title: Rebuilding MP4 file from fragmented MP4 "mdat" atom?
body: <p>I'm trying to rebuild a video file from a Smooth Streaming server. Smooth Streaming serves fMP4 files which are regular MP4 files without neither their FTYP nor their MOOV atoms.</p>
  
  <p>All the informations stored in those atom are placed into a Manifest XML file, which I have.</p>
  
  <p>Is there a way to programmatically rebuild the original MP4 file, either by:</p>
  
  <ul>
  <li>rebuilding a new file straight from H264/AAC content located in MDAT
  (and picture format infos); or</li>
  <li>rebuilding FTYP and MOOV atoms</li>
  </ul>
  
  <p>Or else, is there a tool which can merge fMP4?</p>