hands on If you're tired of staring at the same old static wallpapers in Windows 11, there's help on the way. Microsoft has just added support for animated video backgrounds in the latest Insider builds of its popular operating system, heralding their likely appearance in a production update soon.

The hidden capability, which was first spotted by feature-finding guru phantomofearth, works with any MP4 or M4V video file and adjusts it to fill your screen. When I chose a video I had shot in portrait mode, the system cropped my video so that it would take up my entire 4K monitor, without skewing the image.

There seems to be no practical limit on the size or length of videos. I played through an entire 4K 60 fps nature video that was five and a half minutes long and close to 1 GB in file siz

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