: Most likely captured on an iOS device (iPhone/iPad) or an Apple computer.
Knowing the platform (e.g., a specific website, your own phone, or a shared drive) will help in identifying the exact content of that video. IMG_5175.MOV
: If you found this on your own hard drive or phone, it is simply a video you recorded. You can view the specific metadata (date taken, location, and camera settings) by right-clicking the file and selecting "Get Info" (Mac) or "Properties" (Windows). : Most likely captured on an iOS device
Depending on where you encountered this specific filename, it may refer to one of the following: a specific website