G078.mp4 -

Right-click the file > Properties > Details . Look at the "Origin" or "Video" sections.

Right-click > Get Info . Look under "More Info" for the device name or software used to create it. 2. How to Open "Mystery" Files g078.mp4

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