Save a stream to file and simultaneously play it in VLC

[ollolollo]

Hello,
I don't know if the following command should work, but it doesn't as required.

rtmpdump -r "rtmp://mtvnyc.dyndns.tv/repeater/MayapurTV" -a "repeater/MayapurTV" -f "WIN 15,0,0,152" -W "http://mayapur.tv/Nrsimhadeva.swf" -p "http://mayapur.tv/" -y "MayapurTV" -o "MayapurTV.flv" | C:\Programme\VideoLAN\VLC\vlc.exe

I want to play the livestream with VLC player and simultaneously save it to a file. The stream will saved correctly, VLC starts but doesn't play the stream.