Install a live wallpaper app from the Google Play Store
Open the app and grant the required permissions
Select the video you want to use
Trim or adjust the video if the app offers that option
Set the video as your live wallpaper
Go to your phone’s wallpaper settings
Choose Live Wallpaper or the app’s wallpaper option
Apply the video wallpaper to the home screen or lock screen
Use a video wallpaper app if your phone does not support video wallpapers natively
Keep the video short and optimized to reduce battery usage