I have a video for website intro. I need it to be auto play .. its works fine on the desktop. but On IOS (Iphone4 and Iphone 6) Android (Samsung note 10 , note 1,2,3,4) Not working on all of these.
<iframe frameborder="0" style="width:100% !important;height:100vh !important;" width="100vw" height="100vh" src="//www.dailymotion.com/embed/video/kKhw1NdehXdXzhdjrJ5?autoplay=1&chromeless=0&quality=240&related=0&webkit-playsinline=1&ended=videEnded" allowfullscreen autoplay ></iframe>
this question has been answered here already: Dailymotion embedded player on iOS devices (HTML5)
Basically, mobile devices prevent videos from being played automatically, this is why it's not playing with your code. Those devices require an user interaction to first play the video.