Background Video autoplay not working on live (works in preview mode)

I have background video component with a mp4 inside, settings set to autoplay

It works when I use preview (the eye icon)
but when I publish to live, it just freezes on first frame & does not play at all.

Whats wrong?

Hi @cgtk

What is the live url, so we can see the non-preview version.

Video play as expected on major browsers, here is the link

Yeah, it looks good to me