Today is even impossible to imagine a good product detail page without product video/s. In Magento 2, adding videos to the product details page is quite easy. The major problem is in most cases with an initial setup. Most of the product videos already exist online, either on youtube.com or vimeo.com. In the first case, it’s the most popular video publishing platform and for vimeo.com we can say it is more or less dedicated to professionals and photo/video enthusiast.
Google, company behind youtube, set few rules regarding sharing and embedding videos to other domains, in our case our online store. They require to have enabled youtube API key if you want to use embedding youtube videos beyond simple grabbing embed code from youtube videos page.Read more