The problem with the mobile version

Hello colleagues)
The problem with the mobile version.
with the background video figured out, you need to do GIF for phones.
And what about the photo that is fixed on the background,
with the computer everything is fine, but when I open it from the phone it does not work

https://preview.webflow.com/preview/rimas?preview=f755b8141f640c956a8bdd749f94f8b0