You may not know that YouTube’s embedded player supports keyboard shortcuts. You can use various keyboard shortcut to control player functions. Here are list of keyboard shortcut available with YouTube player.
TAB Key – Allow you to move from one control to another in left to right order. Press Enter key to activate control when control have focus.
SPACE Key – Pause and Resume video playback.
Right Arrow Key – Fast Forward 5 seconds
Left Arrow Key – Replay/backward 5 seconds
Up and Down Keys – Adjust volume level
Home Key – Seek to the beginning
End Key – Seek to the end of the video
Numbers 1 to 9 Keys – Seek to the 10% to 90% of the video
Number 0 key – Seek to the beginning of the video