title: FFMPEG video conversion to MP4 works everywhere except in iOS Safari/Chrome
body: <p>I use the following code to convert <code>.webm</code> videos to <code>.mp4</code> using the FFMPEG library:</p>
  
  <pre><code>ffmpeg -i video.webm -vcodec h264 -acodec aac -strict experimental video.mp4
  </code></pre>
  
  <p>This works flawless when playing the converted video in Windows (Chrome/Firefox), Mac (Safari/Chrome), Android (Chrome) but it does not work when watching through iOS (Safari/Chrome). </p>
  
  <p>At first I thought it might be an <code>mp4</code> problem? But then I played without any problems in my iOS Safari this video <a href="https://www.w3schools.com/html/mov_bbb.mp4" rel="nofollow noreferrer">https://www.w3schools.com/html/mov_bbb.mp4</a> which is also a <code>mp4</code>.</p>
  
  <p>So this tells me that something is not quite right about the conversion.</p>
  
  <p>What am I missing in the conversion?</p>
  
  <p>Log from PuTTy: <a href="https://pastebin.com/VLSPL0nC" rel="nofollow noreferrer">https://pastebin.com/VLSPL0nC</a></p>