HTML

html video tag play button overlay

button {
    background-color: #666;
    border: medium none;
    color: #fff;
    display: block;
    font-size: 18px;
    left: 0;
    margin: 0 auto;
    padding: 8px 16px;
    position: absolute;
    right: 0;
    top: 50%;
}

html video tag play button overlay

<button class="active">play</button>
<video id="banner-video" preload="auto" loop>
	<source src="https://static.videezy.com/system/resources/previews/000/002/719/original/cloudy-sunset.mp4">
</video>

html video tag play button overlay

video {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  min-width: 100%;
  min-height: 100%;
  z-index: -1;
  -webkit-transition: all 1s;
  -moz-transition: all 1s;
  -o-transition: all 1s;
  transition: all 1s;
}

html video tag play button overlay

$( document ).ready(function() {
var ctrlVideo = document.getElementById("video"); 
$('button').click(function(){
  if ($('button').hasClass("active")){
    
        ctrlVideo.play();
    
    $('button').html("Pause");
    $('button').toggleClass("active");
  } else {
    
        ctrlVideo.pause();
    
    $('button').html("play");
    $('button').toggleClass("active");
  }
});
});