Cannot watch ARTE media center videos (youtube works): do i need some packman packages?

I have the current opensuse Tumbleweed installed on my notebook, only default repositories, no packman.
I can watch youtube videos but i cannot watch videos from the Arte (a french/german tv station) Mediathek/media center (like this: https://www.arte.tv/de/videos/065830-000-A/follow-me-arabische-videostars/)! The error message is very simple, it basically just says that my system does not fulfill the needed (system) requirements.

But i guess that there is just some package needed that only packman can provide, can anyone confirm this?

https://forums.opensuse.org/showthread.php/523476-Multimedia-Guide-for-openSUSE-Tumbleweed

Watching ths video works for me on my hardware from 2005 (i686, ATI gfx).
But I have installed lots of packman packages.

Hendrik

Thanks, i followed the instructions and now i can watch the videos.