Right and Left Arrow - seek the video forwards and back.
Up and Down Arrow - increase and decrease the volume.
M key - toggle mute/unmute.
F key - toggle fullscreen off and on.
Code Source
<!--Load skin, player and plugins-->
<link href="../videojs/skins/nuevo/videojs.min.css" rel="stylesheet" type="text/css" />
<script src="../videojs//video.min.js"></script>
<script src="../videojs//nuevo.min.js"></script>
<script src="../videojs//plugins/videojs.hotkeys.min.js"></script><!--Setup Video tag-->
<video id="player_1" class="video-js vjs-fluid" controls preload playsinline poster="images/poster.jpg">
<source src="//opencdn.b-cdn.net/video/demo_720.mp4" type="video/mp4">
<source src="//opencdn.b-cdn.net/video/demo_720.webm" type="video/webm">
</video>
<script>
<!--Initialize player + nuevo and hotkeys plugins-->
<script>
var player = videojs('player_1');
player.nuevo({
title: "Nuevo plugin for VideoJs Player"
});
player.hotkeys({
volumeStep: 0.1,
seekStep: 5
});
</script>
Hotkeys options are optional and easy to understand. volumeStep = step value to increse/decrease volume value. seekStep = step value to forward or backeard video in time.