MP4 is a subset of MOV. Converting is fast because they share the same codecs. You can change the container without re-encoding.
You found an old hard drive. Inside Backup_2019/DCIM/100APPLE/ sits . You have no idea what is on it. IMG-3750.MOV
If you double-click the file and nothing happens, do not panic. Here is the hierarchy of players that work best with MOV files: MP4 is a subset of MOV
At first glance, it is a meaningless string of alphanumeric characters. It is technical, dry, and devoid of poetry. Yet, a filename like IMG-3750.MOV represents a specific moment in time, a fragment of captured reality, and a data point in a personal history. It is a digital fossil, preserved in the amber of a hard drive, waiting to be excavated. You found an old hard drive
To truly master , you must understand what is inside it. Unlike a simple AVI or WMV, MOV uses "atoms" (or "boxes") to store data. These atoms include: