The video block inside the Stashio Blocks list offer an upgrade from the default embed block from Gutenberg. With the Stashio Video Block you can embed YouTube videos to have a custom play button, and most importantly to have a CTA video which on click can open in modal/overlay style. For the fullscreen option you can also change the video overlay background color, the volume and even set it to autoplay. Note that because of browser limitations for autoplay option to work the video will be automatically be muted.
How this looks
Of couse, this is an actual video element showing a small video on how this element works.