CS50 Video Player
        Shortcuts
        Before using a shortcut, click at least once on the video itself (to give it "focus") after closing this window.
        Play/Pause spacebar or k
        Rewind 10 seconds left arrow or j
        Fast forward 10 seconds right arrow or l
        Previous frame (while paused) ,
        Next frame (while paused) .
        Decrease playback rate <
        Increase playback rate >
        Toggle captions on/off c
        Toggle mute m
        Toggle full screen f or double-click video