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H.264 video codec method based on jetsontx1 platform

A video codec and platform technology, applied in the direction of digital video signal modification, image communication, electrical components, etc., can solve problems such as imperfect design, large transmission delay, serious frame loss, etc., and achieve real-time processing and reduce delay time Effect

Active Publication Date: 2020-10-09
BEIJING HUAHANG RADIO MEASUREMENT & RES INST
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Problems solved by technology

[0004] 1) Due to the large amount of video data and the limitation of transmission bandwidth, the direct transmission of the original image cannot meet the real-time requirements, the transmission delay is large, and the frame loss is serious;
[0005] 2) JetsonTX1's X264 and FFMPEG two classic development libraries, the design of encoding and decoding acceleration for GPU is not perfect. First, they do not support the underlying hardware driver of the GPU. Second, the programs developed based on the classic development library are difficult to meet real-time performance. Require

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  • H.264 video codec method based on jetsontx1 platform

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Embodiment Construction

[0048] Preferred embodiments of the present invention will be specifically described below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the application and are used together with the embodiments of the present invention to explain the principle of the present invention.

[0049] A specific embodiment of the present invention discloses a H.264 video codec method based on the JetsonTX1 platform; figure 1 shown, including the following steps:

[0050] Step S1, acquiring an input video stream through video capture, and preprocessing the acquired video stream;

[0051] Step S101, obtaining input video stream data, and providing a video source for video encoding;

[0052] The video stream is obtained through video capture, the frame rate of the video stream is 30 frames per second, the video resolution includes 640x480, 1280x720 and 1920x1080, and there is no special requirement for the video format; during video capture, the...

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Abstract

The invention relates to an H.264 video coding and decoding method and device based on a JetsonTX1 platform. The method comprises the steps of S1, preprocessing video streams obtained through video collection; S2, carrying out H.264 coding compression on the preprocessed video data to generate compressed code streams, packaging the code streams and sending the code streams through a network; and S3, receiving the compressed code streams, carrying out decoding and format conversion on the code streams and displaying a collected video in a corresponding display unit. According to the method andthe device, the defect that the GPU accelerated coding and decoding cannot be carried out on the JetsonTX1 platform is overcome; a video real-time processing task is realized; the video transmission and storage timeliness is greatly improved; the video transmission delay time is reduced; and the delay of a video transmission system for the video data streams of which frame rate is 30 frames per second and video resolution comprises 640x480, 1280x720 and 1920x1080 is controlled within 200ms.

Description

technical field [0001] The present invention relates to the technical field of image processing, in particular to an H.264 video encoding and decoding method and device based on the JetsonTX1 platform. Background technique [0002] JetsonTX1 is an embedded GPU development platform launched by NVIDIA. Although it is only the size of a credit card, it has an advanced embedded operating system, ultra-high computing performance and GPU acceleration technology. It is the most ideal embedded solution for smart drones and robots. [0003] When implementing vision processing tasks on the JetsonTX1 platform, there are the following disadvantages: [0004] 1) Due to the large amount of video data and the limitation of transmission bandwidth, the direct transmission of the original image cannot meet the real-time requirements, the transmission delay is large, and the frame loss is serious; [0005] 2) JetsonTX1's X264 and FFMPEG two classic development libraries, the design of encodin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/42
CPCH04N19/42
Inventor 张令川李寒松王军乐国庆苏帅魏宁
Owner BEIJING HUAHANG RADIO MEASUREMENT & RES INST
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