Background animation for picture card

Hello, is it possible to make background animation in picture card? I would like to cut upper part of my png picture(to make it invisible) and to see animated weather behind it… I am trying but somehow when I add picture, part that should be invisible shows as black, and no animation can be seen…
The rest is work in progress, but I want instead of dark sky, animated weather…

I have a solution. No need to answer me :slight_smile: