Autoplay for embedded Youtube videos in Storyline

Note that if you are using Chrome, which a lot of folks use, you have to add &mute=1 to the embed code. I just had to dig on this same problem today - Chrome updated their policies. 

<iframe width="560" height="315" src="https://www.youtube.com/embed/vqIvJT9x9bo?&mute=1&autoplay=1" allowfullscreen></iframe>

Note that this does work on Chrome (and you don't need all the other junk they give you in the embed code). To get the ads not to show up, you can add a loop to the video to just keep playing, which I had to do today in Storyline as well. The solution is to add a playlist with the same ID as the video. You can also remove the controls if you like. Here is the code with those components. 

<iframe width="560" height="315" src="https://www.youtube.com/embed/vqIvJT9x9bo?&mute=1&autoplay=1&controls=0&loop=1&playlist=vqIvJT9x9bo" allowfullscreen></iframe>