091522_001-1pon.mp4

The first segment almost certainly represents a date: . Professional file naming conventions often use MMDDYY or YYMMDD to ensure chronological sorting in digital folders. 2. The Sequence Number: 001

Are you trying to track down the origin of this specific file, or 091522_001-1pon.mp4

The -1pon tag is less standard but often refers to one of the following: The first segment almost certainly represents a date: