[KSV]

i was able to download your video by copying your parameters from screenshot and after adding the SecurityToken to command.

rtmpdump.exe -r "rtmpe://video06.r2learning.com.br/SNJ/mp4:Ingles/221210_UT01_UE01_ROBERTO_WITTE_400K.mp4" -a "SNJ" -W http://preparatorios.institutoiob.com.br/_player/playerIOB.swf?id=3229 -T "!vy268Pz@2Ym4Bz" -y "mp4:Ingles/221210_UT01_UE01_ROBERTO_WITTE_400K.mp4" -o Test.flv

RTMPDump v2.3 r569 (Compiled by KSV)
(c) 2010 Andrej Stepanchuk, Howard Chu, The Flvstreamer Team; license: GPL
Connecting ...
WARNING: Trying different position for server digest!
INFO: Connected...
Starting download at: 0.000 kB
INFO: Metadata:
INFO: trackinfo:
INFO:   timescale             15000.00
INFO:   length                12550000.00
INFO:   language              eng
INFO: sampledescription:
INFO:   sampletype            avc1
INFO:   timescale             16000.00
INFO:   length                13388800.00
INFO:   language              eng
INFO: sampledescription:
INFO:   sampletype            mp4a
INFO:   audiochannels         2.00
INFO:   audiosamplerate       16000.00
INFO:   videoframerate        15.00
INFO:   aacaot                2.00
INFO:   avclevel              30.00
INFO:   avcprofile            77.00
INFO:   audiocodecid          mp4a
INFO:   videocodecid          avc1
INFO:   width                 480.00
INFO:   height                352.00
INFO:   frameWidth            480.00
INFO:   frameHeight           352.00
INFO:   displayWidth          480.00
INFO:   displayHeight         352.00
INFO:   framerate             15.00
INFO:   moovposition          32.00
INFO:   duration              836.80
7676.809 kB / 34.67 sec (4.1%)