Taking screenshots
Screenshots of the currently played file can be taken using the
'screenshot' input mode command, which is by default bound to the s
key. Files named mpv-shotNNNN.jpg will be saved in the working
directory, using the first available number - no files will be
overwritten. In pseudo-GUI mode, the screenshot will be saved somewhere
else. See PSEUDO GUI MODE.
A screenshot will usually contain the unscaled video contents at the end
of the video filter chain and subtitles. By default, S takes
screenshots without subtitles, while s includes subtitles.
Unlike with MPlayer, the screenshot video filter is not required. This
filter was never required in mpv, and has been removed.