A file downloaded directly from a streaming service (like Netflix or iTunes). It is considered "untouched" quality, as it hasn't been re-encoded from a lower source.
The name of the "release group" or individual who ripped and distributed this specific version of the file. Unlocked.2022.PL.WEB-DL.x264-K83.mkv
The "PL" in the filename likely indicates a Polish (Polski) language track or hardcoded subtitles. Technical Breakdown of the File Name WEB-DL A file downloaded directly from a streaming service