Thank you very much for help. I found out what my problem was. I've had installed a 32bit version of VLC and so I couldn't found the ActiveX plugin in WinCC OA. After I have installed an 64bit version it perfectly works.

Hello,
i'm using WinCC OA 3.14 and i want to use the ActiveX Plugin from VLC. What do i have to do to install/activate this plugin in WinCC OA?