Thanks a lot , the problem partly solved ,though I still fail to download,here is the code I got :
Administrator@pc ~
$ hulu.sh
Killed flash player for clean dump.
Restart video then press enter here
0 400_h264 limelight
1 400_h264 level3
2 400_h264 akamai
3 1000_h264 limelight
4 1000_h264 level3
5 1000_h264 akamai
6 650_h264 limelight
7 650_h264 level3
8 650_h264 akamai
9 480_vp6 limelight
10 480_vp6 level3
11 480_vp6 akamai
Make choice. Avoid level3.
9
+ rtmpdump -W
http://download.hulu.com/huludesktop.swf -a 'a2461/o23?as=adobe-hmac-sha256&av=1&te=connect&mp=900/60117900&et=1347171924&fmta-token=ca05b01c979e9dfac49e9b0224be2fd9e11596444538 6db065a73b85b604cb19&hgt=OZU7Pvs7j27-nhteNno7wjGoDnDXlAT-C8vz5FQm5Jt1L8H5HiA9Fe9h5BwNmtF9z2Gd52PiTcuJDMAwBy zVZKLE7DeIEoh5y31U0mdIP3bmdKv_NWtRMG4XxHnqwlOyRrki mm2EBOoOgnH_KUvxOOmlIpiKcrXIiNtp9E8L_mRSGEVxps_Fi8 on0LSWL1lYUnDZi9pDb4_ChCaDreHfVb2EpuuV3-mLWsn_jqtKhqEtSFN6n8c4xNCsXRpugh0a3fshgRfkTX-5WBS4TugWT04GBARCjZq7tYlg7AGKKCI=&hgt_ver=33137027 8' -o out.flv -r rtmpe://hulu-900.fcod.llnwd.net/a2461/o23 -y 900/60117900/agave50340275_11791509_FLV_400
RTMPDump v2.4 GIT-2011-07-11 (Compiled by KSV)
(c) 2010 Andrej Stepanchuk, Howard Chu, The Flvstreamer Team; license: GPL
ERROR: RTMP_HashSWF: connection lost while downloading swfurl
http://download.hulu.com/huludesktop.swf
Connecting ...
WARNING: HandShake: Type mismatch: client sent 6, server answered 9
INFO: Connected...
ERROR: rtmp server sent error
ERROR: rtmp server requested close
Administrator@pc ~
$
I am not in the US, so I have been using go agent to access to hulu.com. Does this contribute anything to the download failure ?