How to add a blur effect to a view such that the subview is not affected

i have a view. on its, layer i have a videolayer. now i want to blur the video layer, which is done using blureffect and visualeffect view , but i want to have another view on top of the visual efffect which should not be affected by the blur . what should i do?

code:

 let blurEffect = UIBlurEffect()
    let blurEffectView = UIVisualEffectView()
    blurEffectView.frame = self.view.bounds
    

    view.addSubview(blurEffectView)
       blurEffectView.autoresizingMask = [.flexibleWidth, .flexibleHeight]
    
   
    blurEffectView.contentView.addSubview(focusview)
   blurEffectView.effect=blurEffect

focusview is a uiview and is the rectangle. how can i make it clear?

This is how my app looks like. I want the white rectangle to be clear.