F - 1046.31.mp4

: These identifiers often act as accession numbers for specific digitized film clips.

If this refers to a specific video from a community, an ARG (Alternate Reality Game), or a particular private collection , providing a bit more context—such as where you encountered the name or what the video depicts—would help in tracking down its origins.

: Raw video files in stock footage libraries or film production pipelines.

Filenames with this structure (a letter prefix followed by a numeric string) are typically used for: