I don't know where is the tag for mobile. 

Thank you very much! I'm happy. On desktop version is OK, but on mobile version does not play automatically. Is there anything to add for mobile?

Thank you for the reply. Where should I add exactly?

Hello, I insert my own video in the product page.<video controls="controls" style="max-width: 100%; height: auto;"><source src="https://cdn.shopify.com/videos/c/o/v/e7a656e061e448f38f6a6483e472b2d6.mp4" type="video/mp4">Your browser does not support ...