: This usually denotes the magnification range . A 2-10x scope means the image can be magnified from 2 times to 10 times the size seen by the naked eye.
The presence of indicates this is likely a video file, possibly a recording made through a digital scope or a high-definition movie file: AR Scope 210 mkv
: A flexible open-standard video container that can hold multiple video, audio, and subtitle tracks. : This usually denotes the magnification range