How Do You Set a Live Wallpaper on Windows 11?
Set an MP4 or MOV video as a Windows 11 live wallpaper with a compatible wallpaper app and the right playback settings.
Windows 11 can display pictures and slideshows by itself, but most stable public builds still need a wallpaper app to run your own video continuously behind the desktop icons. A common free option is Lively Wallpaper from the Microsoft Store. Wallpaper Engine is a paid alternative. The labels differ between apps, but the setup is similar.
Set an MP4 with Lively Wallpaper
- Install Lively Wallpaper from its official Microsoft Store listing or project website.
- Open the app and choose Add Wallpaper or the plus button.
- Browse to the downloaded MP4, or drag the file into the app window.
- Select the imported item and apply it to the chosen display.
- Open the display settings inside Lively if you want to span, duplicate, or assign wallpapers per monitor.
Keep the original file in a permanent folder. If you import a clip from Downloads and later delete or move it, the wallpaper app may no longer find it. A folder such as Videos/Wallpapers is easier to maintain.
Choose useful playback settings
Start with fill or cover mode on a 16:9 display. This removes bars but crops the edges if the video and screen have different aspect ratios. Use fit mode when seeing the whole frame matters more than filling every pixel.
Turn on pause rules for full-screen applications and games. Good wallpaper apps can stop decoding while another program covers the desktop. On a laptop, set playback to pause on battery power if runtime matters. Leave audio muted unless you deliberately want wallpaper sound.
A 4K source is appropriate for a 4K display, but a 1080p version may run more smoothly on integrated graphics. If playback stutters, test the same clip at a lower resolution or frame rate before assuming the app is broken. The live-wallpaper lag checklist explains the main causes.
What about native Windows video wallpaper?
Microsoft has tested native video-background support in Windows 11 preview builds. A preview feature is not the same as a feature available to every stable installation, and its file support or release status can change. Check your own Settings > Personalization > Background menu. If it offers video files, follow the built-in picker. If it only offers Picture, Solid color, Slideshow, and Windows spotlight, use a trusted wallpaper app.
Avoid unofficial instructions that tell you to enable hidden feature IDs unless you already use Windows Insider builds and accept their risks. Third-party wallpaper software is easier to remove and does not require altering experimental Windows flags.
Check the result
Return to the desktop and watch at least two complete repeats. Look for a freeze at the loop point, incorrect scaling, or unusually high GPU activity in Task Manager. Then open a full-screen app and confirm that your pause rule works. The wallpaper should resume after you return to the desktop.
For files from Unique Live Wallpaper, download the H.264 MP4 for ordinary desktop use. Alpha-ready ProRes MOV files are designed primarily for compositing and can be unnecessarily large for a Windows background.