title: Fragmented mp4 cannot be played on pure html5 video
body: <p>I need to use a video tag to serve over 3GB of video on the web.
  When the page is loaded, it takes a long time for the media element to receive the <em>'loadedmetadata event'</em>.</p>
  
  <p>I've found that the size of the <em>moov box</em> is too large <em>(33MB)</em>.
  So when I re-encoded it with the <em>'empty_moov + frag_keyframe'</em> option of <em>'ffmpeg'</em>, but it also took longer to fetch all fragmented information from the <em>'Inspector - Network'</em> tab in Chrome.</p>
  
  <p>Is there a way to <strong>speed up</strong> loading when playing <em>'fragmented mp4'</em> with html5 video tag?</p>