As of 2018, Google Chrome and Safari blocked "autoplay" features for videos with sound. An experimental override feature exists under chrome://flags (typed into the web browser). The user may search for "autoplay policy" and switch from "default" over to "No user gesture is required." Videos should now play automatically. This is for informational purposes only. Please use at your own risk.
For Safari instructions, there are instructions available on the web. This link leads to a site unaffiliated with us. This is for informational purposes only. Please at your own discretion.