frequency doubling processing is 16 fields (it can be understood that if the video source data is not subjected to the frequency doubling processing, the playing field of the video source data with the display frame rate of 60HZ is 64 fields), that is, the A1 plays 16 fields, the A2 plays 16 fields, the A3 plays 16 fields, and the A4 plays 16 fields … ….
In step 104, according to the shooting requirement information and the play orders, splitting and reorganizing each frame of video picture and the corresponding play orders to obtain the video to be played.
For example, taking the video source data of the A1 play 16 field, the A2 play 16 field, the A3 play 16 field, and the A4 play 16 field … … in the above step 103 as an example, if each frame of video picture and the corresponding play field are not split and recombined, the video is directly played according to the sequence of the A1 play 16 field, the A2 play 16 field, the A3 play 16 field, and the A4 play 16 field … …, then for the eyes of observing the LED display screen, the problem of overlapping of the pictures will occur, and a ghost phenomenon will occur. Therefore, in the embodiment of the present invention, after frequency multiplication is performed on video source data and a play field of each frame of video picture is determined, splitting and reorganizing are performed on each play field corresponding to each frame of video picture, and after the splitting and reorganizing process is completed, a video to be played is generated. The splitting and reorganizing process still needs to be performed according to the shooting requirement information, for example, if the shooting requirement information specifies that the video picture corresponding to A1 is a video picture mainly displayed, and the video pictures A2, A3 and A4 are video pictures which are not expected to be observed by human eyes (the video pictures corresponding to A2, A3 and A4 can be shot by a camera, but the stay time of A2, A3 and A4 on the LED display screen is less than the persistence time of vision of human eyes, so that the stay time is not perceived by an observer), when splitting and reorganizing are performed according to the shooting requirement information, the playing sequence can be adjusted to play 16 fields A1 first, then play 1 field A2, 15 field A1, 1 field A3, 15 field A1, 1 field A4 and 15 field A1 sequentially. Therefore, after splitting and reorganizing, the number of play scenes is increased by A1, so that the problem of double image can not occur to the whole eyes of people, and video pictures A1, A2, A3 and A4 can still be shot for a camera; in addition, it should be noted that the above example is just an application scenario, and the shooting requirement information may be further adjusted according to the expected display effect, for example, if the video frame corresponding to A2 is a video frame mainly displayed, and A1, A3, and A4 are video frames not desired to be observed by human eyes, the shooting requirement information may specify that the play order after splitting and reorganizing is: first, 16 fields A2 are played, and then 2 fields A1, 14 fields A2, 1 field A3, 15 fields A2, 1 field A4 and 15 fields A2 are played in order.
In the above example, when the video picture and the corresponding play field are split and recombined, the added field of the video picture that is mainly shot is not fixed (i.e., when the video picture that is mainly displayed with A1 is not necessarily 1 field A2, 15 field A1, 1 field A3, 15 field A1, 1 field A4, and 15 field A1, the play field of A1 is added and the play field of A2, A3, and A4 is reduced), so long as the time that the video picture that is not expected to be observed by human eyes after the split and recombined stays on the LED display screen is less than the persistence time. For example, taking the above example of playing 16 fields A1 first, then sequentially playing 1 field A2, 15 fields A1, 1 field A3, 15 fields A1, 1 field A4 and 15 fields A1, if the refresh rate of the LED display screen is 3840HZ, the time that each play field of each frame of video picture stays on the LED display screen is 60s/3840 hz= (1/64) s=0.016 s. The persistence time is usually 0.1s, and in the above example, after splitting and reorganizing, A2, A3 and A4 only play one field, so the residence time of the LED display screen is 0.016s, which is less than the persistence time of 0.1s, so when playing according to the play order after splitting and reorganizing in the above example, the video frames corresponding to A2, A3 and A4 cannot be observed by human eyes. In other examples of split-recombination, a video frame that is not desired to be viewed by the human eye may also be played multiple shots, as long as the dwell time on the LED display screen during play is less than the persistence time of 0.1 s.
