<div class="media_box embed video_box full-dimensionsundefined" data-name="youtube">
<iframe width="560" height="315" src="https://www.youtube.com/embed/1fIVWgK21Tg" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
</div>
FONTE: R7