: The file extension. Matroska Video files are "containers" that can hold multiple video, audio, and subtitle tracks in one file. Technical Requirements for Playback
: Stands for High Efficiency Video Coding (also known as H.265 ). This is a modern compression standard that allows the file to be much smaller than older formats (like H.264) without losing significant image quality. villain-720p-hevc-hd-desiremovies-codes-1-mkv
: Likely a sub-tag used by the uploader for internal organization or a specific mirror site. : The file extension