: A sign that the file was likely converted from an Apple format to a more universal MP4. Why We Should Care (But Usually Don't)
: The version number (because 1 through 29 just weren't quite right). "HD 1080p" : The resolution quality. my_movie_30_-_hd_1080p.mov (1080p).mp4
The Mystery of "my_movie_30": A Love Letter to Our Unnamed Digital Memories : A sign that the file was likely