Files from these sources typically focus on high compression and portability:
Sites like World4uFree often use compressed formats to make downloads faster for users with limited bandwidth.
This likely refers to the movie title or a specific "loaned" release category.
This is likely an abbreviation or a specific code for the film's title, possibly related to a specific Indian or regional release often found on such platforms.
Many media servers like Plex or Kodi can identify these files, but they usually recommend a cleaner format like Movie Title (Year).mkv for better library matching.