At the nine minute mark you get a perfect view of the wiper motor (Also with the screenshot above! How convenient). It is the device at the top middle of the back of the engine compartment.
But are you sure it's the motor? Turn the ignition on but do not start the van. Turn the wipers on and lean into the cowling (the vents above the hood). Can you hear the wiper motor running?
Yes? You need a new wiper bushing, not too hard to do and that video shows you how.
No? You need to make sure the wiper motor is getting power before attempting replacement. If you cannot check for this then you might need a mechanic.