Use this software for running .mp4 files as your desktop wallpaper - LINK
4K Demonslayer ANime Live Wallpaper is a fusion of a screensaver and wallpaper. Similar to regular wallpaper, it functions as a desktop background that only appears when your workspace is vacant, with no program windows obstructing it from view. You can take advantage of it to rejuvenate your outdated PC desktop with these innovative live wallpapers. Feel free to use them.To setup video loops as your desktop wallpaper you need to download Lively Wallpaper Software by rocksdanister or any other similar software from our page.