Wallsmith › Guides

How to make an ultrawide (21:9 or 32:9) wallpaper from any video

Almost every video is 16:9, but an ultrawide monitor is 21:9 or even 32:9. Set a 16:9 video as your wallpaper and you get black bars, a stretched picture, or a crop that cuts off the part you liked. You can choose exactly how it fits instead.

Your options

1. Crop (fill). Fill the whole screen and pick which band of the video stays visible. Best for scenery with nothing important at the very top or bottom.
2. Whole picture over a blurred fill. Keep the entire video in the middle and fill the sides with a soft, blurred copy of it. Nothing is lost, and it looks far better than black bars.
3. Upscale while you're at it. A crop throws away part of the picture, so the rest is enlarged more. AI upscaling keeps the cropped wallpaper sharp on a 3440×1440 or 5120×1440 screen.

How to do it in Wallsmith

1. Open your clip. Wallsmith already knows your monitor's shape; it's the Screen choice under Screen shape on the Frame tab. You can also pick 21:9 or 32:9 yourself.
2. Under Fit, choose Fill to crop, then drag the box on the preview to choose what stays visible. Use Zoom to go in closer.
3. Or choose Blur fill to keep the whole picture, or Fit for plain black bars.
4. On the Enhance tab, set Output size to Screen and pick an AI model, then export.

Free or Pro? Cropping for any screen shape is free, up to 1080p / 1200p tall, which includes 2560×1080 ultrawides. 3440×1440, 5120×1440, the Best AI model and Blur fill are part of Pro ($5 once).