This is likely an abbreviation for a specific title or series. In many online circles, "MAS" might refer to a specific show or film title, while "1P1" typically denotes "Part 1" or "Episode 1."
Legitimate uses include:
If you manage a media library (legal), follow this best-practice naming convention: MAS1P1 -2025- Www.HDKing.Men 720p HEVC HDRip AA...
Good naming improves media server compatibility (Plex, Jellyfin, Kodi) and preserves metadata. This is likely an abbreviation for a specific