CN118158344A - Audio-visual system for sharing image processing program and video processing method thereof - Google Patents

Abstract

An audio-visual system and its video processing method for sharing image processing program, in which the audio-visual system executes an image processing program for optimizing image for a video of a specific format, when the video format input into the audio-visual system is different from the format supported by the image processing technique in the audio-visual system, the video format can be converted by a video conversion program, so that the image processing program in the audio-visual system can be shared by the videos of different formats. In the video processing method, a second format video is received first, then a first format conversion is executed, the second format video is converted into a first format video supported by an image processing program executed in an audio-visual system, so as to execute image processing on the first format video, and then whether to execute format conversion again is determined according to a video format supported by a display device at an output end.

Description

Audio-visual system for sharing image processing program and video processing method thereof

Technical Field

The present invention relates to a video processing technology, in particular to an audio-visual system providing a shared image processing program for videos in different formats and a video processing method including video format conversion.

Background technique

In existing image processing devices, for input images, corresponding image processing procedures are performed according to the format of the image. The input video format can be a high dynamic range (HDR) format video or a standard dynamic range (SDR) format video, and corresponding analysis and image quality processing procedures need to be provided for videos of different formats.

Referring to the schematic diagram of the prior art video processing technology shown in FIG1 , in a video processing circuit, the input video 10 may be a high dynamic range (HDR) video or a standard dynamic range (SDR) video. Because the high dynamic range and standard dynamic range images have different characteristics in terms of brightness and color gamut, and also have different encodings, generally speaking, high dynamic range images can provide a richer color range than standard dynamic range images, and can present more details in the image. Therefore, different image processing programs, especially different image processing parameters, are required for the two formats of video images.

FIG1 shows a video processing circuit or process for one video format, and cannot be applied to both HDR and SDR formats. When a video 10 is input into the video processing circuit, an analyzer 100 first analyzes the image features in the video using a statistical method, such as obtaining the high and low frequency components of the image, the distribution of statistical brightness, the image saturation and hue, etc., and then a first image processing unit 101 and a second image processing unit 102 with different processing parameters are used to perform image processing, such as noise reduction and sharpness, etc. to enhance the image processing.

In the prior art, various image processing parameters need to be modulated individually for video images of different formats. That is, in terms of circuit design, for two video formats such as HDR and SDR, two sets of video processing circuits or processes as shown in FIG. 1 are required because different processing parameters are required.

Summary of the invention

The present invention relates to an audio-visual system and a video processing method that can share image processing programs for videos of different formats. By sharing the image processing program, there is no need to provide additional corresponding processing programs for video formats not supported by the video processing program in the audio-visual system.

According to an embodiment of the present invention, the video processing method is executed in the proposed audio-visual system that shares an image processing program. When the audio-visual system receives a second format video, such as an HDR video, from an audio-visual source, because it is different from a first format video supported by the image processing program in the audio-visual system, such as an SDR video, a first format conversion is performed to convert the second format video into a first format video supported by the image processing program executed in the audio-visual system, so as to perform image processing on the first format video, and then output the first format video after image processing.

Furthermore, the processing parameters in the image processing program executed by the audio-visual system are modulated for the first format video image, and are used to optimize the video image output to the terminal display device. After the image processing of the first format video is completed, if the terminal display device connected to the output end of the audio-visual system supports displaying the second format video, it is also necessary to convert the second format to generate the second format video output to the terminal display device.

Furthermore, the first format conversion procedure includes first converting the received second format video frame by frame from the first color space to the second color space, then executing an electro-optical conversion procedure on the video image in the second color space to convert the digital video signal into a visible light signal, then executing a video format conversion to convert the second format video in the second color space into the first format video, and then executing a photoelectric conversion procedure on the first format video to perform gamma correction, and finally converting the gamma-corrected first format video frame by frame from the second color space to the first color space, and then outputting it to the image processing procedure in the audio-visual system for processing.

Furthermore, the image processing program for optimizing the image executed in the audio-visual system includes first analyzing the image features of the first format video by statistical methods, and then performing one or more image processing on the first format video, including one or more processing of noise reduction, image sharpening, saturation adjustment, contrast and hue adjustment.

