The streams breaks at 8 seconds approx. This occurs with all the streams from the site which in general seems to be fixed to the structure
Code:
rtmpdump -r "rtmp://server:443/live" -a "live?token" -f "WIN 14,0,0,145" -W "http://vaughnlive.tv/800021294/swf/VaughnSoftPlayer.swf" -p "http://vaughnlive.tv/channel" -v -y "live_channel" -o "stream.flv"
works any token, and without any maybe too, if the channel is on. The fall is that the flash introduces a daemon which every 2 seconds send the command "getStreamConnectionCount" with the parameter playpath, in absence of which the server breaks. This is only a hypothesis.