Trying to download CSPan video with RTMPDump NetStream.Play.StreamNotFound

[Nomorecocktails]

Based on what i have pieced together from wireshark and the xml file this is the url i get
rtmp://s1g3v4ljhhuslz.cloudfront.net:1935/cfx/st/trimmed/full/311/311996-3/311996-3-MP4-STD_01.mp4

the video is here
http://www.c-spanvideo.org/program/JusticeCla

however when i feed the rtmp url into rtmpdump i get the NetStream.Play.StreamNotFound

So obviously my command is not right. What am i missing?

[hasomaso]

rtmpdump -r "rtmp://s1g3v4ljhhuslz.cloudfront.net:80/cfx/st/mp4:trimmed/full/311/311996-3/311996-3-MP4-STD_01.mp4" -a "cfx/st" -W "http://www.c-spanvideo.org/videoLibrary/assets/swf/CSPANPlayer.13.04.04.swf?programid=309357" -p "http://www.c-spanvideo.org/program/JusticeCla" -y "mp4:trimmed/full/311/311996-3/311996-3-MP4-STD_01.mp4" -o "output.flv"

[Nomorecocktails]

Thanks!