rtmpdumphelper can download but rtmpdump command line can't

[similai]

The url is -
http://www.koolearn.com/lecture/0/12...method=forward


Since I can download the mp4 file from this site via rtmpdumphelper, I cannot download the file from the rtmpdump command line.
Anybody can help?

The command I used is -

rtmpdump -r rtmp://fms.koolearn.com/vod2/ -W http://www.koolearn.com/jsp/courseweb/StrobeMediaPlayback/player_mp4_damoban_jiami_1205_do.swf -p http://www.koolearn.com/lecture/0/120688/0/585902?_method=forward -y mp4:ky/2014ky/kyyy/20
14kyyy_jc_yd_17.mp4 -o 2014kyyy_jc_yd_17.mp4

[AmazingMatze]

rtmpdump -r "rtmp://fms.koolearn.com/vod2/" -a "vod2/" -f "WIN 11,6,602,168" -W "http://www.koolearn.com/jsp/courseweb/StrobeMediaPlayback/player_mp4_damoban_jiami_1205_do.swf" -p "http://www.koolearn.com/lecture/0/120688/0/585902?_method=forward" -C S:0 -C S:8F97E588EC4BDDC9057A8D254B2BAAA7.tomcatb -C S:1361211527651 -C S:5a220c79636b5e86d61c3f3215693f22 -y "mp4:ky/2014ky/kyyy/2014kyyy_jc_yd_17.mp4" -o "2014kyyy_jc_yd_17.mp4.flv"

Use RTMPDumpHelper & RTMPSuck (KSV Version). It will automatically retrieve the correct commandline parameters!

[similai]

Thanks, AmazingMatze.
But, this command didn't download the full video, it stop at about 1.5%.

The error message:

976.703 kB / 18.44 sec (1.7%)
ERROR: RTMP_ReadPacket, failed to read RTMP packet header
978.521 kB / 18.44 sec (1.7%)
Download may be incomplete (downloaded about 1.70%), try resuming

[AmazingMatze]

Ok, this seems to be a bit more tricky. I guess, technically it could be done with RTMPDump. Better stick to your current setup of RTMPDumpHelper & RTMPSuck. - Nonetheless I tried the following batch with varying success. As you can see, I got it to download about 20% of the file. But resuming seems to fail unpredictably. That's why I had to execute the batch several times.

Start_Resume.bat

@echo off

set /a i=0

rtmpdump -T "token" -R -r "rtmp://fms.koolearn.com/vod2/" -a "vod2/" -f "WIN 11,6,602,168" -W "http://www.koolearn.com/jsp/courseweb/StrobeMediaPlayback/player_mp4_damoban_jiami_1205_do.swf" -p "http://www.koolearn.com/lecture/0/120688/0/585902?_method=forward" -C S:0 -C S:8F97E588EC4BDDC9057A8D254B2BAAA7.tomcatb -C S:1361211527651 -C S:5a220c79636b5e86d61c3f3215693f22 -y "mp4:ky/2014ky/kyyy/2014kyyy_jc_yd_17.mp4" -o "2014kyyy_jc_yd_17.mp4.flv"
echo.
echo Resume?
echo.
pause

:resume
cls
set /a i=%i%+1
echo Download attempt No. %i%:
echo.
rtmpdump -e -T "token" -R -r "rtmp://fms.koolearn.com/vod2/" -a "vod2/" -f "WIN 11,6,602,168" -W "http://www.koolearn.com/jsp/courseweb/StrobeMediaPlayback/player_mp4_damoban_jiami_1205_do.swf" -p "http://www.koolearn.com/lecture/0/120688/0/585902?_method=forward" -C S:0 -C S:8F97E588EC4BDDC9057A8D254B2BAAA7.tomcatb -C S:1361211527651 -C S:5a220c79636b5e86d61c3f3215693f22 -y "mp4:ky/2014ky/kyyy/2014kyyy_jc_yd_17.mp4" -o "2014kyyy_jc_yd_17.mp4.flv"
rem // max attempts = 100
if %i%==100 goto stop
goto resume

:stop
cls
echo %i% resume attempts...
echo.
pause

Download attempt No. 31:

RTMPDump v2.4 GIT-2012-11-09 (Compiled by KSV)
(c) 2010 Andrej Stepanchuk, Howard Chu, The Flvstreamer Team; license: GPL
Connecting ...
INFO: Connected...
Resuming download at: 11410.727 kB / 230.000 sec (21.2%)
  in approximately realtime (disabled BUFX speedup hack)
INFO: Metadata:
INFO:   duration                1080.98
INFO:   moovPosition            32.00
INFO:   width                   640.00
INFO:   height                  360.00
INFO:   videocodecid            avc1
INFO:   audiocodecid            mp4a
INFO:   avcprofile              100.00
INFO:   avclevel                13.00
INFO:   aacaot                  2.00
INFO:   videoframerate          25.00
INFO:   audiosamplerate         44100.00
INFO:   audiochannels           2.00
INFO: trackinfo:
INFO:   length                  27023000.00
INFO:   timescale               25000.00
INFO:   language                und
INFO: sampledescription:
INFO:   sampletype              avc1
INFO:   length                  47671296.00
INFO:   timescale               44100.00
INFO:   language                und
INFO: sampledescription:
INFO:   sampletype              mp4a
WARNING: Stream does not start with requested frame, ignoring data...
WARNING: Stream does not start with requested frame, ignoring data...
11625.893 kB / 234.76 sec (21.7%)

[similai]

Thank you,AmazingMatze. RTMPDumpHelper & rtmpsuck is the best solution. I tried your batch file but failed after 100 rounds. I'm curious about what makes rtmpdump commandline won't work with -e parameter? Is there any change on the stream packet, so it can only be downloaded via browser->rtmpsuck->rtmpdump?