In step 105, the video to be played is played on the LED display screen.
The video to be played generated after splitting and recombining is played on an LED display screen.
In another embodiment of the present disclosure, if a solid background image needs to be inserted in the process of playing the video to be played, determining a video frame and a corresponding playing scene that need to be inserted with the solid background image; and (3) at the play field corresponding to the video picture, lighting the R lamp point, the B lamp point and/or the G lamp point on the LED display screen so as to enable the LED display screen to display the solid background image.
For example, a frame of video picture and a corresponding play field in the video to be played after frequency multiplication processing and splitting recombination can be replaced by a green screen (for example, a specific picture needs to be made by using the green screen in a certain application scene) or a pure color background image of other colors, then the video picture and the corresponding play field of the pure color background image of the green screen or other colors need to be first determined, and the video picture and the corresponding play field of the pure color background image of the green screen or other colors need to be replaced by lighting an R lamp point, a B lamp point and/or a G lamp point on the LED display screen. For example, if the picture displayed at a certain play field corresponding to a certain frame of video picture needs to be replaced by a green screen, only the G lamp point and the R lamp point on the LED display screen are turned on, and the R lamp point and the B lamp point are turned off, so that the LED display screen presents a green screen effect at the play field. Or if the picture displayed at a certain play field corresponding to a certain frame of video picture is required to be replaced by a red background image, only the R lamp point on the LED display screen is turned on, and the G lamp point and the B lamp point are turned off, so that the LED display screen displays the red background image at the play field. In addition, the background image of the green curtain or other color may be generated by the receiving card (the lighting of the same color light is achieved by controlling the lighting of the light by the receiving card).
In another embodiment of the present disclosure, if a pre-stored image needs to be inserted in the process of playing the video to be played, determining a video frame and a corresponding playing session of the pre-stored image need to be inserted; and displaying the prestored image on the LED display screen at the play field corresponding to the video picture.
For example, the principle of inserting the green screen is the same as that described above, and a certain frame of video picture in the video to be played and the corresponding play field may be replaced by a pre-stored image (the pre-stored image may also be inserted, that is, the video picture is still played, but the pre-stored image is inserted in the playing process of the video picture), where the pre-stored image may be a pre-stored picture with a prompt subtitle (for example, in a certain application scenario, a host needs to perform a screen, etc.), a pre-stored bubble picture, a pre-stored special effect picture, etc.
In yet another embodiment of the present disclosure, a register may be further set on the first video frame (set in the receiving card) or on the last video frame, for saving time of video playing.
In another embodiment of the present disclosure, if the display brightness of the picture needs to be adjusted in the process of playing the video to be played, determining the video picture and the corresponding play field needing to be adjusted in the display brightness; and adjusting the brightness of the R lamp point, the B lamp point and the G lamp point on the LED display screen at the play field corresponding to the video picture so as to adjust the display brightness at the play field corresponding to the video picture to be a target brightness value.
For example, when a certain frame of video picture and a corresponding playing field are displayed on the LED display screen, the brightness of the light point in the LED display screen can be adjusted, so that the picture content displayed at the playing field corresponding to the frame of video picture can be better adapted to the shooting requirement information (for example, a certain application scene may need a picture with dark brightness).
In another embodiment of the present disclosure, if a black field needs to be inserted in the video playing process to be played, determining a video frame and a corresponding playing field number which need to be inserted with the black field; black fields are inserted at play field times corresponding to the video pictures.
For example, the automatic black field insertion function of the receiving card may also be turned off, and the black field may be manually inserted instead. The black field refers to that the LED display screen does not display video pictures in a certain refreshing process, i.e. a margin is left between two playing fields of a certain frame of video pictures or between two frames of video pictures. The specific process comprises the following steps: determining video pictures needing to be inserted with black fields and corresponding play field times; black fields are inserted at play field times corresponding to the video pictures. In this way, the camera shutter (the reason why the shutter needs to be aligned is that the LED display is turned on in a sweeping manner, and the camera also needs to take a picture of the turned-on light point in this manner, and therefore the camera shutter needs to be aligned) can be aligned by manually inserting black (while adjusting the position of inserting black, the display effect is referred to), so as to solve the problem that the camera shutter is not aligned in automatic black insertion (the camera shutter is not aligned and may affect the viewing effect of human eyes, such as the gray display effect, and the black field is inserted at the same position of each frame).
