How to Add Product Video to the Product Gallery?

In order to add the product video to the product gallery, proceed as follows:

while editing your product, use the "Product Video" metabox

Here you can select between following video types:

• YouTube Video
• Vimeo Video
• Self-Hosted Video

You can enable video autoplay option globally for all products by going to Theme Options - WooCommerce - Product, scrolling down to the "Product Gallery" section and enabling "Video Autoplay" control:

You can enable video autoplay for separate products by using the Page Options of the respective product and going to Product Layout - Custom Settings, scrolling down to Product Gallery section and enabling "Video Autoplay" control: