I do not know about any video, but it is pretty straight forward.
If you are interested in how to do it, with the right tool to relieve the tension, you just pull the belt off and replace it. There are instructions in this forum. Just keep your fingers out of the way, and it helps to have a helper to remove the belt while you hold off the tension. You might take a digital picture beforehand in case you need a reminder about how the belt was installed before you pulled it off. Some auto parts stores will loan you the tool, but some do it with a wrench. Good luck. Tom