Alex4D Transparent Blur
This item / tutorial is available from the Creators website using link below
A free Final Cut Pro X effect that adds an iOS 7-style overlay onto clips which is used as a text background.
Titles that show a modified part the clip in their backgrounds momentarily draw the audience's attention towards their text before attention returns to the subject of the shot. It slides an area from the bottom, top, left or right edge of the screen. The area is a blurred, reduced-contrast version of the clips it overlays.