Hello,
1) Manage breakpoints and the grid width/height https://www.sliderrevolution.com/faq/responsive-content/ or change slider layout to full-width if you want full-width.
2) Manage slider animation timing https://prnt.sc/1szh3u1
3) You can use video layer or video on background https://www.sliderrevolution.com/faq/video-content-mobile/
4) https://www.sliderrevolution.com/manual/adding-and-configuring-audio-layers/
Regards