To further understand the features and technical contents of the present invention, please refer to the following detailed description and drawings of the present invention. However, the drawings provided are only for reference and description and are not intended to limit the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 shows a schematic diagram of an existing video processing technology;

FIG2 shows an application example of an audio-visual system;

FIG3 is a schematic diagram showing an embodiment of an image processing unit in an audio-visual system;

FIG4 shows a schematic diagram of an embodiment of an audio-visual system;

FIG5 shows another schematic diagram of an embodiment of an audio-visual system;

FIG6 shows an embodiment of a diagram of various stage units for performing video format conversion in an audio-visual system;

FIG7 shows another embodiment of a unit for performing video format conversion at each stage in an audio-visual system;

FIG8 shows a schematic diagram of color gamuts with different widths;

FIG9 shows an example of a perceptual quantization curve used in an electro-optical conversion function;

FIG. 10 shows an example of a perceptual quantization curve used by a photoelectric conversion function; and

FIG. 11 shows a flow chart of an embodiment of a video processing method.

Description of reference numerals:

10: Video 100: Analysis unit 101: First image processing unit

102: second image processing unit 20: video 200: audio-visual processing device

202: terminal display device 30: image processing unit 301: first format video

310: analysis unit 311: first image processing unit 312: second image processing unit

313: output video 401: second format video 400: format conversion unit

402: first format video 501: second format video 511: first format conversion unit

512: second format conversion unit 502: second format video 61: HDR video

601: first color space conversion unit 602: electro-optical conversion unit 603: color gamut conversion matrix

604: Photoelectric conversion unit 605: Second color space conversion unit 62: SDR video

71: SDR video 701: First color space conversion unit 702: Electro-optical conversion unit

703: Color gamut conversion matrix 704: Photoelectric conversion unit 705: Second color space conversion unit

72: HDR Video

Steps S111 to S121: Video processing method flow

Detailed ways

The following will illustrate the embodiments of the present disclosure with reference to the accompanying drawings. In the accompanying drawings, the same reference numerals represent the same or similar elements or method flows.

The following is an explanation of the embodiments of the present invention through specific embodiments. Those skilled in the art can understand the advantages and effects of the present invention from the contents disclosed in this specification. The present invention can be implemented or applied through other different specific embodiments, and the details in this specification can also be modified and changed in various ways based on different viewpoints and applications without departing from the concept of the present invention. In addition, the drawings of the present invention are only simple schematic illustrations and are not depicted according to actual sizes. It is stated in advance. The following embodiments will further explain the relevant technical contents of the present invention in detail, but the disclosed contents are not intended to limit the scope of protection of the present invention.

It should be understood that, although the terms "first", "second", "third", etc. may be used herein to describe various components or signals, these components or signals should not be limited by these terms. These terms are mainly used to distinguish one component from another component, or one signal from another signal. In addition, the term "or" used herein may include any one or more combinations of the associated listed items depending on the actual situation.

In view of the fact that the prior art needs to provide corresponding video processing circuits or processes for videos of different formats, the present specification proposes an audio-visual system and a video processing method thereof that share an image processing program, wherein the audio-visual system refers to a circuit system, a system or a device in which software and circuits work together to process videos and output videos of a specific format. In the executed video processing method, through the preliminary work of video conversion, the back-end image processing solution (including software methods or hardware) can be applicable to video images of different formats, such as high dynamic range (HDR) video and standard dynamic range (SDR) video; the actual product of the audio-visual system can be a system on chip (SoC), an embedded television system or software or circuits in any audio-visual processing device, and the audio-visual processing device implemented by the audio-visual system can be internally installed in a display device such as a television, or a device external to a display device.

The various image processing parameters used in the image processing program in the audio-visual system are adapted to support a specific video format, such as the SDR mentioned above, and are not applicable to HDR. However, through the format conversion method in the audio-visual system, the image processing program therein can be adapted to HDR video, thereby achieving the purpose of sharing the image processing program.

The application of the audio-visual system can refer to the embodiment diagram shown in FIG2 , which shows that the audio-visual system is provided in the audio-visual processing device 200, provides a video sharing image processing program in multiple formats, and the output end is connected to the display terminal display device 202, which can be a television or any display, wherein the display function can support high dynamic range (HDR) video or standard dynamic range (SDR) video, and the terminal display device 202 is externally connected to the audio-visual processing device 200, and the audio-visual processing device 200 is provided with an audio-visual system that provides a video sharing image processing program in multiple formats, and the audio-visual system can also be built in the terminal display device 202. After the audio-visual processing device 200 receives the video 20, the video processing method is run through the audio-visual system therein, and when a video format that is not supported by the image processing program in the audio-visual system is detected, the format of the video 20 is converted into a video format supported by the image processing program in the audio-visual processing device 200, without the need to additionally process videos of different formats, and then, if necessary, it can be converted into a video format supported by the terminal display device 202.

