@burnout426 i believe i followed all the steps, it looks like
[Info]
name = name
author = author
url =
version = 1

[Start Page]
background = video.webm
position = center center
title text color = #FFFFFF
title text shadow = #000000
first frame image = first_frame_start_page.jpeg

I've read from posts that Opera takes animated/video wallpapers for the background as long as it's a zip with 3 files:

• persona.ini file
• video.webm
• first_frame_start_page.jpeg

However, uploading the zipped folder to Opera doesn't do nothing. I click "Open" through the finder popup and nothing happens. Can anyone advise on how to fix this issue?
(I'm on Mac, using Opera GX)