Ensure the file isn't a "double extension" (e.g., Ajb06737.mp4.exe ), which could indicate malware. If you don't see the .mp4 part, enable "File name extensions" in your computer's view settings. 3. Safety Warning
The recording date/time metadata, which might reveal the original device name.
Use VLC , as it contains a vast library of codecs and can often play corrupted or uniquely encoded MP4s.
If you received this file from an or found it on a random USB drive, do not open it .
If you downloaded it from the web, check your browser history around the time the file appeared.
Since "Ajb06737" is not a standard naming convention (like "IMG_1234" or "VID_2024"), check where you found the file: