что не так?! what is wrong?!

Question

мне срочно нужно написать кое-какой код но... I urgently need to write some code but...

вот то что у меня:
Here's what I have:
<video>
<source src="https://m.youtube.com/watch?v=UJaXDRBuO6E">
</video>

Answer 1

Here is the fastest and easiest way to embed Youtube on your website.
Your video ....
https://code.sololearn.com/WAVx42GoTJcg/?ref=app

Answer 2

How can I make a full-screen video?

(I don't speak English very well)