Autoplay Video needs option to be muted, so Chrome does not block it

[btidwellmdc]

As of Chrome M66, autoplay videos need to have the option to be muted if they're going to be autoplayed:

https://developers.google.com/web/updates/2017/09/autoplay-policy-changes

Having the option to send the "muted" class to the video player from the frontend would be optimal for full-screen background videos.

[marcperel]

Thanks @btidwellmdc we are implementing this fix pretty soon, starting with force muting videos for Chrome.

[schmuckinsurance]

I am still experiencing issues with YouTube background vids in Chrome. Does not autoplay.