Please Hel to use rtmp dump

[martynas931]

I am trying to record live stream of Ultra Music Festival , YTD says failure (2) no connection to server so i have tried to use rtmpdump , i have read the manual and some forums but still can find solution how to connect to server , here is a picture of CMD , i hope someone can provide me quick and easy solution how to get this festival recorded

[martynas931]

I googled for a solution to fix that socket error but i have tried disabled my firewall and check for other obvious solutions but still no luck please help me , today is day 2 and even bigger line up so i want to record it , thx