Try this:
Code:
rtmpdump -r "rtmp://93.114.45.254/hdcaster" -a "hdcaster" --swfUrl "http://hdcaster.net/player.swf" --swfsize "80875" --swfhash "077bc5f20db3ac2b9b5de50ba7128f579d7902225f3cbeebe8244730cf106860" -p "http://hdcaster.net" --live -y "117847" -o "117847.flv"