We have used fancybox 3 for popup video and images. You can popup your image/video by adding data-fancybox in your any a tag and can provide the link of your video/image in href attribute.
<a data-fancybox href="http://www.youtube.com/watch?v=opj24KnzrWo">
<i class="tf-ion-play video"></i>
</a>
For more details you can see the documentation of fancybox 3.