You cannot simply "Set as Desktop Background" on a video file like you would a static image. You need a middleware program.
Beyond Static: Transforming Your Workspace with MoeWalls and Lively Wallpaper. Key Content: The Software Hook: How to use the "Lighter" software from MoeWalls.com or the open-source Lively Wallpaper on Microsoft Store to run .mp4 or .webm files. Customization Hacks: moewallscom work
"Moewalls is a gateway to the Steam Workshop. I found a wallpaper there, searched the name on Steam, and subscribed to the official version. That's the smart move." — u/SteamUser404 You cannot simply "Set as Desktop Background" on
Since Windows does not natively support video files as desktop backgrounds, you need a third-party application to "play" the wallpaper. Set Live Wallpapers For Your Desktop Using Free Software Key Content: The Software Hook: How to use
: Users can browse thousands of wallpapers across categories like Abstract, Anime, Fantasy, Games, Sci-Fi, and Pixel Art. Most files are available in high resolutions, including 1080p, 1440p, and 4K (3840x2160).