iframe autoplay

1<!-- 
2first add ?autoplay=1 to your video url
3then add allow='autoplay' attribute to your iframe element
4-->
5<iframe src="https://www.youtube.com/embed/dQw4w9WgXcQ?autoplay=1" allow='autoplay'></iframe>

1<iframe id="ytplayer" type="text/html" width="640" height="360"
2  src="http://www.youtube.com/embed/M7lc1UVf-VE?autoplay=1&origin=http://example.com"
3  frameborder="0"/>

1<iframe width="560" height="315" src="https://www.youtube.com/embed/videoseries?list=PLQGSXoAiT2W4W8D3397nl4OB_GxfOmJk9" allowfullscreen></iframe>

1<iframe src="http://jx.quickso.cn/jiexi.php?url=视频地址" width="100%" frameborder="0" allow="autoplay; encrypted-media" allowfullscreen></ifra