Broadcast Live using an iframe
If for whatever reason you want to use an iframe as a webinar source (because your desired integration isn't listed for example), you can configure that also.
Place the source URL of your iframe on the ‘live page’ settings of your webinar. Make sure the webinar type is configured as ‘Inline Frame (iframe)’, and save your settings.
The "Video Autoplay" and "Show controls" settings won't have any effect on the iframe.
Start your broadcast automatically!
If you are using the iframe source for a live webinar, then you will need to set the webinar status to “Live” in WP WebinarSystem manually, so your attendees will be redirected to your Live page (as soon as you are ready) and can see what you are broadcasting.
If you are using the iframe for an automated/recurring webinar then you won't have to do anything. WP WebinarSystem will switch to the right webinar page when it's time to start the webinar.