Next, Figure 3 shows a schematic diagram of an embodiment of an image processing unit in an audio-visual system. The figure shows an image processing unit 30 for the video image part in the audio-visual system, while the audio part of the audio-visual system can be processed by another processing unit, which will not be repeated here.

The audio-visual system provides a variety of image processing tools for optimizing video images. This embodiment shows that the image processing unit 30 receives a first format video 301. During development, relevant image processing parameters have been set for the first format video. This embodiment is represented by a first image processing unit 311 and a second image processing unit 312. Relevant image processing tools include (but are not limited to) noise reduction, image sharpness, saturation adjustment, contrast and hue adjustment, etc. The image processing flow may include one or more of these processes.

During operation, when the image processing unit 30 receives the first format video 301, the image features of the first format video 301 can be first analyzed by the analysis unit 310 using a statistical method, and the features of the items related to the image processing tool in the image processing unit 30 can be obtained, such as the high and low frequency components of the image, the distribution of brightness, the image saturation, the color expression and hue, etc. After being provided to the first image processing unit 311 and the second image processing unit 312, the output video 313 supported by the output terminal display device is output.

The audio-visual system implemented using the above-mentioned image processing unit 30 can be seen in the embodiment schematic diagrams shown in Figures 4 and 5. Since the image processing unit 30 has only adjusted parameters for video of one format, in the audio-visual system, it is necessary to decide whether to perform format conversion based on the input video format, so that the image processing tools in the audio-visual system can be applied to videos of multiple formats through this video format conversion mechanism.

The audio-visual system can be implemented with a processor, a memory and related image processing software or firmware, including an image processing unit 30, which is used to process various image processing tools of a video in a specific format (herein referred to as a first format video), wherein processing parameters for enhancing the first format video are applied. When receiving a second format video 401 different from the first format video, it is first converted into the first format video by the format conversion unit 400 before being delivered to the image processing unit 30 for processing. If the terminal display device connected to the audio-visual system supports the first format video, the first format video 402 after image processing is directly output.

According to the embodiment, before the audiovisual system processes the video with the image processing unit 30, it can first obtain the image features of the second format video 401, including information such as color and hue, by statistical methods through analysis means (such as the analysis unit 310 in Figure 3), so that the image processing unit 30 can perform image processing on the input video image features and then output the first format video 402.

For example, the image processing unit 30 is a circuit or software for image processing of standard dynamic range (SDR) video (first format video). When the audio-visual system receives high dynamic range (HDR) video (second format video), the format conversion unit 400 is required to convert the high dynamic range video into a standard dynamic range video to facilitate the operation of the image processing unit 30, realize the shared audio-visual processing program, and then output the standard dynamic range video (first format video) after image processing. Similarly, another example is that the image processing unit 30 supports HDR video. If the input video is an SDR video, the format conversion unit 400 needs to convert the SDR video into an HDR video, and then decide whether to perform another format conversion depending on the format supported by the terminal display device.

According to another embodiment, if the terminal display device of the audio-visual system supports the second format video, the video after image processing needs to undergo a format conversion. The embodiment is shown in FIG. 5 . When the audio-visual system receives the second format video 501, the image features can be analyzed first, and then the second format video 501 is converted into the first format video suitable for the image processing unit 30 through the first format conversion unit 511. The image processing unit 30 performs image processing on the image features of the converted first format video to generate the first format video after image processing. However, when the terminal display device supports the second format video, the second format video 502 is converted and output through the second format conversion unit 512.

For example, the processing parameters in the image processing unit 30 in the audio-visual system are for SDR video image modulation. Therefore, when the input video is HDR video, the first format conversion unit 511 is required to convert the input HDR video into SDR video. After image processing, a second format conversion can be performed for the video format (such as HDR) supported by the terminal display device at the output end after processing by the audio-visual system, that is, the high dynamic range video is converted and output through the second format conversion unit 512.

Thus, according to the present specification, a video processing method is proposed, in which whether to perform format conversion will be determined based on the input video format, so that the processing circuit can be applicable to multiple video formats, wherein the format conversion process will perform video conversion through circuits, software or firmware methods, wherein the video detection and conversion circuits, software or their collaboration form an audio-visual system.

