第一步:打开youtube视频 点击分享按钮
第二步: 点击尖括号按钮
第三步 :复制youtube视频地址 复制 src="中间标黄的视频地址即可"
<iframe width="560" height="315" src="https://www.youtube.com/embed/TEgwtFCXBTc?si=gl4kaUxyQJdxszEs" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" allowfullscreen></iframe>