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通过rtsp协议拉取前端摄像头码流,通过opencv进行AI处理(如人脸检测),重新生成视频数据,并进行rtsp服务转发,用于后端设备(如视频录像机)或其他客户端拉流。

Home Page: http://note.youdao.com/noteshare?id=53d7f3cf891fa7870e23879f4fc17cca

Python 100.00%

rtsp_opencv_demo's Introduction

video_stream_convert

通过rtsp协议拉取前端摄像头码流,通过opencv进行AI处理(如人脸检测),重新生成视频数据,并进行rtsp服务转发,用于后端设备(如视频录像机)或其他客户端拉流。

opencv_test

环境安装

  1. 安装opencv
$ pip install --upgrade pip 
$ pip install wheel #如果确定已经安装了wheel就不用执行这条指令
$ pip install opencv-python #安装opencv 
$ pip install opencv-contrib-python #安装opencv的contrib扩展包
  1. 安装vlc
sudo add-apt-repository ppa:videolan/master-daily 
sudo apt-get update 
sudo apt-get install vlc
  1. 安装ffmpeg
sudo add-apt-repository ppa:djcj/hybrid
sudo apt-get update
sudo apt-get install ffmpeg

测试Camera拉流

可以安装VLC测试下是否正常拉流

cvlc "rtsp://admin:[email protected]/cam/realmonitor?channel=1&subtype=0" //注意拉刘请求带引号 否则可能解析错误

拉流请求中admin 为账号 123456为密码 172.16.1.29为摄像头IP
/cam/realmonitor?channel=1&subtype=0 为大华设备的rtsp拉流格式 channel为通道 subtype为主辅码流

测试openCV人脸检测功能

使用opencv拉前端摄像头流,做AI处理(如人脸检测),并进行显示, 直接运行python stream_test.py 按q退出 opencv_test

搭建ffmpeg码流转发服务

后端设备如果接NVR(网络硬盘录像机),需支持rtsp服务,

  1. 启动 ffserver转发服务器
sudo vim /etc/ffserver.conf   # 修改ffserver配置如下, 见ffserver.conf
ffserver -f /etc/ffserver.conf
  1. 将opencv处理后的视频推到ffserver
python stream_to_stdout.py | ffmpeg -f rawvideo -pixel_format bgr24 -video_size 1280x720 -framerate 10 -i - http://localhost:8090/feed1.ffm

//pixel_format 为opencv输出的图片格式,为bgr24 video_size 为图片大小 framerate 为帧率
  1. 使用VLC拉流 可以同时拉camera与ffserver的码流,对比查看,命令分别如下
cvlc "rtsp://admin:[email protected]/cam/realmonitor?channel=1&subtype=0"
cvlc "rtsp://127.0.0.1:8554/test.h264"

运行效果如下 延时大约1.5秒 test

其他

详细笔记
http://note.youdao.com/noteshare?id=53d7f3cf891fa7870e23879f4fc17cca

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