Figure 6 shows an embodiment diagram of each stage unit of the audio-visual system performing format conversion, which shows the processing flow of converting HDR video 61 to SDR video 62. Each stage unit can be implemented by circuits, software or firmware, wherein the first color space conversion unit 601, the color gamut conversion matrix 603 and the second color space conversion unit 605 process the color part, and the electro-optical conversion unit 602 and the photoelectric conversion unit 604 process the brightness part.

For example, the image of the input video of this application is in the color space of the YUV (or YCrCb) encoding system (where Y represents grayscale and brightness, UV represents chroma, YUV-encoded video is suitable for transmission, and should eventually be converted into RGB-encoded video for display), and can be an ultra-high-resolution ITU BT.2020 video specification with a wide color gamut, which defines resolution, frame rate, bit depth, color representation, etc., as shown in Figure 8, which shows a schematic diagram of color gamuts of different widths, which indicates the color gamut ranges covered by the two video specifications of ITUBT.2020 and BT.709.

Initially, the audio-visual system receives a second format video from an audio-visual source, such as an audio-visual streaming platform or any external electronic device. The audio-visual source provides a video in a specific format, such as the HDR video 61 in this embodiment. The HDR video 61 can be first encoded in a color space format that is convenient for transmission, such as YUV, where "Y" represents brightness, and "U" and "V" represent chrominance and saturation.

In this process example, the first color space conversion unit 601 performs color space conversion to convert the HDR video 61 in the first color space (such as YUV color space) into the second color space (such as RGB (red, green and blue) color space) frame by frame. One of the conversion methods can be implemented according to the following conversion formula 1, but the actual operation is not limited to this. In this example, [R, G, B] represents the red, green and blue channel values of the RGB color space.

[Y, U, V] are the component values of the YUV color space, and M1 is the transfer matrix.

Conversion formula 1:

[R,G,B] ^T = M1[Y,U,V] ^T ;

in

The video image converted to the second color space (RGB color space in this embodiment) is then converted into a visible light signal for display by an electro-optical transfer function (EOTF, 2084 EOTF may be used) 602. The electro-optical transfer function used in the electro-optical conversion process uses a perceptual quantizer (PQ) curve, as shown in FIG9 . The coded digital signal can be quantized into 10-bit coded information by channel (red (R), green (G), blue (B)) through the perceptual quantization curve. Each quantized value is compared with the perceptual quantization curve to convert the digital coded information into a brightness range based on the characteristics of the human eye, that is, the brightness values of the red, green and blue channels are obtained by mapping the perceptual quantization curve. The maximum brightness displayed in this embodiment is 10,000 nits (cd/m ² ).

Then, the color gamut conversion is performed using a color gamut conversion matrix 603. For example, the conversion from the HDR video format in the second color space to the SDR video is performed, and the video specification of the ITU BT.2020 covering a wide color gamut is converted to the ITU BT.709 with a narrower color gamut range, corresponding to the high-resolution SDR video. The BT.2020 color gamut can be mapped to the BT.709 color gamut through the following 3x3 conversion matrix, wherein the color gamut conversion formula and the conversion matrix example are as follows:

When the video image is converted to a high-resolution video of the BT.709 specification, an optical-electro transfer function (OETF) 604 is used to perform an optical-electro transfer process. Based on the fact that the human eye is more sensitive to details in dark areas, the information of each color channel of the video image in the second color space (the RGB color space in this embodiment) is optically converted, and the brightness performance under the BT.709 video specification is made close to the Gamma 0.45 curve under gamma correction, that is, the brightness performance is more suitable for the human eye.

Finally, the second color space conversion unit 605 performs color space conversion again, and converts the video that has been gamma-corrected and is in the second color space (the RGB color space in this embodiment) back to the first color space (the YUV color space in this embodiment) frame by frame. In this embodiment, relative to the method of converting from YUV to RGB color space, one of the conversion methods can be implemented according to the following conversion formula 2, but the actual operation is not limited to this. In this example, [R, G, B] represents the red, green and blue channel values of the RGB color space, [Y, U, V] is the component values of the YUV color space, and M2 is a transfer matrix.

Conversion formula 2:

[Y,U,V] ^T =M2[R,G,B] ^T ;

in

Finally, the HDR video 61 is converted into an SDR video 62 under the BT.709 specification through the above format conversion program, completing the purpose of the audio-visual system performing format conversion, and then output to the image processing program for image processing.

