: Many generic or "G-Sensor" equipped dashcams use a "G" prefix to denote protected files (videos recorded during an impact or sudden braking).
: Certain DJI or Autel flight logs or cached video previews occasionally use similar alphanumeric strings. How to Review the File g4_0139.mp4
: Right-click the file and select Properties (Windows) or Get Info (Mac). Look at the "Origin" or "Camera" section to see what device created it. : Many generic or "G-Sensor" equipped dashcams use