CN212343964U

CN212343964U - Audio and video processing equipment

Info

Publication number: CN212343964U
Application number: CN202020913365.4U
Authority: CN
Inventors: 谭文
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-05-27
Filing date: 2020-05-27
Publication date: 2021-01-12
Anticipated expiration: 2030-05-27

Abstract

The utility model discloses an audio and video processing device, which comprises an audio and video coding and decoding module and an application processor, wherein the audio and video coding and decoding module at least comprises four signal input ports for receiving video signals; the audio and video encoder module is connected with the application processor, the audio and video codec module is used for converting and decoding video signals input by the signal input port and synthesizing text pictures, synthesizing a plurality of paths of videos and outputting two paths of video signals, and the two paths of video signals input by the audio and video codec module are converted into two paths of Mipi video signals through the video conversion chip and output to the application processor. Through above-mentioned structure, the consumer can use four kinds of video equipment at least in a flexible way to carry out the shooting and the live broadcast of video content, and the application processor can show the video of Mipi of the same way at live broadcast APP, and another way of Mipi video shows at the guide APP, and further, the application processor changes the content of showing into the content of showing and imports the display screen in the video signal of eDP of the same way, switches the content of transform live broadcast APP at will.

Description

Audio and video processing equipment

Technical Field

The utility model relates to a multimedia device field, in particular to audio and video processing equipment.

Background

The audio and video processing equipment in the market can only receive video signals input by specific equipment, consumers can only use the specific shooting equipment to obtain video contents, and the consumers can not simultaneously display different shot video contents, network video contents and live APP in the same display equipment through RTMP interfaces of live broadcast platforms after processing different videos, and the videos are generated and output by sending instruction requests to other electronic equipment when the users want to switch the live broadcast video pictures, so that the video data are transmitted to the live broadcast platform server through a network.

Disclosure of Invention

In order to overcome prior art's not enough, the utility model provides an audio and video processing equipment, this equipment can receive the video signal who comes from four at least video equipment, and this equipment can be with the video signal and the synthetic output of characters picture of four at least video equipment inputs for two way video signal, video signal shows and live for living broadcast App all the way, video shows for the preview of director App all the way, so multichannel video just can show the preview simultaneously, and show two APPs with one equipment, live video content when realizing the user previewing simultaneously to multichannel video, the user can be with video and video synthesis, video and characters picture are synthetic, and on the direct broadcast App is broadcast to the director, realize the change and the director of living broadcast App content.

The utility model provides a technical scheme that its technical problem adopted is:

the utility model provides an audio and video processing device, which comprises an audio and video coding and decoding module, an application processor and a video conversion unit, wherein the audio and video coding and decoding module at least comprises four signal input ports for receiving video signals; the audio and video coding and decoding module is also provided with at least two video output units, the video output units are connected with the video conversion unit, and the video conversion unit is connected with the video output unit; the audio and video coding and decoding module is used for converting and decoding the video signals input by the signal input port and synthesizing the text pictures, and synthesizing the video signals through the video output unit and outputting two paths of video signals to the video conversion unit; the video conversion unit is used for converting the two paths of video signals output by the video output unit into two paths of Mipi signals and inputting the two paths of Mipi signals into the application processor; the application processor also comprises a video conversion chip which is used for converting the Mipi signal input from the application processor into an eDP video signal and inputting the eDP video signal to a display screen.

As an improvement of the present invention, the signal input port includes an Sdi interface, an Hdmi interface, a Usb interface, and a second Lan network interface, the Sdi interface is used to receive an Sdi audio/video signal of the first video device having Sdi output; the Hdmi interface is to receive an Hdmi audiovisual signal of a second video device having an Hdmi output; the Usb interface is used for receiving Usb audio and video signals of a third video device with Usb output; the second Lan network interface is used for receiving network audio and video signals of fourth video equipment with a Wifi function.

As the improvement of the utility model, audio and video codec module can directly decode Bt1120 signal, Usb video signal and network audio and video signal to be used for two way video output with the synthesis of multichannel video picture, export with hdmi all the way, export with Vga or Bt1120 all the way.

As an improvement of the present invention, the audio/video codec module further includes 1 to 2 Sdi to Bt1120 chips and 1 to 2 Hdmi to Bt1120 chips, the Sdi to Bt1120 chip is connected to the Sdi interface, so as to convert Sdi audio/video signals inputted from the first video device into Bt1120 signals and audio signals decodable by the audio/video codec module; the Hdmi-to-Bt 1120 chip is connected with the Hdmi interface and used for converting the Hdmi audio and video signals input from the second video equipment into Bt1120 signals and audio signals which can be decoded by the audio and video coding and decoding module.

As an improvement of the present invention, the video output unit includes an Hdmi output unit, a Bt1120 output unit, and a Vga output unit, the Hdmi output unit is used to convert one path of display picture into an Hdmi signal, and input the Hdmi signal to the video conversion unit; the Bt1120 output unit is used for converting the other path of display picture into a Bt1120 signal to be input into the video conversion unit, and the Vga output unit is used for converting the other path of display picture into a Vga signal to be input into the video conversion unit and the Bt1120 output unit.

As an improvement of the present invention, the video conversion unit comprises an Hdmi to Mipi chip connected to the Hdmi output unit, a Bt1120 to Mipi chip connected to the Bt1120 output unit, and a Vga to Mipi module connected to the Vga output unit; the Hdmi-to-Mipi chip is used for converting the Hdmi video signal output by the Hdmi output unit into a first Mipi signal; the Bt 1120-to-Mipi chip is used for converting Bt1120 video signals output by the Bt1120 output unit into second Mipi signals; the video conversion unit further comprises a Vga to Mipi module connected with the Vga output unit, the Vga to Mipi module is used for converting the Vga video signal output by the Vga output unit into a second Mipi signal, and the Vga to Mipi module comprises a Vga conversion Hdmi chip and a Hdmi conversion Mipi chip.

As the improvement of the utility model, the video conversion chip is the TC358867XBG chip for turn into the eDP video signal of the same kind with the Mipi signal of the output of application processor.

As an improvement of the utility model, the dual-frequency Wifi routing module is connected with the audio and video coding and decoding module and the application processor respectively, the dual-frequency Wifi routing module at least comprises two first Lan network interfaces, and the first Lan network interface of the dual-frequency Wifi routing module is connected with the second Lan network interface of the audio and video coding and decoding module through an RMII-LAN chip; the first Lan network interface is connected with a third Usb interface of the application processor through a Usb-to-LAN chip; the first Lan network interface is used for transmitting a network audio and video signal input from the fourth video device to the dual-frequency Wifi routing module to the audio and video coding and decoding module; the application processor can be accessed to the network of the dual-frequency Wifi routing module through a third Usb interface.

As the utility model discloses an improvement, two frequency channels of 2.4G frequency channel and 5G frequency channel are supported to dual-frenquency Wifi routing module, fourth video equipment accessible one of them arbitrary frequency channel is connected with dual-frenquency Wifi routing module to with network audio video signal input audio frequency video codec module.

As an improvement of the utility model, the audio/video coding/decoding module further comprises a first serial port connected with a second serial port of the application processor, and is used for interaction of control instructions, pictures and file data between the audio/video coding/decoding module and the application processor; the audio and video coding and decoding module further comprises a second I2S connected with the first I2S of the application processor and used for sound transmission between the audio and video coding and decoding module and the application processor.

The utility model has the advantages that: through the structure, the audio and video coding and decoding module at least comprises four signal input ports for receiving video signals, so that specific shooting equipment used by consumers is not limited, the consumers can flexibly use at least four video equipment to carry out live broadcast of video content, and the user experience is greatly improved.

Furthermore, the video encoder module is also provided with at least two video output units, the audio and video coding and decoding module is used for converting, decoding and synthesizing the video signals input by the signal input port, and at least decoding and synthesizing the video signals through the video output unit to output two paths of video signals to the video conversion unit, the APP operated by the application processor processes the two paths of Mipi video signals output by the video conversion unit, one path of video signal is displayed for a live App, one path of video is displayed for a preview of a director APP, the two APPs are simultaneously displayed, the application processor outputs one path of Mipi signal, the Mipi signal is converted into an eDP signal through the video conversion chip and inputs the eDP video signal to a display screen, a user can freely switch the director picture on the live display screen to the APP through a key peripheral, a keyboard, a touch screen, a live broadcast mouse and the like connected with the application processor without sending a request instruction to other equipment, the method is simple and convenient to operate, the speed of switching the pictures is high, and the user experience is further improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic diagram of the overall structure of a multi-channel video director and live broadcasting device;

fig. 2 is a schematic structural diagram of an audio/video encoding and decoding module;

FIG. 3 is a schematic diagram of an application processor architecture;

FIG. 4 is a schematic structural diagram of a dual-frequency Wifi routing module;

Detailed Description

Referring to fig. 1 to 4, the audio/video processing device includes an audio/video codec module 1, an application processor 2, and a video conversion unit 21, where the audio/video codec module 1 includes at least four signal input ports 11 for receiving video signals; the audio and video coding and decoding module 1 is also provided with at least two video output units 12, the video output unit 12 is connected with a video conversion unit 21, and the video conversion unit 21 is connected with the video output unit 12; the audio/video coding/decoding module 1 is used for converting and decoding the video signals input by the signal input port 11 and synthesizing the text pictures, and synthesizing the multi-channel video through the video output unit 12 and outputting two paths of video signals to the video conversion unit 21; the video conversion unit 21 is used for converting the two paths of video signals output by the video output unit 12 into two paths of Mipi (Mobile Industry Processor Interface, Chinese: Mobile Industry Processor signal) signals and inputting the signals into the application Processor 2; the application processor 2 further includes a video conversion chip 22, and the video conversion chip 22 is used to convert the Mipi signal input from the application processor 2 into an edp (embedded Display port) video signal and input the video signal to the Display screen 3.

Through the structure, the audio and video coding and decoding module 1 at least comprises the four signal input ports 11 for receiving the video signals, so that specific shooting equipment used by consumers is not limited, the consumers can flexibly use at least four video equipment to carry out live broadcast of video content, and the user experience is greatly improved.

Furthermore, the audio/video codec module 1 further has at least two video output units 12, the audio/video codec module 1 is configured to convert, decode and synthesize the video signals input from the signal input port 11, and output at least two video signals to the video conversion unit 12 through the video output unit 12, the video conversion unit 12 converts the two video signals output by the video output unit 12 into two Mipi signals and inputs the two Mipi signals to the application processor 2, the application processor 2 processes and displays the two input Mipi video signals, one video signal is displayed for the live App, one video is displayed for the director App for preview display, the two APPs are simultaneously displayed, and synthesize and output a display interface as one Mipi signal, which is converted into an eDP signal through the video conversion chip, and input the eDP video signal to the display screen 3

Furthermore, the user can use the button peripheral hardware of being connected with application processor, a keyboard, touch and mouse etc, operate the user interface on the application processor, application processor converts user's operation into the instruction and sends for audio and video codec module 1 through the serial ports, audio and video codec module 1 is according to the instruction, switch and synthesize the content on two routes video of output, reach the video content that changes live APP and the video content of direct broadcast APP, realized switching the certain picture of direct broadcast or synthetic picture on the display screen 3 to live APP at will like this, easy operation, it is convenient, it is fast to switch the picture, further improvement user experience.

In this embodiment, the signal input port 11 includes an Sdi (Serial Digital Interface, chinese: Digital component Serial) Interface 111, an Hdmi (High Definition Multimedia Interface, chinese: High Definition Multimedia) Interface 112, a Usb Interface 113, and a second Lan (Local Area Network) Network Interface 118, where the Sdi Interface 111 is configured to receive an Sdi audio/video signal of the first video device 5 with Sdi output; the Hdmi interface 112 is arranged to receive the Hdmi audiovisual signal of the second video apparatus 6 with an Hdmi output; the Usb interface 113 is configured to receive a Usb audio-video signal of the third video device 7 having a Usb output; the second Lan network interface 118 is configured to receive a network audio/video signal of the fourth video device 8 with Wifi function. Through the structure, the video signal input audio and video coding and decoding module 1 of at least four kinds of video equipment can be supported, specific video shooting equipment used by a consumer is not limited, network audio and video content can be received, the consumer can flexibly use various different video equipment to shoot the video content, and user experience is greatly improved.