In addition, in still another embodiment of the present disclosure, the initial display phase of the video (how long to start displaying after vsync) may be adjusted, for example, a black field (field display screen) of an inserted field in the third frame, that is, a black field starts to be displayed after the second frame, and the initial display phase may be set at the initial position of the third frame.
Fig. 4 is a block diagram illustrating a structure of a video processing apparatus based on a receiving card according to an exemplary embodiment, and as shown in fig. 4, the apparatus 400 includes:
the video source data acquisition module 410 acquires video source data and shooting requirement information issued by the sending equipment;
the frequency multiplication processing module 420 is connected with the video source data acquisition module 410, determines a target display frame rate of the video source data in the playing process according to shooting requirement information, and carries out frequency multiplication processing on the video source data according to the target display frame rate;
the play field determining module 430 is connected with the frequency multiplication processing module 420, and determines play fields of each frame of video pictures in the frequency multiplication processed video source data according to the refresh rate of the LED display screen;
the video to be played acquisition module 440 is connected with the play scene determination module 430, and splits and reorganizes each frame of video picture and the corresponding play scene according to shooting requirement information and the play scene to acquire video to be played;
the video playing module 450 is connected to the to-be-played video obtaining module 440, and plays the to-be-played video on the LED display screen.
The invention also provides a video processing system based on the receiving card, which comprises: a transmitting device, at least one camera, a receiving card, and a video processing apparatus; the sending equipment is connected with the receiving card and is used for sending video source data and shooting requirement information generated based on the at least one camera to the receiving card; the video processing device is positioned in the receiving card and is used for realizing the video processing method; the at least one camera is used for shooting the LED display screen corresponding to the receiving card.
In summary, through the technical scheme disclosed by the invention, the following beneficial effects can be brought:
the problem that the effect shot by the cameras with different positions is inconsistent when the LED display screen is used as a shooting background is solved by carrying out frequency multiplication processing and splitting recombination on video source data (multi-frame images) issued by the sending equipment, so that the shot effect is more close to and real with the display effect of an object in reality. Meanwhile, the problem that the actual scenery is taken as the background when the movie or the program is recorded or other scenes are shot at present can be solved, and therefore, the efficiency of picture shooting is improved. And the problem that the transmission of picture pixels is affected due to the limitation of the sending equipment on the video frame rate issued by the sending equipment is solved by performing multiplying power processing on the video source data in the receiving card.
In addition, the display of the subframes (fields) can be realized by splitting and recombining different fields of each frame of video picture, a green screen or other solid-color background images, pre-stored images, black fields and the like can be displayed at the play fields corresponding to the appointed video picture, the transmission of a register can be closed, the different brightness adjustment of different subframes (fields) is supported, and the pictures played on the LED display screen are diversified, so that the shooting requirements of different camera positions in different time periods can be met.
The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings, but the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solutions of the present disclosure within the scope of the technical concept of the present disclosure, and all the simple modifications belong to the protection scope of the present disclosure.
In addition, the specific features described in the foregoing embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, the present disclosure does not further describe various possible combinations.
Moreover, any combination between the various embodiments of the present disclosure is possible as long as it does not depart from the spirit of the present disclosure, which should also be construed as the disclosure of the present disclosure.
Claims (8)
1. A method of video processing based on a receiver card, the method comprising:
acquiring video source data and shooting requirement information issued by a transmitting device;
determining a target display frame rate of video source data in the playing process according to shooting demand information and performing frequency multiplication processing on the video source data according to the target display frame rate;
determining the play field of each frame of video picture in the video source data after the frequency multiplication processing according to the refresh rate of the LED display screen;
splitting and recombining each frame of video picture and the corresponding playing field according to shooting requirement information and the playing field to obtain a video to be played;
playing the video to be played on the LED display screen;
the method for determining the target display frame rate of the video source data in the playing process according to the shooting requirement information and performing frequency multiplication processing on the video source data according to the target display frame rate comprises the following steps: determining a target display frame rate of the video source data in the playing process according to the shooting demand information; if the video source data are single video source data, copying each frame of video picture at least once according to the target display frame rate; if the video source data are multiple video source data, carrying out source superposition on video pictures in each video source data;
according to shooting requirement information and the play scenes, splitting and recombining each frame of video picture and the corresponding play scene to obtain a video to be played, wherein the method comprises the following steps: determining a plurality of play orders corresponding to each frame of video picture; splitting and reorganizing each play field corresponding to all video pictures in the frequency-doubled video source data according to shooting requirement information; and obtaining the video to be played after splitting and recombining.
2. The video processing method based on the receiving card according to claim 1, wherein the determining the play field of each frame of video picture in the video source data after the frequency multiplication according to the refresh rate of the LED display screen includes:
determining a refresh rate N of the LED display screen;
and determining the play field of each frame of video picture in the video source data after the frequency multiplication processing according to the refresh rate N and the target display frame rate, wherein the play field=N/the target display frame rate.
3. The method of receiver card based video processing of claim 1, further comprising:
if the pure color background image is needed to be inserted in the playing process of the video to be played, determining a video picture and a corresponding playing field number which are needed to be inserted with the pure color background image;
and at the play field corresponding to the video picture, lighting the R lamp point, the B lamp point and/or the G lamp point on the LED display screen so that the LED display screen displays the solid background image.
4. The method of receiver card based video processing of claim 1, further comprising:
if the pre-stored image is needed to be inserted in the playing process of the video to be played, determining a video picture and a corresponding playing scene which need to be inserted with the pre-stored image;
and displaying the prestored image on the LED display screen at the play field corresponding to the video picture.
5. The method of receiver card based video processing of claim 1, further comprising:
if a black field needs to be inserted in the video playing process to be played, determining a video picture needing to be inserted with the black field and a corresponding playing field time;
and inserting a black field at the play field corresponding to the video picture.
6. The method of receiver card based video processing of claim 1, further comprising:
if the display brightness of the picture is required to be adjusted in the video playing process to be played, determining the video picture and the corresponding playing field number which are required to be adjusted in the display brightness;
and adjusting the brightness of R, B and G lamps on the LED display screen at the play field corresponding to the video picture so as to adjust the display brightness at the play field corresponding to the video picture to be a target brightness value.
7. A video processing apparatus based on a receiver card, the apparatus comprising:
the video source data acquisition module acquires video source data and shooting requirement information issued by the sending equipment;
the frequency multiplication processing module is connected with the video source data acquisition module, determines the target display frame rate of the video source data in the playing process according to shooting requirement information, and carries out frequency multiplication processing on the video source data according to the target display frame rate;
the play scene determining module is connected with the frequency multiplication processing module and is used for determining play scenes of each frame of video pictures in the video source data after frequency multiplication processing according to the refresh rate of the LED display screen;
the video to be played acquisition module is connected with the play scene determination module, and each frame of video picture and the corresponding play scene are split and recombined according to shooting requirement information and the play scene to acquire a video to be played;
the video playing module is connected with the video obtaining module to be played and plays the video to be played on the LED display screen;
the frequency multiplication processing module comprises: determining a target display frame rate of the video source data in the playing process according to the shooting demand information; if the video source data are single video source data, copying each frame of video picture at least once according to the target display frame rate; if the video source data are multiple video source data, carrying out source superposition on video pictures in each video source data;
the video acquisition module to be played comprises: determining a plurality of play orders corresponding to each frame of video picture; splitting and reorganizing each play field corresponding to all video pictures in the frequency-doubled video source data according to shooting requirement information; and obtaining the video to be played after splitting and recombining.
