rtsp-downloader

用 ffmpeg 来给指定的 rtsp/http 视频流录像，存储到本地。基于 Docker 安装，用在 openwrt 里。

Docker 构建和部署

准备工作，构建和安装 docker 包，先把本机的 Docker 启动：

• 本地打包：npm run docker:build
• 给arm的软路由打包：npm run docker:build_arm
• 本地调试启动：npm run start
• 导出tar包到本地：docker save -o rtsp-downloader.tar rtsp-downloader
• openwrt 安装包：docker load < rtsp-downloader.tar

把 tar 拷贝到 openwrt 里，启动容器：

docker run --init -d --restart=unless-stopped -v /mnt/usb7-2/Camera:/app/videos -v /root/Configs/rtsp-downloader:/app/config -e TZ=Asia/Shanghai --publish 3000:3000 --name rtsp-downloader rtsp-downloader /app/bin/recorder.js

Mount 两个目录：

• 配置目录：映射到/app/config
• 录像目录：映射到/app/videos

配置目录中存放一个 config.json 文件：

{
  "url": "http://47.51.131.147/-wvhttp-01-/GetOneShot?image_size=1280x720&frame_count=1000000000",
  "timeLimit": 15,
  "folderSizeLimit" : 5,
  "name": "cam1",
}

• url: 视频流地址
• timeLimit: 视频文件时长，默认 15 分钟
• folderSizeLimit: 文件夹大小限制，默认 5 GB
• name: 摄像头名称，默认 cam1

openwrt 启动容器报错：“[FATAL tini (7)] exec /app/bin.js failed: No such file or directory”

这个是 openwrt 的 bug，别用他的后台 GUI 导入镜像文件，要手动拷贝进 openwrt 然后手动执行docker load ...命令

ps:

docker 国内能用的源：https://docker.udayun.com

源码开发和调试

引用方法：

npm i --save rtsp-downloader

仓库源码调试方法：

代码调用方式参照：../example/home.js 或者执行 npm run dev

使用方式：

const Recorder = require('rtsp-downloader').Recorder
const FileHandler = require('rtsp-downloader').FileHandler;

例子：

const Recorder = require('rtsp-downloader').Recorder

var rec = new Recorder({
  url: 'rtsp://192.168.1.12:8554/unicast',
  timeLimit: 60, // time in seconds for each segmented video file
  folder: '/Users/tmp/videos',
  folderSizeLimit : 10, // 10 G
  name: 'cam1',
})
// Starts Recording
rec.startRecording();

记录音频的例子：

const Recorder = require('rtsp-downloader').Recorder

var rec = new Recorder({
  url: 'rtsp://192.168.1.12:8554/unicast',
  timeLimit: 60, // time in seconds for each segmented video file
  folder: '/Users/tmp/videos',
  name: 'cam1',
  type: 'audio',
})

rec.startRecording();

// stop recording
setTimeout(() => {
  console.log('Stopping Recording')
  rec.stopRecording()
  rec = null
}, 125000)

截图的例子：

const Recorder = require('rtsp-downloader').Recorder

var rec = new Recorder({
  url: 'rtsp://192.168.1.12:8554/unicast',
  folder: '/Users/tmp/imgs/',
  name: 'cam1',
  type: 'image',
})

rec.captureImage(() => {
  console.log('Image Captured')
})

管理资源目录：

const FileHandler = require('rtsp-downloader').FileHandler;
const fh = new FileHandler()

// RETURNS DIRECTORY SIZE
fh.getDirectorySize('/Users/tmp/videos/', (err, value) => {
  if (err) {
    console.log('Error Occured')
    console.log(err)
    return true
  }
  console.log('Folder Size is ' + value)
})

// REMOVES ALL MEDIA FILES
fh.removeDirectory('/Users/tmp/videos/*', () => {
  console.log('Done')re
});

自定义目录格式

const Recorder = require('rtsp-downloader').Recorder

var rec = new Recorder({
  url: 'rtsp://192.168.1.12:8554/unicast',
  timeLimit: 60, // time in seconds for each segmented video file
  folder: '/Users/tmp/videos',
  name: 'cam1',
  directoryPathFormat: 'MMM-D-YYYY',
  fileNameFormat: 'M-D-h-mm-ss',
});

// Default directoryPathFormat : MMM-Do-YY
// Default fileNameFormat : YYYY-M-D-h-mm-ss
// Refer to https://momentjscom.readthedocs.io/en/latest/moment/04-displaying/01-format/
//  for custom formats.
// Starts Recording
rec.startRecording();

判断是否正在录像：

const Recorder = require('rtsp-downloader').Recorder

var rec = new Recorder({...});

// check if recoder is running?
rec.isRecoding(); // return true or false