You will need to install a user script manager extension to install this script.
This script allows to skip intros in nearly every html5 player.
Ctrl + Arrowkey = 85 Second skip
Arrowkey = 5 second skip
Ctrl + 5 = Activate 5 second skip for the active domain (Default: deactivated)
If the player is in an iframe make sure to click on it so that it becomes active.