title: how can i convert audio file to mpg file entirely in nodejs
body: <p>basically i am web developer so i have not much of an idea what to do. OR what to research at all. I want to make like exe file in nodejs that would</p>
  
  <ul>
  <li>take any audio file within it's directory</li>
  <li>convert them into mpg file with one default photo ('abc.jpg') for a
  video.</li>
  </ul>
  
  <p>Optional:-</p>
  
  <ul>
  <li>analyze sound and animate the circle's radius based on that and save
  that as a video along the audio, as opposed to static image.</li>
  </ul>
  
  <p>While, i'd really appreciate the whole solution and code for hardest parts however any useful hints are appreciated. </p>