For the uninitiated, "IMG" followed by a four-digit number is the default naming scheme used by for photos and videos. The ".MOV" extension indicates it is a video file, specifically a QuickTime format. IMG : Short for "Image" (even for videos).
If you are trying to find the source of a video and only have a filename, don't lose hope. Instead of a text search, try these methods: Download IMG 8121 MOV
Why search for it? Usually, it's a "shot in the dark." A user might have a thumbnail or a reference to a file name in an old backup and hopes that the video was famous enough to be indexed by Google. For the uninitiated, "IMG" followed by a four-digit
How to for better privacy before sharing videos? For the uninitiated