The first video device 5 may be a video camera or other audio/video devices with Sdi output, the second video device 6 may be a computer or other audio/video devices with Hdmi output, the third video device 7 may be a mobile phone or other audio/video devices with Usb output, and the fourth video device 8 may be a mobile phone or other network audio/video transmission devices with Wifi function.

In this embodiment, the audio/video codec module 1 can directly decode Bt1120 (high definition television studio signal), Usb video signals and network audio/video signals, and is configured to synthesize multiple video frames into two video outputs, one of which is output by hdmi and the other is output by Vga or Bt 1120. Through the structure, the video codec 1 can directly decode the Usb signal input by the third video device 7 and the network audio/video signal input by the fourth video device 8, and the Sdi video signal input by the first video device 5 and the Hdmi video signal input by the second video device 6 need to be converted into Bt1120 signals first, so that decoding can be performed.

The audio and video coding and decoding module 1 is a Haisi 3531dv100 chip, the chip supports multi-code stream coding and decoding, the decoding efficiency is high, and the highest output code rate can reach 40 Mbps.

Furthermore, the haisi 3531dv100 chip can also be used to run a screen projection receiving program, the fourth video device 8 can be connected to a remote handset through video transmission software and receive a video signal from the remote handset, wherein the video transmission software can be a WeChat video telephone; the fourth video device 8 displays the video signal from the remote mobile phone on the screen and sends the video signal to the dual-frequency Wifi routing module 4 through Wifi; after the haisi 3531dv100 chip runs the screen projection receiving program, the video signal displayed on the screen of the fourth video device 8 can be received through the second Lan network interface 118, so as to process the video content shot by the remote mobile phone.

In this embodiment, the audio/video codec module 1 further includes 1 to 2 Sdi to

Bt1120 chips

114 and 1 to 2 Hdmi to Bt1120 chips 115, where the Sdi to Bt1120 chips 114 are connected to the Sdi interface 111, and are configured to convert Sdi audio/video signals input by the first video device 5 into Bt1120 signals and audio signals decodable by the audio/video codec module; the Hdmi to Bt1120 chip 115 is connected to the Hdmi interface 112, and is configured to convert the Hdmi audio/video signals input from the second video device 6 into Bt1120 signals and audio signals decodable by the audio/video codec module. With the above-described structure, the Sdi video signal of the first video device input 5 and the Hdmi video signal of the second video device input 6 can be converted into the Bt1120 signal and the I2S audio signal for decoding by the av codec module 1.

Specifically, the Sdi-to-Bt 1120 chip 114 is a Gs2971a chip, can convert Sdi signals into Bt1120 signals and I2S audio signals, and has error indication and correction characteristics, accurate signal conversion and high conversion efficiency; furthermore, the Hdmi-to-Bt 1120 chip 115 is an Lt8619C chip which can convert the Hdmi signal into a Bt1120 signal and an I2S audio signal, and the output signal has high resolution and good quality; further, the Vga to Mipi module (27) comprises a Vga conversion Hdmi chip ms9288 and a Hdmi conversion Mipi chip TC358743 XBG.

In this embodiment, the Video output unit 12 includes an Hdmi output unit 116, a Bt1120 output unit 117, and a Vga (Video Graphics Array, chinese: Video Graphics Array) output unit 119, wherein the Hdmi output unit 116 is configured to convert one display frame into an Hdmi signal and input the Hdmi signal to the Video conversion unit 21; the Bt1120 output unit 117 converts the other display screen into a Bt1120 signal and inputs it to the video conversion unit 21, and the Vga output unit 119 converts the other display screen into a Vga signal and inputs it to the video conversion unit 21 and the Bt1120 output unit 117. With the above configuration, the Hdmi signal output from the Hdmi output unit 116, the Bt1120 signal output from the Bt1120 output unit 117, and the Vga signal output from the Vga output unit 119 will be used as the video signal source of the video conversion unit 21.

