Video CSS3 Effect

gistfile1.css

.vignette {
   opacity: 0.55;
   filter: alpha(opacity = 55);
   -o-transition: opacity 0.30s linear;
   -moz-transition: opacity 0.30s linear;
   -webkit-transition: opacity 0.30s linear;
    transition: opacity 0.30s linear;
}

.vignette:hover {
    -o-transition: opacity 0.30s linear;
    -moz-transition: opacity 0.30s linear;
    -webkit-transition: opacity 0.30s linear;
    transition: opacity 0.30s linear;
    opacity: 1.0;
    filter: alpha(opacity = 100);
}