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How to make embedded video only have audio when fullscreen + hover play

Hi,

I was wondering how to make the embedded video only have audio when it’s fullscreen (which means muted while loading, because I have it autoplayed)
Here’s the view-only link:
https://preview.webflow.com/preview/eazydoc?utm_medium=preview_link&utm_source=designer&utm_content=eazydoc&preview=d27e8c3c5ca579caa8403272818e4439&pageId=5da73f8a26958981c12345ee&mode=preview

for now, I have the ‘muted=1’, because I didn’t find out how to write the coding part.
I also tried ‘background=1’, then I lost the choice of making it fullscreen.

I have the idea that it should be sth like the below:

if (fullscreen) {
muted = 0;
}
else {
muted = 1;
}

would love to know how this should be wrote in the embedded code part.

And second question is:
Is it possible to make it play after hover?

Thanks!