Code:
rtmpdump -r "rtmp://cdnfms530.ilcdn.net:1935/ilcdnse1_live/_definst_" -a "ilcdnse1_live/_definst_" -f "WIN 11,7,700,169" -W "http://www.clipmyhorse.de/flash/PlayerCMH.swf" -p "http://www.clipmyhorse.de/de/live/channel/2/" --live -C S:518f85cc91a1c -C S:FFD578120C208BEA31C9348C9065806F -y "live_cmh2_1" -o "12-05-13_01-05-47_live_cmh2_1.flv"