G4_01255.mp4 -

If this is a file you found on your device or a shared drive, you can try checking the (right-click > Properties on Windows, or Get Info on Mac) to see the "Date Created" or "Origin," which might give you a clue about where it came from.

: Many DVR/NVR systems use this naming convention (e.g., Group 4, Clip 1255). g4_01255.mp4

: Sometimes associated with specific archives or forum attachments. If this is a file you found on