I want my wallpaper to be a side-scroll of Super Mario World Yoshi's Island 1. Once the wallpaper scrolled all the way over, it would seamlessly loop back to the start.
Is there a program, or XML, that would accomplish this for me? I am using GNOME Shell.
The script has been updated to match requirements in this question : https://askubuntu.com/a/840381/295286
Transition and duration were made optional and having default values.
-soption is also added for sizing of wallpapers ( same as Tile, Scale, Stretch options from System Settings ).
Just like I said in the comments, you would have to cut down the image into even sized or overlapping pieces and create a slideshow for it. I don't know the license of that specific image that you want, so I will leave it up to you to cut it(Hint).
However, here is an animated wallpaper generator script that I have written. Usage is very simple. As shown by
Also available on GitHub