Вставка видео на сайт с “custom button”

var yt_frame = document.querySelector('.video__player'), 
	video_placeholder = document.querySelector('.video__placeholder'); 
   
  video_placeholder.addEventListener('click',play); 
 
function play(){ 
	yt_frame.contentWindow.postMessage(JSON.stringify({ 
                'event': 'command', 
                'func': 'playVideo', 
                'args': [] 
            }),'*'); 
          video_placeholder.style.display="none";   
}

.video { 
  position:relative; 
width:400px; 
height:400px; 
} 
 
.video__player { 
  width:100%; 
  height:100%; 
} 
 
.video__placeholder { 
  position:absolute; 
  width:100%; 
  height:100%; 
  background:red; 
}

<div class="video"> 
<div class="video__placeholder"> 
  Контент 
</div> 
<iframe class="video__player" src="https://www.youtube.com/embed/vYrIoMREDQs?enablejsapi=1" frameborder="0" allowfullscreen></iframe> 
</div>