Hi @CInno,
Thank you for the clarification, to do that, you need two Bars (for the fullscreen video and menu), setup the first bar like this:
This will make the bar fullwidth with height responsive to the slider.
On the second bar assign an ID menubar
We will going to use this ID later on the slider settings, to offset the height of this bar so it will be minus to the height of the fullscreen slider, resulting for the Slider and Menu bar to fit on the above fold screen.
Now on your slider settings, set the Slide Layout to Full-Screen
This is the option that will make your slider full-screen.
Now to offset the height of the menu bar. Still, on Slider Settings find the option Increase/Decrease Fullscreen Height and enter #menubar
(yes, with the number sign), I will look a little bit off if you preview it as a login user because of the black Wordpress bar that adds height to the header.
Don’t forget to turn On the Sticky Bar option of the second, so when you scroll past the video the second bar will stick to the top.
How you create your slider and style the second bar will be now up to you. If you need a sticky bar to have a different styling or layout from the initial menu bar, then please create a 3rd bar that will serve as the sticky bar.
Hope it helps,
Cheers!