Ok, so the bit about video in the link says this:
“Let’s say you embed a Youtube video as the content of the modal. Now, imagine the user intracting with the modal on the website. He clicks the toggle button, making the modal appear where he sees the Youtube video. Then he clicks the Youtube video play button to play the video.”
I would be ok with this, but it’s not what I see. It’s a video hosted on my server, so when I click the toggle, this is what I see:
It’s just a black square… if it was another play button, that would be fine, but as it is, I think the user would think it wasn’t working correctly. I’m assuming something has gone wrong here because I doubt you would add something that worked this way to your design cloud.