Although you can easily view MOV files within Mac environments, there're times when the MOV videos can't open in QuickTime properly, can't sync to iPhone with iTunes or Finder, or cannot be recognized by iMovie due to the incompatible codecs.
MOV is an MPEG 4 video container file format and is specifically designed for QuickTime Player. mp4.I'm using a MacBook and when I sync the video to my iPhone, it can't open.
8 MOV converters to convert MOV files to MP4 on MacOS and Windows