Image cropping to AVCaptureVideoPreviewLayer rect

UIImage+Crop.swift

extension UIImage {
    func crop(toPreviewLayer layer: AVCaptureVideoPreviewLayer, withRect rect: CGRect) -> UIImage {
        let outputRect = layer.metadataOutputRectConverted(fromLayerRect: rect)
        var cgImage = self.cgImage!
        let width = CGFloat(cgImage.width)
        let height = CGFloat(cgImage.height)
        let cropRect = CGRect(
            x: outputRect.origin.x * width,
            y: outputRect.origin.y * height,
            width: outputRect.size.width * width,
            height: outputRect.size.height * height)

        cgImage = cgImage.cropping(to: cropRect)!
        let croppedUIImage = UIImage(
            cgImage: cgImage,
            scale: self.scale,
            orientation: self.imageOrientation
        )

        return croppedUIImage
    }
}

Just what I was looking for, thanks!

same for me

Just what I was looking for, thanks!

same for me +100 to his karma :D