Download the latest release from the releases page.
It can be passed directly using the --script option when launching mpv.
mpv video.mp4 --script=mpv-cheatsheet.jsor you can save the file in a scripts subdirectory in the mpv configuration directory (usually ~/.config/mpv/scripts/ or C:\Users\<USERNAME>\AppData\Roaming\mpv\scripts; create one if it doesn't exist) and mpv will launch the script every time. Learn more.
Press ? to bring up the cheatsheet.
direnv allow
make
make install # copies built script to ~/.config/mpv/scripts/
Version numbers follow the format v${mpv-version}.${script-version}
where script-version is a single number that resets to 0 when mpv-version
is bumped.