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Audio embedding processing and video and audio synchronous output processing method

An output processing, video and audio technology, applied in the field of video and audio processing, can solve the problems of inconsistent loudness of HD-SDI/3G-SDI embedded audio, asynchronous sound and video, etc., achieve real-time advantages, save PCB wiring area and The effect of high cost and system integration

Active Publication Date: 2022-05-27
湖南双菱电子科技有限公司
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  • Claims
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AI Technical Summary

Problems solved by technology

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a method for audio embedding processing and video and audio synchronous output processing, which solves the problems of inconsistency in loudness of embedded audio in HD-SDI / 3G-SDI and asynchronous sound and video after processing. question

Method used

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  • Audio embedding processing and video and audio synchronous output processing method
  • Audio embedding processing and video and audio synchronous output processing method
  • Audio embedding processing and video and audio synchronous output processing method

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Embodiment

[0044] Embodiment: an audio embedded processing and video and audio synchronization output processing method, such as figure 1 shown, including the following steps:

[0045] S1. Establish a video input system, a video processing system and a video output display system.

[0046] Preferably, the video input system includes a video playback card with HD-SDI and 3G-SDI interfaces for providing signal sources;

[0047] The video processing system includes an FPGA processor, a DDR memory chip and its peripheral circuits;

[0048] Video output display system including 3G-SDI monitor;

[0049] The HD-SDI and 3G-SDI interfaces of the video playback card are respectively connected to the FPGA processor for communication, and the output end of the FPGA processor is electrically or communicatively connected to the input end of the 3G-SDI monitor to display the processing effect through the 3G-SDI monitor. .

[0050] S2, input video stream data, and establish SDI_RX receiving module, ...

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Abstract

The invention discloses an audio embedding processing and video and audio synchronous output processing method, which belongs to the technical field of video and audio processing, and comprises the following steps: S1, establishing a video input system, a video processing system and a video output display system; s2, inputting video stream data, and establishing an SDIRX receiving module, an SDI de-embedding module, an audio data processing module, a video data synchronization module, an SDI embedding module and an SDITX sending module; s3, performing data processing on the video stream data; s4, carrying out de-embedding treatment; s5, storing the video data to a DDR2 chip; s6, automatically controlling the loudness of the audio data; s7, performing embedding treatment; s8, the video data and the synchronous clock are serially connected into an HD-SDI / 3G-SDI video stream; and S9, displaying the image. The problems that the loudness of the HD-SDI / 3G-SDI embedded audio is inconsistent and the processed sound and video are not synchronous are solved.

Description

technical field [0001] The present invention relates to the technical field of video and audio processing, and more particularly, to a method for audio embedded processing and video and audio synchronous output processing. Background technique [0002] In the radio and television broadcasting system, we can see various types of programs when we watch TV and movies every day. When switching between multiple channels and languages, the volume of the switching process is often inconsistent, and the video and sound are out of sync. problems, causing great distress to users. [0003] The video stream in the radio and television industry is collected from the camera and is an uncompressed high-speed serial digital interface (SDI). The hardware equipment requirements of the terminal are relatively high. The common processing method is to use a dedicated chip for HD-SDI / 3G-SDI video and audio adding and de-embedding, and then use a dedicated chip for video and audio processing, bu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/04G10L21/0356
CPCH04N5/04G10L21/0356
Inventor 周建国陈燕锴
Owner 湖南双菱电子科技有限公司
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