@john3voltas
Another way to block the popups is to use a Web Debugging Proxy.
You can use for example Charles (
http://www.charlesproxy.com/ )
Open the page and take a look at the requests. Find the requests for popups do right-click and add them to charles black list.
@daMichael
You can record the stream using rtmpsuck. After sometime rtmpsuck will stop working but you can open the file Command.bat in the editor and see which parameters were used. Simply start rtmpdump using them and it should work. While it's recording you can open the videofile in vlc-player and watch it (or you can edit the parameters to use vlc-player directly) However the created file has wrong duration so you have to repair it somehow.