Samsung has greatly improved the software experience for its Galaxy smartphones and tablets over the last few years. One UI today is one of the best Android skins on the market, far from being the worst during the TouchWiz days. It offers a host of additional features you won’t get with other OEM Android skins, like the ability to easily set videos as lock screen and home screen wallpapers without requiring third-party apps. If you’ve just bought yourself a new Galaxy S23 series device and want to set up a video as a lock screen wallpaper, we’ve got you covered. Follow the step-by-step instructions below to set up a video lock screen on your Samsung device.

XDA
https://www.xda-developers.com/how-use-video-lock-screen-samsung-device/