I started to use it on linux a few years ago.
Now its on every device, even on my android tablet. Its perfect. Minimalistic, sane defaults, fast and just works.
It can even play natively over ssh. Its awesome
> mpv sftp://mit@nyx/home/mit/Work/merged.mp4
Recently I needed a hotkey to rotate a video (which seems not like any player can easily do this; for mpv it was a 'r cycle_values video-rotate "90" "180" "270" "0"' in the in input.conf)
replies(1):