: If you are comfortable with a command-line interface, ffprobe (part of the FFmpeg suite) can identify if the file is a standard video or actually another format like an Apple Voice Memo that has been mislabeled.
If you are looking for a "piece" or a way to understand what is in this file without playing it, here are the tools and methods to identify its details: How to Identify the File's Content Ajb08445 mp4
: On Windows, right-click the file, select Properties , and go to the Details tab. On macOS, open the file in QuickTime Player and press Command+I to open the Movie Inspector . Common Uses for Similar File Names : If you are comfortable with a command-line