Nobody answered you after all that time ? Weird!
Here is how, and an exemple of how i used it (see here: www.kassyarts.com )
The picture is a textured white gradient, that i’ve put as the background of a strip, and i’ve added the strip on top of my Hero-page strip, to smooth out the bottom video edge
(I was personnaly looking on a way to change the opacity of a strip that is appearing on every page, but i want the opacity to be a 0% only on the home page. I’ll try via coding !)