in this case no -C S:....... option
if it exists, rtmpsrv normally gives us
so in this case the token enough
Code:
rtmpdump -r "rtmp://31.220.0.206/redirect/" -a "redirect/" -f "WIN 16,0,0,235" -W "http://p.jwpcdn.com/6/11/jwplayer.flash.swf" -p "http://reytv.co/embedo.php?live=btx11a&vw=620&vh=490" -y "btx11a" -o "btx11a.flv" -T '%Zrey(nKa@#Z'