rtmp server requested close on zerocast stream

[4r1y4n]

Hi
I'm trying to dump this stream:
http://tv4embed.com/usa/NBC-stream1.html

I extracted parameters like this (using both Wireshark & rtmpsrv):

rtmpdump -V -r 'rtmp://rtmp.zerocast.tv:1935/live?t=54cbecd3c5127/' -a 'live?t=54cbecd3c5127/' -f 'LNX 16,0,0,296' -W 'http://cdn.zerocast.tv/player/jwplayer.flash.swf' -p 'http://zerocast.in/embed.php?a=653&id=&width=658&height=430&autostart=true&strech=' -y '3GdoAHRAxgZNzmQZL29l'  -T '8964316ec8772dfa' -o out.flv

But i'm getting "rtmp server requested close" !
I tried with both of original rtmpdump & K-S-V version.

Here is the output:

RTMPDump v2.4
(c) 2010 Andrej Stepanchuk, Howard Chu, The Flvstreamer Team; license: GPL
DEBUG: Parsing...
DEBUG: Parsed protocol: 0
DEBUG: Parsed host    : rtmp.zerocast.tv
DEBUG: Parsed app     : live?t=54cbecd3c5127
DEBUG: Protocol : RTMP
DEBUG: Hostname : rtmp.zerocast.tv
DEBUG: Port     : 1935
DEBUG: Playpath : 3GdoAHRAxgZNzmQZL29l
DEBUG: tcUrl    : rtmp://rtmp.zerocast.tv:1935/live?t=54cbecd3c5127/
DEBUG: swfUrl   : http://cdn.zerocast.tv/player/jwplayer.flash.swf
DEBUG: pageUrl  : http://zerocast.in/embed.php?a=653&id=&width=658&height=430&autostart=true&strech=
DEBUG: app      : live?t=54cbecd3c5127/
DEBUG: flashVer : LNX 16,0,0,296
DEBUG: live     : no
DEBUG: timeout  : 30 sec
DEBUG: SWFSHA256:
DEBUG: 61 95 5f 46 f5 d1 d3 0d eb e5 a2 86 fb 42 d2 54
DEBUG: bf 54 7a 05 12 24 92 f0 ed 22 f1 c0 0a 71 e8 56
DEBUG: SWFSize  : 396979
DEBUG: Setting buffer time to: 36000000ms
Connecting ...
DEBUG: RTMP_Connect1, ... connected, handshaking
DEBUG: HandShake: Client type: 03
DEBUG: HandShake: Client digest offset: 417
DEBUG: HandShake: Initial client digest: 
DEBUG: 5c 04 5a 66 58 ff a0 40 33 fe 35 3d 4e c3 59 90
DEBUG: 55 d0 6f ff 88 6c e9 a4 d4 32 fd 5e 7e f4 f6 e9
DEBUG: HandShake: Type Answer   : 03
DEBUG: HandShake: Server Uptime : 96850052
DEBUG: HandShake: FMS Version   : 3.0.1.1
DEBUG: HandShake: Calculated digest key from secure key and server digest: 
DEBUG: 9e ed a0 e9 fc b3 3f d8 7e 08 1f 41 80 75 a1 bb
DEBUG: a5 5c ec c1 5f 4c 3d f0 27 7f 69 ae b0 f9 45 47
DEBUG: HandShake: Client signature calculated:
DEBUG: 09 d2 a0 ab 5d fa ef 8a 61 b0 f7 ed c4 d2 3c b1
DEBUG: 22 31 c9 7b ef 01 43 b5 76 d4 53 b5 b9 8d 49 20
DEBUG: HandShake: Server sent signature:
DEBUG: 82 bb 89 20 bc d1 32 66 cc f9 a3 03 df 1b 60 6c
DEBUG: a3 16 a4 7a 0f 11 4a b2 e3 e9 95 db df 37 83 27
DEBUG: HandShake: Digest key: 
DEBUG: fb 28 59 2a 65 8b 58 8b a5 0c df 1d 8f 0a 85 7e
DEBUG: 5a 27 63 a5 c6 c5 c7 58 c0 9e 45 ed 32 22 b1 6c
DEBUG: HandShake: Signature calculated:
DEBUG: 82 bb 89 20 bc d1 32 66 cc f9 a3 03 df 1b 60 6c
DEBUG: a3 16 a4 7a 0f 11 4a b2 e3 e9 95 db df 37 83 27
DEBUG: HandShake: Genuine Adobe Flash Media Server
DEBUG: HandShake: Handshaking finished....
DEBUG: RTMP_Connect1, handshaked
DEBUG: Invoking connect
INFO: Connected...
DEBUG: HandleServerBW: server BW = 2500000
DEBUG: HandleClientBW: client BW = 2500000 2
DEBUG: HandleCtrl, received ctrl, type: 0, len: 6
DEBUG: HandleCtrl, Stream Begin 0
DEBUG: HandleChangeChunkSize, received: chunk size change to 4096
DEBUG: RTMP_ClientPacket, received: invoke 18 bytes
DEBUG: (object begin)
DEBUG: Property: <Name:            no-name, STRING:	close>
DEBUG: Property: <Name:            no-name, NUMBER:	0.00>
DEBUG: Property: NULL
DEBUG: (object end)
DEBUG: HandleInvoke, server invoking <close>
ERROR: rtmp server requested close
DEBUG: Closing connection.

My IP is definitely registered with server (as the stream is playing in browser)
What is the problem?
Is there any AMF data missed? or what?

Thanks