The link is the player
Embedding a video usually goes like this. Open the platform, click Share, click Embed, copy the blob of HTML it hands you, paste it into your post. What you have just filed in your own archive is somebody else's markup: an iframe, sometimes a script, a couple of tracking parameters and a class name from a design system you don't use. And when the platform changes its embed path — they do — every post you ever wrote that way breaks on the same afternoon.
Here you paste the address you would send a friend.
Two of them, actually playing
A video, with a caption: