I want to make my form appear or lead the customer to the next page AFTER they watch my video. How do I do this?

You can add the Global Countdown widget to your form that will auto submit to next page after a pre-defined time. So you just need to set the timer to match how long your video is.

link: https://widgets.jotform.com/widget/global_countdown

You can test the demo form http://form.jotformpro.com/form/50038361316952

Hope this help. Let us know if you need further assistance.