210 Mkv — Ar Scope

The presence of indicates this is likely a video file, possibly a recording made through a digital scope or a high-definition movie file:

: A flexible open-standard video container that can hold multiple video, audio, and subtitle tracks. AR Scope 210 mkv

: In cinematography, "Scope" refers to the 2.35:1 or 2.39:1 widescreen aspect ratio used for major films. 3. Augmented Reality (AR) Optics Converting FFV1/MKV to v210/MOV - BAVC Media The presence of indicates this is likely a