G078.mp4 -

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

Sometimes dragging an MP4 into a Chrome or Safari window will trigger a built-in player that works better than system defaults. 3. Fixing a Corrupt "g078.mp4" g078.mp4

The filename is a generic label often used by digital cameras (like Sony or Panasonic), dashcams, or automated security systems. Right-click the file > Properties > Details