YouTube iframe embed - full screen

Question

I have a form that is iframed into a web page. Upon completion of the form, a YouTube video is displayed from using iframe embed.

When I enter full screen mode of th

Answer 1

Putting allowfullscreen inside iframe tag without setting it to true is already deprecated. The updated answer for this issue which is fullscreen is not available with embedded YouTube videos is to set allowfullscreen to true inside tag:

Tested and working for all browsers without issues.