So I've figured out how to get a video embedded as per: How To: Embed a video in pop-ups in ArcGIS Online for a hosted feature service
I've got a process to add the necessary iframe code and video source to my layers and it works on the map and even autoplays.
However...the audio now plays twice, as if a second instance of the video is playing in the background about half a second later. I would appreciate some guidance - I hope it's a simple setting or URL parameter that I have overlooked.
This is the map in question: https://subtelforum.com/cablemap/
And this is what the iframe bit looks like:
<iframe src="https://www.youtube.com/embed/PAwUKXMFCVg?rel=0&fs=1&autoplay=1&playsinline=0" width="316" height="178" frameborder="0"></iframe>
Edit:
Ok, change the iframe code to the following (basically just added mute=1) makes the video autoplay correctly, and without double audio.
<iframe src="https://www.youtube.com/embed/PAwUKXMFCVg?rel=0&fs=1&autoplay=1&mute=1&playsinline=0" width="316" height="178" frameborder="0"></iframe>
The only downside is this makes the user have to manually unmute the audio, but I'm not terribly concerned about that.
