Linux 36.3 + JetPack v6.0@jetson-inference之视频操作

2024-06-01 09:28
文章标签 视频 linux 操作 jetson jetpack inference v6.0 36.3

本文主要是介绍Linux 36.3 + JetPack v6.0@jetson-inference之视频操作，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

Linux 36.3 + JetPack v6.0@jetson-inference之视频操作

  • 1. 源由
  • 2. 输入输出源
    • 2.1 输入
    • 2.2 输出
  • 3. 示例
    • 3.1 MIPI CSI 摄像头
    • 3.2 V4L2 摄像头
    • 3.3 WebRTC
    • 3.4 RTP
    • 3.5 RTSP
    • 3.6 Video 文件
    • 3.7 Image 文件
  • 4. 代码分析
    • 4.1 Python
    • 4.2 C++
  • 5. 参考资料

1. 源由

对jetson-inference示例代码完成编译之后，首先确保视频、图像方面的操作没有问题。

因为是所有示例基本上都是针对视频或者图像进行深度机器学习操作的。

2. 输入输出源

2.1 输入

InputProtocolResource URINotes
MIPI CSI cameracsi://csi://0CSI camera 0 (substitute other camera numbers for 0)
V4L2 camerav4l2://v4l2:///dev/video0V4L2 device 0 (substitute other camera numbers for 0)
WebRTC streamwebrtc://webrtc://@:8554/my_inputFrom browser webcam to localhost, port 8554 (requires HTTPS/SSL)
RTP streamrtp://rtp://@:1234localhost, port 1234 (requires additional configuration)
RTSP streamrtsp://rtsp://:1234Replace with remote host’s IP or hostname
Video filefile://file://my_video.mp4Supports loading MP4, MKV, AVI, FLV (see codecs below)
Image filefile://file://my_image.jpgSupports loading JPG, PNG, TGA, BMP, GIF, etc.
Image sequencefile://file://my_directory/Searches for images in alphanumeric order
    input                resource URI of the input stream, for example:* /dev/video0               (V4L2 camera #0)* csi://0                   (MIPI CSI camera #0)* rtp://@:1234              (RTP stream)* rtsp://user:pass@ip:1234  (RTSP stream)* webrtc://@:1234/my_stream (WebRTC stream)* file://my_image.jpg       (image file)* file://my_video.mp4       (video file)* file://my_directory/      (directory of images)--input-width=WIDTH    explicitly request a width of the stream (optional)--input-height=HEIGHT  explicitly request a height of the stream (optional)--input-rate=RATE      explicitly request a framerate of the stream (optional)--input-save=FILE      path to video file for saving the input stream to disk--input-codec=CODEC    RTP requires the codec to be set, one of these:* h264, h265* vp8, vp9* mpeg2, mpeg4* mjpeg--input-decoder=TYPE   the decoder engine to use, one of these:* cpu* omx  (aarch64/JetPack4 only)* v4l2 (aarch64/JetPack5 only)--input-flip=FLIP      flip method to apply to input:* none (default)* counterclockwise* rotate-180* clockwise* horizontal* vertical* upper-right-diagonal* upper-left-diagonal--input-loop=LOOP      for file-based inputs, the number of loops to run:* -1 = loop forever*  0 = don't loop (default)* >0 = set number of loops

2.2 输出

OutputProtocolResource URINotes
WebRTC streamwebrtc://webrtc://@:8554/my_outputSend to browser, port 8554, stream name “my_output”
RTP streamrtp://rtp://:1234Replace with remote host’s IP or hostname
RTSP streamrtsp://rtsp://@:1234/my_outputReachable at rtsp://:1234/my_output
Video filefile://file://my_video.mp4Supports saving MP4, MKV, AVI, FLV (see codecs below)
Image filefile://file://my_image.jpgSupports saving JPG, PNG, TGA, BMP
Image sequencefile://file://image_%i.jpg%i is replaced by the image number in the sequence
OpenGL windowdisplay://display://0Creates GUI window on screen 0
    output               resource URI of the output stream, for example:* file://my_image.jpg       (image file)* file://my_video.mp4       (video file)* file://my_directory/      (directory of images)* rtp://<remote-ip>:1234    (RTP stream)* rtsp://@:8554/my_stream   (RTSP stream)* webrtc://@:1234/my_stream (WebRTC stream)* display://0               (OpenGL window)--output-codec=CODEC   desired codec for compressed output streams:* h264 (default), h265* vp8, vp9* mpeg2, mpeg4* mjpeg--output-encoder=TYPE  the encoder engine to use, one of these:* cpu* omx  (aarch64/JetPack4 only)* v4l2 (aarch64/JetPack5 only)--output-save=FILE     path to a video file for saving the compressed streamto disk, in addition to the primary output above--bitrate=BITRATE      desired target VBR bitrate for compressed streams,in bits per second. The default is 4000000 (4 Mbps)--headless             don't create a default OpenGL GUI window

3. 示例

3.1 MIPI CSI 摄像头

$ video-viewer csi://0                        # MIPI CSI camera 0 (substitue other camera numbers)
$ video-viewer csi://0 output.mp4             # save output stream to MP4 file (H.264 by default)
$ video-viewer csi://0 rtp://<remote-ip>:1234 # broadcast output stream over RTP to <remote-ip>

3.2 V4L2 摄像头

$ video-viewer v4l2:///dev/video0                 # /dev/video0 can be replaced with /dev/video1, ect.
$ video-viewer /dev/video0                        # dropping the v4l2:// protocol prefix is fine
$ video-viewer /dev/video0 output.mp4             # save output stream to MP4 file (H.264 by default)
$ video-viewer /dev/video0 rtp://<remote-ip>:1234 # broadcast output stream over RTP to <remote-ip>

3.3 WebRTC

$ video-viewer /dev/video0 webrtc://@:8554/my_output               # send V4L2 webcam to browser
$ video-viewer webrtc://@:8554/my_input output.mp4                 # receive browser webcam (requires HTTPS/SSL) and save to MP4
$ video-viewer webrtc://@:8554/my_input webrtc://@:8554/my_output  # receieve + send (full-duplex loopback)

3.4 RTP

$ video-viewer --input-codec=h264 rtp://@:1234         # recieve on localhost port 1234
$ video-viewer --input-codec=h264 rtp://224.0.0.0:1234 # subscribe to multicast group
$ video-viewer --bitrate=1000000 csi://0 rtp://<remote-ip>:1234         # transmit camera over RTP, encoded as H.264 @ 1Mbps 
$ video-viewer --output-codec=h265 my_video.mp4 rtp://<remote-ip>:1234  # transmit a video file over RTP, encoded as H.265

3.5 RTSP

$ video-viewer rtsp://<remote-ip>:1234 my_video.mp4      # subscribe to RTSP feed from <remote-ip>, port 1234 (and save it to file)
$ video-viewer rtsp://username:password@<remote-ip>:1234 # with authentication (replace username/password with credentials)
$ video-viewer /dev/video0 rtsp://@:1234/my_output                 # stream a V4L2 camera out over RTSP 
$ video-viewer rtsp://<remote-ip>:1234/input rtsp://@:1234/output  # subscribe to an RTSP feed, and relay it (loopback)

3.6 Video 文件

# playback
$ video-viewer my_video.mp4                              # display the video file
$ video-viewer my_video.mp4 rtp://<remote-ip>:1234       # transmit the video over RTP# recording
$ video-viewer csi://0 my_video.mp4                      # record CSI camera to video file
$ video-viewer /dev/video0 my_video.mp4                  # record V4L2 camera to video file

3.7 Image 文件

$ video-viewer input.jpg output.jpg	# load/save an image
$ video-viewer input_dir/ output_dir/   # load all images from input_dir and save them to output_dir
$ video-viewer "*.jpg" output_%i.jpg    # load all jpg images and save them to output_0.jpg, output_1.jpg, ect

4. 代码分析

4.1 Python

代码：video-viewer.py

Root
├── Imports
│   ├── import sys
│   ├── import argparse
│   └── from jetson_utils import videoSource, videoOutput, Log
├── Command-line Argument Parsing
│   ├── Create Argument Parser
│   │   ├── Description: "View various types of video streams"
│   │   ├── Formatter Class: argparse.RawTextHelpFormatter
│   │   └── Epilog: videoSource.Usage() + videoOutput.Usage() + Log.Usage()
│   ├── Add Arguments
│   │   ├── input (URI of the input stream)
│   │   └── output (URI of the output stream, optional)
│   └── Parse Arguments
│       ├── args = parser.parse_known_args()[0]
│       └── Handle Parsing Exceptions
│           ├── Print Help
│           └── Exit
├── Create Video Sources & Outputs
│   ├── input = videoSource(args.input, argv=sys.argv)
│   └── output = videoOutput(args.output, argv=sys.argv)
├── Capture Frames Loop├── Initialize Frame Counter│   └── numFrames = 0├── while True Loop├── Capture Image│   └── img = input.Capture()├── Handle Timeout│   └── if img is None: continue├── Log Verbose Information│   └── if numFrames % 25 == 0 or numFrames < 15:│       └── Log.Verbose(...)├── Increment Frame Counter│   └── numFrames += 1├── Render Image│   └── output.Render(img)├── Update Title Bar│   └── output.SetStatus(...)└── Exit on EOS├── if not input.IsStreaming() or not output.IsStreaming():└── break

