Hey mark.l,

I am sorry that delay of this reply,

You can download the redactor editor from this download page -> http://stackideas.com/downloads/plugins , after you downloaded then you need to install from your backend Joomla installer and enable from plugin manager.

So you can configure this editor from backend > Easydiscuss > settings > layout > general > Default editor for questions / Default editor for replies

By the way, I am not really sure which editor you would like to remove that video feature.

/* If you referring on BBcode, you can apply this css in your current template css, so it will auto hide it */

li.markItUpButton.markItUpButton6.markitup-video {

    display: none;

}



/* If you referring on Redactor editor, you can apply this css in your current template css, so it will auto hide it */

a.redactor_btn.redactor_btn_video {

    display: none;

}

Hope this help.