Large-scale video datasets (like Kinetics or Moments in Time) use similar short codes to label clips.

CCTV and dashcams often export files with alphanumeric strings representing the camera ID and sequence.

The filename appears to be a generic system-generated or camera-specific name that does not correspond to a publicly recognized or viral video. Because this name is highly specific to a private file or a particular dataset, there is no public "report" or information available for it in general web databases. g4_0186.mp4

Devices like GoPro or DJI often use sequential naming conventions (e.g., "G" for GoPro, followed by chapter or file numbers).