Put a vimeo video into a hype on each breakpoint, 320, 640, 768 etc and export.
Resize browser down which makes hype use smaller breakpoint.
Now click fullscreen in the vimeo video and the fullscreen doesn’t work properly, no fullscreen video is show, instead the browsers gone fullscreen showing the website and the hype stuck in the top left corner. Have to press Esc to cancel is and the hype has lost it’s positioning still stuck in top left corner.
We currently use Vimeo so haven’t tried with YouTube but would imagine same effect. I think the breakpoint kicks in when browser goes fullscreen causing it to go bit funky.
should be nice on device because fullscreensize will be within current breakpoint.
so test on devices …
as far as i can see a workaround would be to script your own controls and logic to lead users to a separate (bigger sized) scene which dynamically loads the video … much efford