title: How to create video with images and different time interval using ffmpeg
body: <p>It seems duplicate :
  <a href="https://stackoverflow.com/questions/10546755/how-to-create-video-with-images-and-different-time-interval">How to create video with images and different time interval?</a>
  But it ain't duplicate since the author of the above question has framed the wrong title because the images are displayed for fixed time-interval.</p>
  
  <p>What I want to do is this</p>
  
  <ol>
  <li><p>Image 1 : 5 seconds</p></li>
  <li><p>Image 2-5 : 10 seconds</p></li>
  <li><p>Image 6 : 4 seconds</p></li>
  </ol>
  
  <p>Please let me know how can I achieve this using ffmpeg. I tried googling but found nothing as such.</p>