title: iOS requestExportSessionForVideo exports video without metadata
body: <p>I use <strong>requestExportSessionForVideo</strong> for exporting video located in iPhone to document directory.</p>
  
  <p>I gave options and exportpreset to export the exactly same video saved in camera roll.</p>
  
  <p>But the result is little bit different. When I compare it with beyond compare it has difference <strong>especially in metadata</strong>.</p>
  
  <p>How could I export video which exactly same as the video in camera roll?</p>
  
  <p><strong>FYI</strong></p>
  
  <p>I gave a exportPreset option as <strong>AVAssetExportPresetPassthrough</strong>
  and for PHVideoRequestOptions, I gave <strong>PHVideoRequestOptionsDeliveryModeAutomatic</strong> or <strong>PHVideoRequestOptionsDeliveryModeHighQualityFormat</strong> but didn't work.</p>
  
  <p>Thanks!</p>