Img_5164.mov -

: This is the "Swiss Army Knife" of video players. It can play almost any MOV file regardless of the codec used.

What is IMG_5164.MOV? Everything You Need to Know About This Mystery File IMG_5164.MOV

: This is a sequential number assigned by your device. It means this was the 5,164th piece of media captured on that specific device. : This is the "Swiss Army Knife" of video players

The filename is a standard naming convention used by Apple devices (iPhone/iPad) and many digital cameras. The "IMG" Prefix : Stands for "Image" (even for videos). IMG_5164.MOV