I wrote a long post about how I used ExifTool and also Federico Viticci's Hazel rules workflow to manage my iPhone photo and video library. I also managed to extract some extra tags from QuickTime movies to re-stamp missing File Creation Dates that had been stripped. I thought others might find it useful: http://www.polaine.com/2015/01/fixing-photo-and-video-file-metadata-with-exiftool/