FFPLAY shortcuts:
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ESCAPE ("Select") = quit
LSHIFT ("X"); f = fullscreen
SPACE ("Y"); RETURN ("Start")= pause
LCTRL ("B"); m = mute
RSHIFT/RALT ("R3/L3"); 0/9 = increase/decrease volume
LALT ("A"); s = step to next frame
LEFT/RIGHT (-) = Seek backward/forward 10 seconds.
DOWN/UP (-)= Seek backward/forward 1 minute.
PAGEUP/PAGEDOWN ("L2/R2")= Seek to the previous/next chapter. If there are no chapters seek backward/forward 10 minutes.