8. A video processing system based on a receiver card, the system comprising: transmitting device, at least one camera, a receiving card and the video processing apparatus according to claim 7;
the sending equipment is connected with the receiving card and is used for sending video source data to the receiving card and shooting requirement information generated based on the at least one camera;
the video processing device is located in the receiving card and is used for implementing the video processing method of any one of claims 1-6;
and the at least one camera is used for shooting the LED display screen corresponding to the receiving card.
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6985185B1 (en) * | 1999-08-17 | 2006-01-10 | Applied Vision Systems, Inc. | Dynamic range video camera, recording system, and recording method |
| CN102883217A (en) * | 2012-09-26 | 2013-01-16 | 华为技术有限公司 | Method and device for controlling video playing |
| CN104168466A (en) * | 2014-08-22 | 2014-11-26 | 广东威创视讯科技股份有限公司 | Multi-screen video synchronous playing method and device |
| CN108574794A (en) * | 2018-03-30 | 2018-09-25 | 京东方科技集团股份有限公司 | Image processing method, device and display equipment, computer readable storage medium |
| CN111669517A (en) * | 2020-06-19 | 2020-09-15 | 艾索信息股份有限公司 | Video overlapping method |
| WO2021046804A1 (en) * | 2019-09-10 | 2021-03-18 | 深圳市奥拓电子股份有限公司 | Method and apparatus for differently displaying rebroadcast video, and storage medium |
| WO2021082744A1 (en) * | 2019-10-31 | 2021-05-06 | 维沃移动通信有限公司 | Video viewing method and electronic apparatus |
| CN113923392A (en) * | 2021-10-15 | 2022-01-11 | 维沃移动通信有限公司 | Video recording method, video recording device and electronic equipment |
| CN113923354A (en) * | 2021-09-30 | 2022-01-11 | 卡莱特云科技股份有限公司 | Video processing method and device based on multi-frame image and virtual background shooting system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9589540B2 (en) * | 2011-12-05 | 2017-03-07 | Microsoft Technology Licensing, Llc | Adaptive control of display refresh rate based on video frame rate and power efficiency |
| CN105898342A (en) * | 2015-12-30 | 2016-08-24 | 乐视致新电子科技（天津）有限公司 | Video multipoint co-screen play method and system |
-
2022
- 2022-01-27 CN CN202210097363.6A patent/CN114302064B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6985185B1 (en) * | 1999-08-17 | 2006-01-10 | Applied Vision Systems, Inc. | Dynamic range video camera, recording system, and recording method |
| CN102883217A (en) * | 2012-09-26 | 2013-01-16 | 华为技术有限公司 | Method and device for controlling video playing |
| CN104168466A (en) * | 2014-08-22 | 2014-11-26 | 广东威创视讯科技股份有限公司 | Multi-screen video synchronous playing method and device |
| CN108574794A (en) * | 2018-03-30 | 2018-09-25 | 京东方科技集团股份有限公司 | Image processing method, device and display equipment, computer readable storage medium |
| WO2021046804A1 (en) * | 2019-09-10 | 2021-03-18 | 深圳市奥拓电子股份有限公司 | Method and apparatus for differently displaying rebroadcast video, and storage medium |
| WO2021082744A1 (en) * | 2019-10-31 | 2021-05-06 | 维沃移动通信有限公司 | Video viewing method and electronic apparatus |
| CN111669517A (en) * | 2020-06-19 | 2020-09-15 | 艾索信息股份有限公司 | Video overlapping method |
| CN113923354A (en) * | 2021-09-30 | 2022-01-11 | 卡莱特云科技股份有限公司 | Video processing method and device based on multi-frame image and virtual background shooting system |
| CN113923392A (en) * | 2021-10-15 | 2022-01-11 | 维沃移动通信有限公司 | Video recording method, video recording device and electronic equipment |
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