www.channel4.com: Using Rtmpdump for downloading 4OD videos

[steamstream]

Hi,

I've used rtmpsrv to grab the following command:

rtmpdump -r "rtmpe://ll.securestream.channel4.com:1935/a4174/e1/?ovpfv=1.1&e=1288730366&ip=92.24.186.161&h=d5eeee8042d9b35fbc213672660bc646" -a "a4174/e1/?ovpfv=1.1&e=1288730366&ip=92.24.186.161&h=d5eeee8042d9b35fbc213672660bc646" -f "WIN 10,1,85,3" -W "http://www.channel4.com/static/programmes/asset/flash/swf/4odplayer-4.71.swf" -p "http://www.channel4.com/programmes/buried-alive-the-chilean-mine -rescue/4od#3132338" -C Z: -y "mp4:xcuassets/CH4_08_02_16_51002001001001_001.mp4?e=1288730366&ip=92.24.186.161&h=d5eeee8042d9b35fbc213672660bc646" -o CH4_08_02_16_51002001001001_001.flv

When I try this command I get the following output:

ERROR: RTMP_ReadPacket, failed to read RTMP packet header

What am I doing wrong (rtmpdump 2.2d, WinXP)?