According to the technical concept of the video processing method proposed in the specification, when the received video format is not a video format supported by the image processing in the audio-visual system, format conversion will be performed, as shown in FIG6 , where an HDR video 61 is converted into an SDR video 62. After image processing in the audio-visual system, another format conversion may be required for the video format supported by the display device at the output end, as shown in FIG7 , which is an implementation diagram of converting an SDR video into an HDR video.

FIG7 shows another embodiment of each stage unit of the audio-visual system performing format conversion, which shows the process of converting an SDR video 71 to an HDR video 72. Similarly, each stage unit can be implemented by circuits, software or firmware. In this embodiment, the audio-visual system receives a first format video (such as the SDR video 71 of this embodiment) in a first color space (the YUV color space in this embodiment). The SDR video 71 can preferably be the ITU BT.709 video specification, and its color gamut (colorgamut) can be seen in the schematic diagram shown in FIG8, which shows that the SDR video 71 adopts the BT.709 video specification covering a relatively narrow color gamut. After being processed by the audio-visual system, it can be converted into a second format video (such as the HDR video of this embodiment) 72. The HDR video 72 of this embodiment adopts the BT.2020 video specification covering a wider color gamut.

In the audio-visual system, the SDR video 71 in the YUV color space is first converted frame by frame into the RGB color space by the first color space conversion unit 701. One of the conversion methods can be implemented according to the following conversion formula 3, but the actual operation is not limited to this. In this example, [R, G, B] represents the red, green and blue channel values of the RGB color space.

[Y,U,V] are the component values of the YUV color space, and M3 is the conversion matrix.

Conversion formula three:

[R,G,B] ^T = M3[Y,U,V] ^T ;

in

The video image converted to the RGB color space is then converted into a visible light signal for display through an electro-optical conversion unit (EOTF, which may use gamma2.2) 702. Because SDR video images inevitably lose details that are too bright or too dark in the image, the information of each color channel of the video image in the RGB color space is corrected through the gamma curve through the electro-optical conversion function, so that the brightness performance of the BT.709 video specification approaches the Gamma2.2 curve.

Then, the BT.709 video is converted to the BT.2020 video with a wider color gamut by using the color gamut conversion matrix 703, so as to meet the demand of outputting HDR video. In the embodiment, the BT.709 video specification is mapped to the BT.2020 video specification suitable for the terminal display device through the following 3x3 conversion matrix. The color gamut conversion formula is as follows:

When the video image is converted to an ultra-high resolution video of the BT.2020 specification, the information of each color channel of the video image in the RGB color space is photoelectrically converted by the photoelectric conversion unit (OETF, 2084OETF can be used) 704, so that the SDR video image can be mapped to the brightness of the HDR video suitable for the terminal display device through the perceptual quantization curve (PQ curve) as shown in Figure 10. Finally, the second color space conversion unit 705 performs color space conversion again to convert the video in the RGB color space back to the YUV color space frame by frame. One of the conversion methods can be implemented according to the following conversion formula 4, but the actual operation is not limited to this. This example shows that [R, G, B] (red, green and blue channel values) are converted to [Y, U, V] (values of each component of the YUV color space) through the conversion matrix M4.

Conversion formula 4:

[Y,U,V] ^T =M4[R,G,B] ^T ;

in

Finally, the purpose of converting the SDR video 71 into the HDR video 72 under the BT.2020 specification is achieved through the above format conversion procedure.

This specification proposes an audio-visual system implemented by a single chip, firmware, or software or circuit in an embedded television system or any video conversion device, in which the video conversion technology shown in Figures 4 to 7 above is used. The overall process can be seen in the video processing method embodiment flow chart shown in Figure 11.

The image processing technology used to enhance the display image in the audio-visual system shown in this embodiment supports a specific video format (this process is called the first format). Therefore, at the beginning of operation, when audio-visual data is received, the format of the input video is detected (step S111), and it is determined whether it is consistent with the processing format (first format) in the system (step S113). If the input is a video in the first format, it means that it is consistent with the processing format in the system (yes), that is, image processing is performed directly (step S117), and the video can be output in the same format (step S121).

On the contrary, when the video format input to the audio-visual system is the second format, which is different from the processing format (first format) in the system (no), the first format conversion (step S115) will be performed to convert the second format video into the first format video. As described in the embodiments of Figures 4 and 5 above, the video format conversion needs to be performed first. The embodiment of this first format conversion can refer to the multiple processing procedures shown in Figure 6. The main format conversion procedures include the steps of first color space conversion, electro-optical conversion, video specification conversion, photoelectric conversion, and second color space conversion. Then, the video converted to the first format is image processed (step S117), and the first format video after image processing can be output (step S121).

