H01032331.mp4 -

: The .mp4 extension (MPEG-4 Part 14) is a standard digital multimedia container used to store video, audio, and subtitles.

: If you are using media servers like Plex or Jellyfin , note that they may try to "match" this generic name to a movie; if it's a personal video, you may need to rename it manually to prevent incorrect metadata scraping. h01032331.mp4

How do I get a video title to match it's filename? - Microsoft Learn if it's a personal video