I don\'t know if this is possible, but I would like to cut holes in an opaque wrapper set to the height and width of the window to a layer of video beneath it u
You could use a transparent png or svg to create the shape overlay, with the blank areas in effect becoming the mask or you could use the clip or mask property in CSS.
Here's a jsFiddle example using svg.
External JS/CSS:
HTML:
CSS:
#wrapper {
position: absolute;
height: 100%;
width: 100%;
z-index: 5;
}
#videoDiv {
position: absolute;
z-index: -5;
}