G8643.mp4 -

: Older point-and-shoot cameras often used prefixes like "G" (for Group or Gallery) followed by a four-digit sequence.

: Automotive cameras often use sequential numbering for saved "event" files. g8643.mp4

: While .mp4 is a video format, "double extensions" (e.g., g8643.mp4.exe ) can hide malicious software. : Older point-and-shoot cameras often used prefixes like