.mkv (Matroska Video), which supports multiple audio and subtitle tracks.
AMZN WEB-DL (Directly downloaded from Amazon Prime Video, ensuring high original quality). .mkv (Matroska Video)
The filename Crash_Course_S01E01_Faces_on_a_Billboard_1080p_AMZN_WEB_DL_HEVC.mkv indicates: 1080p (Full High Definition). .mkv (Matroska Video)