So what I'm trying to do is have fullscreen video across my website. But I would like to auto play a youtube video and automatically in fullscreen (The size of the browser window). My site navigation is left and right arrows that slide from page to page. Then up and down arrows that scroll up and down each page.
But the only thing I'm trying to get done is autoplay a youtube video in fullscreen, again, the size of the browser window. Or am I going to have to host the video myself? Which may be easier, but will take up bandwidth that I'll have to pay for. Anyway thank you in advance for your help, cheers!
This was pretty well answered over here: How to make a YouTube embedded video a full page width one?
If you add '?rel=0&autoplay=1' to the end of the url in the embed code (like this)
<iframe id="video" src="//www.youtube.com/embed/5iiPC-VGFLU?rel=0&autoplay=1" frameborder="0" allowfullscreen></iframe>
of the video it should play on load. Here's a demo over at jsfiddle.
来源：https://stackoverflow.com/questions/22429866/embed-youtube-videos-that-play-in-fullscreen-automatically