Groups like these are part of a subculture dedicated to archiving and sharing global entertainment, including Bollywood hits , international cinema, and television series.
This likely refers to the "scene" or community dedicated to distributing high-quality media in the Matroska (.mkv) thevoyeur1994 18720px264worldmkv
Given this, I will interpret your request as: Groups like these are part of a subculture
: This stands for Matroska Video , a versatile container format that can hold an unlimited number of video, audio, picture, or subtitle tracks in one file. Digital Media Archiving and Identification including Bollywood hits