How to set or mute the initial volume of a YouTube embed in WordPress
EmbedPlus.com's WordPress plugin now allows you to initialize the volume of a YouTube embed. With our feature, you can set the default volume as a percentage from 0 (to mute the video) to 100 (for max volume). This video simply shows the plugin in action on a test page. As you see, all you need to do is check a box, pick a value, and save.
Get the YouTube embed plugin for WordPress here: https://wordpress.org/plugins/youtube...