If the terminal display device in the audio-visual system supports displaying the second format video, after the image processing, it is necessary to perform a second format conversion (step S119) to convert the first format video into the second format video, and then output the second format video (step S121).

In the above embodiment, the image processing format supported by the audiovisual system is the first format, such as SDR. When the input video is in the second format, such as HDR, it needs to be converted to SDR video before image processing. Finally, it is determined whether to convert to HDR video output according to the video format supported by the display device. In this way, the same image processing circuit or software can be used in the audiovisual system, including the same processing parameters, without providing additional image processing solutions for specific formats.

In summary, according to the audio-visual system and video processing method of the shared image processing program described in the above embodiments, through video format conversion, the relevant system only needs to provide one image processing circuit or software to support multiple video formats. Especially because in the change of video formats, most image processing technologies propose image processing solutions for standard dynamic range (SDR) videos. When high dynamic range (HDR) format videos are proposed, the video processing method proposed in this specification can make high dynamic range videos also applicable to the image processing solutions used by the audio-visual system for standard dynamic range videos. When developing audio-visual systems, existing technical solutions can be used without increasing the cost of additional parameter adjustments or circuits.

The contents disclosed above are only preferred embodiments of the present invention and are not intended to limit the present invention. Therefore, all equivalent technical changes made according to the present invention are included in the patent protection scope of the present invention.

Claims (10)

1. A video processing method, characterized in that it is applied in an audio-visual system, comprising: receiving a video in a second format; Performing a first format conversion to convert the second format video into a first format video supported by an image processing program executed in the audio-visual system, so as to perform image processing on the first format video; and Output the first format video after image processing. 2. The video processing method according to claim 1 is characterized in that the processing parameters in the image processing program executed by the audio-visual system are modulated for the first format video image, and are used to optimize the video image output to a terminal display device. 3. The video processing method according to claim 2 is characterized in that when the terminal display device connected to the output end of the audio-visual system supports displaying the second format video, the first format video after image processing is converted into the second format video for output to the terminal display device through the second format. 4. The video processing method according to claim 3 is characterized in that the first format video supported by the image processing program executed in the audio-visual system is a standard dynamic range video, and the second format video is a high dynamic range video. 5. The video processing method according to any one of claims 1 to 4, characterized in that the first format conversion procedure comprises: Converting the received second format video frame by frame from a first color space to a second color space; Performing an electro-optical conversion process on the video image in the second color space to convert the digital video signal into a visible light signal; Performing color gamut conversion to convert the second format color gamut in the second color space into the first format color gamut; Performing a photoelectric conversion process on the first format video in the second color space to perform gamma correction; and The gamma-corrected first format video is converted frame by frame from the second color space to the first color space, and then output to the image processing program. 6 . The video processing method according to claim 5 , wherein the first color space is a YUV color space, and the second color space is an RGB color space. 7. The video processing method according to claim 5, characterized in that the image processing program comprises: Analyzing the image features of the first format video using a statistical method; and One or more image processing is performed on the first format video, including one or more processing of noise reduction, image sharpening, saturation adjustment, contrast and hue adjustment. 8. An audio-visual system for sharing an image processing program, characterized in that a video processing method is executed, the video processing method comprising: Receiving a second format video from an audio-visual source; Performing a first format conversion to convert the second format video into a first format video supported by an image processing program executed in the audio-visual system, so as to perform image processing on the first format video; and Output the first format video after image processing. 9. The audio-visual system for sharing an image processing program according to claim 8 is characterized in that the processing parameters in the image processing program executed by the audio-visual system are modulated for the first format video image, so as to optimize the video image output to a terminal display device; when the terminal display device connected to the output end of the audio-visual system supports displaying the second format video, the first format video after image processing is converted into the second format video for output to the terminal display device through the second format. 10. The audio-visual system for sharing an image processing program according to claim 8 or 9, wherein the first format conversion program in the video processing method comprises: Converting the received second format video frame by frame from a first color space to a second color space; Performing an electro-optical conversion process on the video image in the second color space to convert the digital video signal into a visible light signal; Performing color gamut conversion to convert the second format color gamut in the second color space into the first format color gamut; Performing a photoelectric conversion process on the first format video in the second color space to perform gamma correction; and The gamma-corrected first format video is converted frame by frame from the second color space to the first color space, and then output to the image processing program.