In this embodiment, the video conversion unit 21 includes an Hdmi to Mipi chip 211 connected to the Hdmi output unit 116, a Bt1120 to Mipi chip 212 connected to the Bt1120 output unit 117, and a Vga to Mipi module 27 connected to the Vga output unit 119; the Hdmi to Mipi chip 211 is configured to convert the Hdmi video signal output by the Hdmi output unit 116 into a first Mipi signal; the Bt 1120-to-Mipi chip 212 is used for converting Bt1120 video signals output by the Bt1120 output unit 117 into second Mipi signals; the video conversion unit 21 further comprises a Vga to mimo module 27 connected to the Vga output unit 119, the Vga to mimo module 27 is configured to convert the Vga video signal output from the Vga output unit 119 into a second mimo signal, and the Vga to mimo module 27 includes a Vga to Hdmi chip and a Hdmi to mimo chip.

The model of the Hdmi-to-Mipi chip 211 is Tc358743, the highest resolution of the chip is 1920x1200, and the Hdmi video signal transmitted by the audio/video codec module 1 can be converted into a first Mipi signal with high quality; furthermore, the model of the Bt 1120-to-Mipi chip 212 is Lt8918, the transmission rate of the chip can reach 1.5Gbps, and Bt1120 video signals transmitted by the audio and video coding and decoding module 1 can be quickly converted into second Mipi signals; further, the Vga to mimo module 27 includes a Vga to Hdmi chip ms9288 and a Hdmi to mimo chip TC358743XBG, and can convert the Vga video signal transmitted from the audio/video codec module 1 into a second mimo signal for the video conversion chip 22 to multiplex or select.

In this embodiment, the video conversion chip 22 is a TC358867XBG chip 23, and is configured to convert the Mipi signal output by the application processor into an eDP video signal. Through the structure, the application processor 2 displays the live App through split screen processing while the screen runs, the first Mipi signal of the video conversion unit 21 is displayed for the live App, the director App is displayed while the screen runs, the second Mipi signal of the video conversion unit 21 is displayed for previewing the director APP, the two Apps are displayed simultaneously, the display interface is synthesized and output to be a Mipi signal, the Mipi signal is converted into an eDP signal through the TC358867XBG chip 23, and the eDP video signal is input to the display screen 3.

In this embodiment, the dual-frequency Wifi routing module 4 is connected to the audio/video codec module 1 and the application processor 2, the dual-frequency Wifi routing module 4 at least includes two first Lan network interfaces 41, and the first Lan network Interface 41 of the dual-frequency Wifi routing module 4 is connected to the second Lan network Interface 118 of the audio/video codec module 1 through a Reduced Media Independent Interface (rmii.e., a simplified Media Independent Interface) Lan chip; the first Lan network interface 41 is connected with the third Usb interface 24 of the application processor through a Usb-to-Lan chip; the first Lan network interface 41 is configured to transmit the network audio/video signal input from the fourth video device 8 to the dual-frequency Wifi routing module 4 to the audio/video codec module 1; the application processor 2 can access the network of the dual-band Wifi routing module 4 through the third Usb interface 24.

The wan (in chinese: Wide Area Network) port of the dual-frequency Wifi routing module 4 may be connected to a router with an external Network, and the audio/video codec module 1, the application processor 2, and a mobile phone connected to the Wifi routing module 4 or other devices with Wifi connection may be connected to the external Network through the Wifi routing module 4.

Specifically, the application processor 2 is externally connected with a 5G network module 26, has the internet access functions of 4G and 5G, and can open the 5G network module 26 to enable internet access through the 5G network module 26 when the 5G network is required to be used.

Further, the application processor 2 is an Android 4G module, supports mobile, connected and telecom 4G high-speed access, and also supports mobile, connected and 3G, mobile and connected 2G networks, and can provide high-speed wireless data, internet access and other services for users, and users can access to an external network through the Android 4G module; further, the external 5G network module 26 allows the device to access the 5G network for faster transmission of video network data.

In this embodiment, the dual-frequency Wifi routing module 4 supports two frequency bands, namely, a 2.4G (low frequency, low transmission bandwidth Wifi frequency band) frequency band 42 and a 5G (high frequency, high transmission bandwidth Wifi frequency band) frequency band 43, and the fourth video device 8 can be connected to the dual-frequency Wifi routing module 4 through any one of the frequency bands and input the network audio/video signal to the audio/video codec module 1. Through the structure, because the dual-frequency Wifi routing module 4 supports the 2.4G frequency band 42 and the 5G frequency band 43, a specific Wifi frequency band is not limited, and a consumer can freely select one Wifi frequency band to access according to requirements, the convenience is further brought to the user, and the use experience of the user is improved.

In this embodiment, the audio/video codec module 1 further includes a first serial port 13 connected to the second serial port 25 of the application processor 2, for interaction of control instructions, pictures and file data between the audio/video codec module 1 and the application processor 2; the audio/video codec module 1 further includes a second I2S connected to a first I2S (integrated circuit built-in audio bus) of the application processor 2, for transmitting sound between the audio/video codec module 1 and the application processor 2.

Through the structure, when a user uses a key peripheral, a keyboard, a touch, a mouse and the like connected with an application processor to operate a user interface on the application processor, the application processor 2 converts the operation of the user into an instruction and sends the instruction to the audio and video coding and decoding module 1 through a serial port, the audio and video coding and decoding module 1 switches and synthesizes and outputs contents on two paths of videos according to the instruction, so that the live broadcast video contents of live broadcast APP and the preview video contents of the live broadcast APP are changed, thus realizing the purpose of randomly switching a certain picture or a synthesized picture of the live broadcast APP on a display screen 3 to the live broadcast APP, and the serial port can also be used for the interaction of pictures and file data between the audio and video coding and decoding module 1 and the application; the audio and video codec module 1 further includes a second I2S connected to the first I2S of the application processor 2 for sound transmission between the audio and video codec module 1 and the application processor 2.

The foregoing is illustrative of one or more embodiments provided in connection with the detailed description and is not intended to limit the invention to the specific embodiments disclosed herein. Similar or identical methods, structures and the like as those of the present invention or several technical deductions or substitutions made on the premise of the conception of the present invention should be considered as the protection scope of the present invention.

Claims

1. The audio and video processing equipment is characterized by comprising an audio and video coding and decoding module (1), an application processor (2) and a video conversion unit (21), wherein the audio and video coding and decoding module (1) at least comprises four signal input ports (11) for receiving video signals; the audio and video coding and decoding module (1) is also provided with at least two video output units (12), the video output units (12) are connected with the video conversion unit (21), and the video conversion unit (21) is connected with the video output unit (12); the audio and video coding and decoding module (1) is used for converting and decoding the video signals input by the signal input port (11) and synthesizing the text pictures, and synthesizing the video signals through the video output unit (12) and outputting two paths of video signals to the video conversion unit (21); the video conversion unit (21) is used for converting the two paths of video signals output by the video output unit (12) into two paths of Mipi signals and inputting the two paths of Mipi signals into the application processor (2); the application processor (2) further comprises a video conversion chip (22), and the video conversion chip (22) is used for converting a Mipi signal input from the application processor (2) into an eDP video signal and inputting the eDP video signal to a display screen (3).

2. The audiovisual processing device according to claim 1, characterized in that the signal input port (11) comprises an Sdi interface (111), an Hdmi interface (112), a Usb interface (113) and a second Lan network interface (118), the Sdi interface (111) being configured to receive an Sdi audiovisual signal of the first video device (5) with Sdi output; the Hdmi interface (112) is arranged to receive Hdmi audiovisual signals of a second video apparatus (6) having an Hdmi output; the Usb interface (113) is configured to receive a Usb audio-video signal of a third video device (7) having a Usb output; the second Lan network interface (118) is used for receiving network audio and video signals of a fourth video device (8) with a Wifi function.

3. The audio-video processing device according to claim 1, wherein the audio-video codec module (1) is capable of directly decoding Bt1120 signals, Usb video signals and network audio-video signals, and is configured to synthesize multiple video pictures into two video outputs, one for hdmi output and one for Vga or Bt1120 output.

4. The audio-video processing device according to claim 2, wherein the audio-video codec module (1) further comprises 1 to 2 Sdi to Bt1120 chips (114) and 1 to 2 Hdmi to Bt1120 chips (115), and the Sdi to Bt1120 chips (114) are connected to the Sdi interface (111) for converting Sdi audio-video signals input by the first video device (5) into Bt1120 signals and audio signals decodable by the audio-video codec module; the Hdmi to Bt1120 chip (115) is connected with the Hdmi interface (112) and is used for converting the Hdmi audio and video signals input from the second video device (6) into Bt1120 signals and audio signals which can be decoded by an audio and video coding and decoding module.

5. The av processing device according to claim 1, wherein said video output unit (12) comprises an Hdmi output unit (116), a Bt1120 output unit (117), a Vga output unit (119), said Hdmi output unit (116) is configured to convert one display picture into an Hdmi signal and input the Hdmi signal to said video conversion unit (21); the Bt1120 output unit (117) is used for converting the other display picture into a Bt1120 signal and inputting the Bt1120 signal into the video conversion unit (21), and the Vga output unit (119) is used for converting the other display picture into a Vga signal and inputting the Vga signal into the video conversion unit (21) and the Bt1120 output unit (117).

6. The audio-video processing device according to claim 5, characterized in that said video conversion unit (21) comprises an Hdmi to Mipi chip (211) connected to said Hdmi output unit (116), a Bt1120 to Mipi chip (212) connected to said Bt1120 output unit (117), and a Vga to Mipi module (27) connected to said Vga output unit (119); the Hdmi-to-Mipi chip (211) is used for converting the Hdmi video signal output by the Hdmi output unit (116) into a first Mipi signal; the Bt 1120-to-Mipi chip (212) is used for converting Bt1120 video signals output by the Bt1120 output unit (117) into second Mipi signals; the video conversion unit (21) further comprises a Vga to-Mipi module (27) connected to the Vga output unit (119), the Vga to-Mipi module (27) is configured to convert the Vga video signal output by the Vga output unit (119) into a second Mipi signal, and the Vga to-Mipi module (27) includes a Vga to-Hdmi chip and an Hdmi to-Mipi chip.

7. The audio-video processing device according to claim 1, wherein the video conversion chip (22) is a TC358867XBG chip (23) for converting a Mipi signal outputted from the application processor into a single eDP video signal.

8. The audio and video processing device according to claim 2, further comprising a dual-frequency Wifi routing module (4) connected to the audio and video codec module (1) and the application processor (2), respectively, wherein the dual-frequency Wifi routing module (4) comprises at least two first Lan network interfaces (41), and the first Lan network interface (41) of the dual-frequency Wifi routing module (4) is connected to a second Lan network interface (118) of the audio and video codec module (1) through an RMII-to-Lan chip; the first Lan network interface (41) is connected with a third Usb interface (24) of the application processor through a Usb-to-LAN chip; the first Lan network interface (41) is used for transmitting network audio and video signals input to the dual-frequency Wifi routing module (4) from the fourth video device (8) to the audio and video coding and decoding module (1); the application processor (2) can be accessed to the network of the dual-frequency Wifi routing module (4) through a third Usb interface (24).

9. The audio/video processing device according to claim 8, wherein the dual-frequency Wifi routing module (4) supports two frequency bands, namely a 2.4G frequency band (42) and a 5G frequency band (43), and the fourth video device (8) can be connected with the dual-frequency Wifi routing module (4) through any one of the frequency bands and inputs the network audio/video signals to the audio/video codec module (1).

10. The audio-video processing device according to claim 1, wherein the audio-video codec module (1) further comprises a first serial port (13) connected to the second serial port (25) of the application processor (2) for interaction of control commands, pictures and file data between the audio-video codec module (1) and the application processor (2); the audio and video coding and decoding module (1) further comprises a second I2S (14) connected with the first I2S (28) of the application processor (2) and used for sound transmission between the audio and video coding and decoding module (1) and the application processor (2).