4.2 C++

代码：video-viewer.cpp

#include statements
├── "videoSource.h"
├── "videoOutput.h"
├── "logging.h"
├── "commandLine.h"
└── <signal.h>Global variables
└── bool signal_recieved = false;Function definitions
├── void sig_handler(int signo)
│   └── if (signo == SIGINT)
│       ├── LogInfo("received SIGINT\n");
│       └── signal_recieved = true;
└── int usage()├── printf("usage: video-viewer [--help] input_URI [output_URI]\n\n");├── printf("View/output a video or image stream.\n");├── printf("See below for additional arguments that may not be shown above.\n\n");├── printf("positional arguments:\n");├── printf("    input_URI       resource URI of input stream  (see videoSource below)\n");├── printf("    output_URI      resource URI of output stream (see videoOutput below)\n\n");├── printf("%s", videoSource::Usage());├── printf("%s", videoOutput::Usage());└── printf("%s", Log::Usage());main function
├── Parse command line
│   ├── commandLine cmdLine(argc, argv);
│   └── if (cmdLine.GetFlag("help"))
│       └── return usage();
├── Attach signal handler
│   └── if (signal(SIGINT, sig_handler) == SIG_ERR)
│       └── LogError("can't catch SIGINT\n");
├── Create input video stream
│   ├── videoSource* input = videoSource::Create(cmdLine, ARG_POSITION(0));
│   └── if (!input)
│       ├── LogError("video-viewer:  failed to create input stream\n");
│       └── return 0;
├── Create output video stream
│   ├── videoOutput* output = videoOutput::Create(cmdLine, ARG_POSITION(1));
│   └── if (!output)
│       ├── LogError("video-viewer:  failed to create output stream\n");
│       └── return 0;
├── Capture/display loop
│   ├── uint32_t numFrames = 0;
│   └── while (!signal_recieved)
│       ├── uchar3* image = NULL;
│       ├── int status = 0;
│       ├── if (!input->Capture(&image, &status))
│       │   └── if (status == videoSource::TIMEOUT)
│       │       └── continue;
│       │   └── break; // EOS
│       ├── if (numFrames % 25 == 0 || numFrames < 15)
│       │   └── LogVerbose("video-viewer:  captured %u frames (%ux%u)\n", numFrames, input->GetWidth(), input->GetHeight());
│       ├── numFrames++;
│       └── if (output != NULL)
│           ├── output->Render(image, input->GetWidth(), input->GetHeight());
│           ├── char str[256];
│           ├── sprintf(str, "Video Viewer (%ux%u) | %.1f FPS", input->GetWidth(), input->GetHeight(), output->GetFrameRate());
│           ├── output->SetStatus(str);
│           └── if (!output->IsStreaming())
│               └── break;
├── Destroy resources
│   ├── printf("video-viewer:  shutting down...\n");
│   ├── SAFE_DELETE(input);
│   └── SAFE_DELETE(output);
└── printf("video-viewer:  shutdown complete\n");

5. 参考资料

【1】jetson-inference - Camera Streaming and Multimedia

这篇关于Linux 36.3 + JetPack v6.0@jetson-inference之视频操作的文章就介绍到这儿，希望我们推荐的文章对编程师们有所帮助！


http://www.chinasem.cn/article/1020611。

相关文章

Linux换行符的使用方法详解

Linux换行符的使用方法详解

《Linux换行符的使用方法详解》本文介绍了Linux中常用的换行符LF及其在文件中的表示,展示了如何使用sed命令替换换行符,并列举了与换行符处理相关的Linux命令,通过代码讲解的非常详细,需要的... 目录简介检测文件中的换行符使用 cat -A 查看换行符使用 od -c 检查字符换行符格式转换将
阅读更多...
Linux系统配置NAT网络模式的详细步骤(附图文)

