Also, this file format is indeed more gadget friendly than its counterpart. If so, converting QuickTime MOV to MP4 can be your best choice as MP4 is more flexible than MOV files, it can be opened with almost all media players. However, MOV files are always proved to be large and uncompressed file that may take up too much room on your computer or hard drive, even it's not easy to upload to popular video websites like YouTube or share video files with someone who doesn't have a Mac, and so on. As one of the primary formats for Apple QuickTime, the QuickTime MOV videos are commonly used by Mac users.