Guvera seems to be pre-occupied with using HTTPS all the time, maybe someone thinks that secure means that you can't do stuff bad to it. Morons. Anyway, it'll mean that you won't be able to use Wireshark, you'll need to use oSpy, Fiddler or Chrome's Developer Tools to get what you need.
Luckly, Guvera leverage off existing open-source software like Flowplayer, so it should be pretty easy to find the streaming RTMP urls.
The RTMP url can be retrieved by POSTing application/x-www-form-urlencoded data to https://www.guvera.com/channel?execution=e10s1 .
The formdata I've observed is channelform=channelform&javax.faces.ViewState=e10s1&primefacesAjaxRequest=true&update=download, credit, script&playlist:1:j_id93_link=playlist:1:j_id93_link
I've already lost interest, look how ugly their AJAX is. Edit this page if you find anything interesting.