mpv is a free (as in freedom) media player.
You're supposed to use the keyboard to interact with the media; just press the correct button on your keyboard.
You can consult the manual, either online or locally with man mpv
.
Here is my own curated summary:
p / SPACE - Pause/Unpause
LEFT/RIGHT - Seek backward/forward 5 sec
UP/DOWN - Seek forward/backward 1 min
ENTER - Go forward in the playlist
q - Stop playing and quit
[ and ] - Decrease/increase current playback speed by 10%
BACKSPACE - Reset playback speed to normal
# - Cycle through the available audio tracks
Ctrl +/- - Adjust audio delay by +/- 0.1 seconds
m - Mute sound
v - Toggle subtitle visibility
j and J - Cycle through the available subtitles
x and z - Adjust subtitle delay by +/- 0.1 seconds
r and t - Move subtitles up/down
s - Take a screenshot
f - Toggle fullscreen
1 and 2 - Adjust contrast.
3 and 4 - Adjust brightness.
5 and 6 - Adjust gamma.
7 and 8 - Adjust saturation
Make a shortcut command or something to display this. Or don't.