title: Reading IPTC properties on QuickTime files with MetadataExtractor in C#?
body: <p>I'm successfully using the MetadataExtractor library in C# to read EXIF and IPTC information out of JPEG files.</p>
  
  <p>In Windows Explorer and Lightroom I can set similar values on .mp4 files (like headline and description), and see those values reflected in Windows Explorer and Lightroom. I can't see them with MetadataExtractor, however.</p>
  
  <p>Is there a way to access them? The only metadata directories I'm getting back are File Type, Movie Header, Track Header, and File.</p>
  
  <p>Thanks!</p>