Linux系统配置NAT网络模式的详细步骤(附图文)

《Linux系统配置NAT网络模式的详细步骤(附图文)》本文详细指导如何在VMware环境下配置NAT网络模式,包括设置主机和虚拟机的IP地址、网关,以及针对Linux和Windows系统的具体步骤,... 目录一、配置NAT网络模式二、设置虚拟机交换机网关2.1 打开虚拟机2.2 管理员授权2.3 设置子
阅读更多...
Linux系统中卸载与安装JDK的详细教程

Linux系统中卸载与安装JDK的详细教程

《Linux系统中卸载与安装JDK的详细教程》本文详细介绍了如何在Linux系统中通过Xshell和Xftp工具连接与传输文件,然后进行JDK的安装与卸载,安装步骤包括连接Linux、传输JDK安装包... 目录1、卸载1.1 linux删除自带的JDK1.2 Linux上卸载自己安装的JDK2、安装2.1
阅读更多...
用js控制视频播放进度基本示例代码

用js控制视频播放进度基本示例代码

《用js控制视频播放进度基本示例代码》写前端的时候,很多的时候是需要支持要网页视频播放的功能,下面这篇文章主要给大家介绍了关于用js控制视频播放进度的相关资料,文中通过代码介绍的非常详细,需要的朋友可... 目录前言html部分:JavaScript部分:注意：总结前言在javascript中控制视频播放
阅读更多...
Python基于wxPython和FFmpeg开发一个视频标签工具

Python基于wxPython和FFmpeg开发一个视频标签工具

《Python基于wxPython和FFmpeg开发一个视频标签工具》在当今数字媒体时代,视频内容的管理和标记变得越来越重要,无论是研究人员需要对实验视频进行时间点标记,还是个人用户希望对家庭视频进行... 目录引言1. 应用概述2. 技术栈分析2.1 核心库和模块2.2 wxpython作为GUI选择的优
阅读更多...
Mysql表的简单操作(基本技能)

Mysql表的简单操作(基本技能)

《Mysql表的简单操作(基本技能)》在数据库中,表的操作主要包括表的创建、查看、修改、删除等,了解如何操作这些表是数据库管理和开发的基本技能,本文给大家介绍Mysql表的简单操作,感兴趣的朋友一起看... 目录3.1 创建表 3.2 查看表结构3.3 修改表3.4 实践案例：修改表在数据库中，表的操作主要
阅读更多...
C# WinForms存储过程操作数据库的实例讲解

C# WinForms存储过程操作数据库的实例讲解

《C#WinForms存储过程操作数据库的实例讲解》：本文主要介绍C#WinForms存储过程操作数据库的实例,具有很好的参考价值,希望对大家有所帮助,如有错误或未考虑完全的地方,望不吝赐教... 目录一、存储过程基础二、C# 调用流程1. 数据库连接配置2. 执行存储过程（增删改）3. 查询数据三、事务处
阅读更多...
Linux卸载自带jdk并安装新jdk版本的图文教程

Linux卸载自带jdk并安装新jdk版本的图文教程

《Linux卸载自带jdk并安装新jdk版本的图文教程》在Linux系统中,有时需要卸载预装的OpenJDK并安装特定版本的JDK,例如JDK1.8,所以本文给大家详细介绍了Linux卸载自带jdk并... 目录Ⅰ、卸载自带jdkⅡ、安装新版jdkⅠ、卸载自带jdk1、输入命令查看旧jdkrpm -qa
阅读更多...
Java使用Curator进行ZooKeeper操作的详细教程

Java使用Curator进行ZooKeeper操作的详细教程

《Java使用Curator进行ZooKeeper操作的详细教程》ApacheCurator是一个基于ZooKeeper的Java客户端库,它极大地简化了使用ZooKeeper的开发工作,在分布式系统... 目录1、简述2、核心功能2.1 CuratorFramework2.2 Recipes3、示例实践3
阅读更多...
Linux samba共享慢的原因及解决方案

Linux samba共享慢的原因及解决方案

《Linuxsamba共享慢的原因及解决方案》：本文主要介绍Linuxsamba共享慢的原因及解决方案,具有很好的参考价值,希望对大家有所帮助,如有错误或未考虑完全的地方,望不吝赐教... 目录linux samba共享慢原因及解决问题表现原因解决办法总结Linandroidux samba共享慢原因及解决
阅读更多...

Copyright China编程 23002807@qq.com

沪ICP备2023033072号-2