add a youtube video url in video tag code example

Example 1: how to add a video playing on a html page

<iframe width="420" height="315"
src="https://www.youtube.com/embed/tgbNymZ7vqY">
</iframe>

Example 2: HOW TO USE A video on a html website from youtube

<iframe width="560" height="315" src="https://www.youtube.com/embed/thatthingonvideourl" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>