We are moving away from simple filenames and toward these "smart tags." In the future, keywords like "sone340rmjavhdtoday015909 min top" might be hidden in the file's background (Exif data), but for now, they remain a visible part of how the internet organizes its vast amount of video content.
: A specific production code often used in Japanese media (specifically the "S1" studio). sone340rmjavhdtoday015909 min top
(I can help you search for the source.)