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Video stream conversion method

A conversion method and video streaming technology, applied in the field of video processing, can solve problems such as encoding, difficult video streaming, long processing time, etc., and achieve the effects of reducing time delay, reducing pressure, and large bandwidth

Active Publication Date: 2018-06-08
南京威翔科技有限公司
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AI Technical Summary

Problems solved by technology

[0002] In the application of high-speed video stream acquisition, we need to convert the source video stream to the subsequent encoder or image processing end, but because the front-end video stream may be a non-standard video stream, it is difficult for the encoder to accurately Video stream encoding requires corresponding resolution conversion, and high-speed video stream acquisition and video stream conversion require a long processing time

Method used

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Embodiment Construction

[0035] Such as Figure 1-Figure 4 A kind of video stream conversion method shown, comprises the steps:

[0036] Step 1: Establish a video acquisition unit, a video processing unit, and an external cache unit, and both the video acquisition unit and the external cache unit are connected to the video processing unit;

[0037] The video acquisition unit is a camera or an infrared camera, and the video processing unit is an FPGA processor;

[0038] Step 2: Establish a Cameralink receiving and processing module, an internal cache module, a video arbitration processing module and a standard format video stream sending driver module in the video processing unit;

[0039] The Cameralink receiving and processing module converts the serial data of the high-speed video stream from the infrared camera by calling the Serdes primitive of XILINX FPGA, and parses out the video stream, field synchronization and data signals according to the Cameralink standard.

[0040] Step 3: the Cameralin...

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Abstract

The invention discloses a video stream conversion method, and belongs to the technical field of video processing. The video stream conversion method comprises the following steps of establishing a video acquisition unit, a video processing unit and an external cache unit, and establishing a Cameralink receiving and processing module, an internal cache module, a video arbitration processing moduleand a standard format video stream sending drive module in the video processing unit. According to the method, the technical problem that video stream information is read and stored in an assembly line mode is solved, the parallel processing capability of an FPGA is fully played, and a design thought of the assembly line is adopted, so that the pressure of processing video data at the back end isgreatly reduced, and a certain number of software data processing time is fully reserved; the cache is directly read while being converted in a process of resolution conversion, so that the approximate real-time performance of video stream output is guaranteed, and the time delay caused by video stream caching is reduced.

Description

technical field [0001] The invention belongs to the technical field of video processing, and in particular relates to a video stream conversion method. Background technique [0002] In the application of high-speed video stream acquisition, we need to convert the source video stream to the subsequent encoder or image processing end, but because the front-end video stream may be a non-standard video stream, it is difficult for the encoder to accurately Video stream encoding requires corresponding resolution conversion, and high-speed video stream acquisition and video stream conversion require a long processing time. Contents of the invention [0003] The purpose of the present invention is to provide a video stream conversion method, which solves the technical problem of reading and storing video stream information in a pipeline manner. [0004] To achieve the above object, the present invention adopts the following technical solutions: [0005] A video stream conversion...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/01H04N21/231H04N21/234
CPCH04N7/0117H04N21/23106H04N21/234
Inventor 桑明华桂益俊顾先军
Owner 南京威翔科技有限公司
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