.contenedor-video {
    width: 100%;
    max-width: 1300px;
    height: auto;
    min-height: 250px;
    max-height: 460px;
}

li.video{
	position:relative;
	height:460px;
}

.contenedor-video iframe, .contenedor-video object, .contenedor-video embed { 
	position: absolute; 
	top: 0; 
	left: 0; 
	width: 100%; 
	height: 100%;
}

@media only screen and (min-width: 320px) and (max-width: 1024px){
	li.video{
		height: auto;
	}
}