: In research, supplementary files for journals like Nature often include numbered video clips (e.g., Supplementary Movie 1-5 ) to demonstrate experiments like hydrogel movement or chemical reactions.
: Cyclists and hobbyists often use numbered MP4 files (e.g., from a GoPro or Insta360 ) when documenting rides or technical maneuvers. Dod (136) mp4
(e.g., a specific database, a training portal, or a personal device) : In research, supplementary files for journals like