function getDownloadLink(fileData, fileName) {
  var a = document.createElement('a');
  a.download = fileName;
  var blob = new Blob([fileData]);
  var src = window.URL.createObjectURL(blob);
  a.href = src;
  a.textContent = 'Click here to download ' + fileName + "!";
  return a;
}

var result = ffmpeg_run(module);
result.forEach(function(file) {
  getDownloadLink(file.data, file.name);
});