The specific filename you referenced ( mission-majnu-2023-hindi-720p-web-dl-esub-dudefilms-in-mkv ) indicates several technical characteristics:
Based on the filename you provided, Release Date: January 20, 2023 Genre: Spy Thriller / Action / Drama mission-majnu-2023-hindi-720p-web-dl-esub-dudefilms-in-mkv
Includes "English Subtitles" muxed into the file or provided as a sidecar file. Release Date: January 20
The Matroska Multimedia Container. It is a flexible format that allows multiple audio and subtitle tracks to be stored in a single file. and Kumud Mishra. Technical File Features
Sidharth Malhotra, Rashmika Mandanna, Parmeet Sethi, and Kumud Mishra. Technical File Features