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• How to stream to a element using fluent-ffmpeg

  19 mai 2017, par Lukas

  I am writing on an electron application and I am trying to use fluent-ffmpeg to create a streaming server and use a <video></video> element to consume that stream. I wonder how to set up fluent-ffmpeg and the <video></video> using flowplayer like this :

  Server :

  const express = require('express');
  
  const ffmpeg = require('fluent-ffmpeg');
  
  
  
  const app = express();
  
  
  
  app.use(express.static(__dirname + '/flowplayer'));
  
  
  
  app.get('/', function(req, res) {
  
      res.send('index.html');
  
  });
  
  
  
  app.get('/video/:filename', function(req, res) {
  
      res.contentType('flv');
  
      // make sure you set the correct path to your video file storage
  
      const pathToMovie = '/Users/luke/Movies/' + req.params.filename;
  
      const proc = ffmpeg(pathToMovie)
  
      // use the 'flashvideo' preset (located in /lib/presets/flashvideo.js)
  
          .preset('divx')
  
          // setup event handlers
  
          .on('end', function() {
  
              console.log('file has been converted succesfully');
  
          })
  
          .on('error', function(err) {
  
              console.log('an error happened: ' + err.message);
  
          })
  
          // save to stream
  
          .pipe(res, {end:true});
  
  });
  
  
  
  app.listen(4000);

  Webseite with <video></video> element :

    
  
      
  
      <code class="echappe-js">&lt;script src=&quot;https://code.jquery.com/jquery-1.11.2.min.js&quot;&gt;&lt;/script&gt;
      
  &lt;script src='http://stackoverflow.com/feeds/tag/flowplayer-7.0.4/flowplayer.min.js'&gt;&lt;/script&gt;
  
        
  &lt;script&gt;<br />
  
      require('./ffmpeg-server.js');<br />
  
    &lt;/script&gt;
  

  The main problem I see right now is to find a way to set up the right settings for ffmpeg (currently I am using the divx preset together with the video type video/mpeg4 in the HTML which (of course) does not work.

• FFMpeg not merging videos well in Nodejs on same file

  5 mai 2017, par G.Darcan

  I am using MediaStreamRecorder to make a stream, I am getting video blobs from there every 5 seconds and i want to concatenate them in one file on server-side.
  So lets say i have a video named sample_1.mp4 . When i get the next video, i want to save it as sample_2.mp4 , and append it to sample_1.mp4 with ffmpeg, and after that save the output as sample_2.mp4 again.But it only saves first video and the last video parts.Can you help me please ? Thanks.

              var fs = require('fs');
  
              fs.writeFileSync("/sample_2.mp4", message.binaryData );
  
              console.log("The file3 was saved!");
  
              var firstFile = "/sample_1.mp4";
  
              var secondFile = "/sample_2.mp4";
  
              var output = "/sample_2.mp4";
  
              var proc = ffmpeg(firstFile)
  
              .input(secondFile)
  
              .on('end', function() {
  
                  console.log('files3 have been merged succesfully');
  
              })
  
              .on('error', function(err) {
  
                  console.log('an error happened: ' + err.message);
  
              })
  
              .mergeToFile(output, "/tmp");

• Why am I getting a 'withSize' of undefined error ?

  1er mai 2017, par Nick Garver

  I am trying to simply covert an avi video to flv using the example in the fluent-ffmpeg documentation. I am doing this for my node.js app but for some reason no matter how I specify my video path I seem to keep getting "undefined" when I do thing like .setStartTime or .setDuration. I am aware of this post but I still seem to be getting this error. Could anyone help me just set up the basic starter code ? Thank you

  var ffmpeg = require('fluent-ffmpeg');
  
  
  
  
  
  // path to my video file
  
  var infs = fs.createReadStream('uwf.mp4');
  
  infs.on('error', function(err) {
  
    console.log("u messed up");
  
  });
  
  
  
  var proc = new ffmpeg({ source: infs, nolog: true })
  
    .setFfmpegPath("ffmpeg") //Set the path to where FFmpeg is installed 
  
    .setStartTime(25)
  
    .setDuration(2)
  
    .saveToFile('test.mp4');

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