Compress Video with FFmpeg

compressvideo.js

const compressVideo = (req,res,next) => {
  var cmd = 'ffmpeg';
  var args = [
    '-i', constants.rawVideosPath + req.file.filename,
    '-c', 'copy', 
    '-vcodec', 'libx264', 
    '-crf', '24',
    '-an', constants.processedVideosPath + req.file.filename
  ];

  var proc = spawn(cmd, args);

  proc.stdout.on('data', function(data) {
    console.log(data);
  });

  proc.stderr.on('data', function(data) {
    console.log(data);
  });

  proc.on('close', function() {
    console.log('finished');
    next()
  });
}