G078.mp4 -

If your standard player won't open it, the file might use a specific "codec" (a way of compressing video).

YYYY-MM-DD_Event-Name_Location.mp4 Example: 2024-05-12_Hiking_Grand-Canyon.mp4

Once you know what’s in the video, rename it immediately to prevent it from getting lost in a sea of generic names. A helpful format is: g078.mp4

Right-click > Get Info . Look under "More Info" for the device name or software used to create it. 2. How to Open "Mystery" Files

Check the to see where it came from. This helps you determine if it’s a precious memory or junk: If your standard player won't open it, the

Use a free tool like Untrunc or Fix.video . These tools look at a healthy file from the same camera (like g077.mp4) to rebuild the headers of the broken one. 4. Better Naming Habits

The filename is a generic label often used by digital cameras (like Sony or Panasonic), dashcams, or automated security systems. Look under "More Info" for the device name

Generic filenames are common for dashcams. If a dashcam loses power during an accident, the file (g078.mp4) might be "unfinalized" and unplayable.