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• Error : ffmpeg exited with code 2 - Docker Container

  15 avril 2020, par Vincenzo Asta

  I created a Docker Container that when I run I get this error (Why do I get this error ? It works locally) :

  



  {&#xA;    "message": "Error: ffmpeg exited with code 2&#xA;    at ChildProcess.<anonymous> (/app/lib/node_modules/fluent-ffmpeg/lib/processor.js:182:22)&#xA;    at emitTwo (events.js:126:13)&#xA;    at ChildProcess.emit (events.js:214:7)&#xA;    at Process.ChildProcess._handle.onexit (internal/child_process.js:198:12)"&#xA;}&#xA;</anonymous>

  



  Below, the part of code where I get the error (in particular the execution goes into reject) :

  



  var ffmpeg = require('fluent-ffmpeg');

module.exports = (sourcePath, outputPath, af, outputFormat="mp3") => {
    return new Promise((resolve, reject) => {
        let proc = new ffmpeg({ source: sourcePath, nolog: true });
        proc.audioQuality(0);
        proc.audioFilters(af);
        proc.setFfmpegPath(__dirname + "/ffmpeg-20180325-5b31dd1-win64-static/bin/ffmpeg.exe");
        proc.toFormat(outputFormat).on('end', function () {
            resolve();
        })
        .on('error', function (err) {
            reject(err);
        })
            .saveToFile(outputPath);
    })
}


  



  My Dockerfile :

  



  FROM node:8.11.1

WORKDIR /app

COPY package*.json /app/

RUN npm install

COPY . /app/

EXPOSE 8000

CMD [ "node", "app.js" ]


  



  My package.json :

  



  {
  "name": "",
  "version": "1.0.0",
  "description": "",
  "main": "app.js",
  "author": "",
  "license": "ISC",
  "dependencies": {
    "express": "^4.16.4",
    "azure-storage": "^2.1.0",
    "crypto": "^0.0.3",
    "ffmpeg": "^0.0.4",
    "ffmpeg-normalize": "^1.3.0",
    "fluent-ffmpeg": "^2.1.2",
    "fs": "^0.0.1-security",
    "jmespath": "0.15.0",
    "mp3-duration": "^1.1.0",
    "striptags": "^3.1.1"
  }
}


  


• prevent ffmpeg from opening console window

  10 février 2020, par Yesub

  I have a node/express server which is used to give streams from IP camera to a website. Everything is working well. I run that webserver with PM2 on a windows server.

  The problem : for each stream I have a windows console opening with just nothing logged in. The console reopen when I try to close it.

  Is there a way to prevent those console to open ?

  Here is the related node.js code :

  const { NodeMediaServer } = require('node-media-server');
  
  
  
  private _initiate_streams(): void{
  
      DatabaseProvider.instance.camerasDao.getCamerasList().pipe(
  
        take(1)
  
      ).subscribe(
  
          (databaseReadOperationResult: DatabaseReadOperationResult) => {
  
              if (databaseReadOperationResult.successful === true){
  
                const cameras = databaseReadOperationResult.result;
  
                const tasks = [];
  
                cameras.forEach( camera => {
  
                  tasks.push(
  
                    {
  
                      app : config.get('media_server.app_name'),
  
                      mode: 'static',
  
                      edge: camera.rtsp_url,
  
                      name: camera.stream_name,
  
                      rtsp_transport: 'tcp'
  
                    }
  
                  )
  
                });
  
  
  
                const configMediaServer = {
  
                  logType: 3, // 3 - Log everything (debug)
  
                  rtmp: {
  
                      port: 1935,
  
                      chunk_size: 60000,
  
                      gop_cache: true,
  
                      ping: 60,
  
                      ping_timeout: 30
  
                  },
  
                  http: {
  
                      port: config.get('media_server.port'),
  
                      allow_origin: '*'
  
                  },
  
                  auth: {
  
                      play: true,
  
                      api: true,
  
                      publish: true,
  
                      secret: config.get('salt'),
  
                      api_user: 'user',
  
                      api_pass: 'password',
  
                  },
  
                  relay: {
  
                      ffmpeg: 'C:\\FFmpeg\\bin\\ffmpeg.exe',
  
                      tasks: tasks
  
                  }
  
                };
  
  
  
                var nms = new NodeMediaServer(configMediaServer)
  
                nms.run();
  
              } else {
  
                  // catch exception
  
              }
  
          }
  
      );
  
    }

• Subtract two timecodes in bash, for use in ffmpeg

  3 septembre 2019, par friendlygiraffe

  I am running ffmpeg in terminal on a mac, to trim a movie file losslessly using the following in bash :

  startPosition=00:00:14.9
  
  endPosition=00:00:52.1
  
  ffmpeg -i mymovie.mov -ss $startPosition -to $endPosition -c copy mymovie_trimmed.mov

  But that doesn’t seek the nearest keyframe and causes sync issues. See here : https://github.com/mifi/lossless-cut/pull/13

  So I need to rearrange my code like this :

  ffmpeg -ss $startPosition -i mymovie.mov -t $endPosition -c copy mymovie_trimmed.mov

  (the -to property seems to get ignored, so I am using -t (duration) instead). My question is how can I reliably subtract the $startPosition variable from the $endPosition to get the duration ?

  EDIT : I used oguz-ismail’s suggestion with using gdate instead of date (and brew install coreutils) :

  startPosition=00:00:10.1
  
  endPosition=00:00:50.1
  
  x=$(gdate -d"$endPosition" +'%s%N')
  
  y=$(gdate -d"$startPosition" +'%s%N')
  
  duration=$(bc -lq <<<"scale=1; ($x - $y) / 1000000000")

  This gives me output of 40.1, how would I output it as 00:00:40.0 ?