watching video-streams in Firefox Portable

Hello,
I'm looking for a solution to watch Videostreams, different to flash.
For example the German TV-Channel ZDF offers good quality information about world-news:
http://www.zdf.de/ZDFmediathek/content/9602?inPopup=true
for watching this i can choose between 3 different plugins
http://www.rafzahn.com/pics/zdf_mediathek_streams.png
*Windows Mediaplayer
-> I dont like it that much, but i think it is installed on many Windows-PCs.
Is it possible to use it?
*VLC
-> I think most of us have installed VLC-Portable, but i read that the FF Plugin is not portable...
*Realplayer
-> I checked, its an EXE-Installer and i dont think its portable

Someone any ideas how to watch one of this streams portable?

thanks.