I had this issue, and I fixed it by updating my chromium flags.
I think --autoplay-policy=no-user-gesture-required fixed it, but the full thing ended up being:
chromium-browser --kiosk --disable-restore-session-state --noerrdialogs --disable-infobars --autoplay-policy=no-user-gesture-required https://localhost/wordpress/index.php/foyer/presentation/
