When not display - Chrome error :
https://github.com/ant-media/Ant-Media-Server/issues/1200
https://antmedia.io/enable-ssl-on-ant-media-server/
install SSL to your instance
https://antmedia.io/enable-ssl-on-ant-media-server/
https://www.html5rocks.com/en/tutorials/getusermedia/intro/
https://simpl.info/getusermedia/sources/