Cislunar let you embed any video in your website easily, if the video is hosted online.
Make a button using the syntax given below and replace data-video-src attribute with the video path. Yep, That's it!
<button type="button" class="btn cl-btn-square-color-1" data-toggle="modal" data-target="#videoEmbed" data-video-src="https://path/to/video">Watch Video</button>