Use a live wallpaper app from the Mac App Store or a trusted developer
Choose a wallpaper source that offers 4K or higher resolution files
Download 4K video wallpapers in compatible formats such as MP4 or MOV
Set the wallpaper through the app’s desktop wallpaper settings
Use macOS Dynamic Desktop for built-in moving wallpaper options
Convert high-resolution videos to a supported format if needed
Make sure the display resolution matches or exceeds 4K for best quality
Enable wallpaper scaling to fill the screen without stretching
Disable low-power mode if the wallpaper stutters or drops frames
Use an M1, M2, M3, or newer Mac for smoother playback
Keep the wallpaper file on local storage instead of cloud storage
Check that the app supports Retina and 4K displays
Use a high-refresh-rate display if available for smoother motion
Update macOS and the wallpaper app regularly
Avoid heavily compressed files to preserve 4K quality