Strange, I get this simply with rtmpsuck, at least that clip from first link.
I did not try to log in on page from second link.
-y looks different for the same file in 2 different times.
Code:
rtmpdump -r "rtmp://networkfaculty.com:1935/vod/" -a "vod/" -f "WIN 25,0,0,171" -W "https://networkfaculty.com/static/js/jwplayer.flash.swf" -p "https://networkfaculty.com/es/courses/coursedetail/13-curso-windows-server-2012---instalacion-y-configuracion" -y "1496663009&s6FhVu9yb6YZsgnb9PnXRsUKgAwIZFCTB" -o "2017-06-05_12-45-09_1496663009_s6FhVu9yb6YZsgnb9PnXRsUKgAwIZFCTB.flv"
rtmpdump -r "rtmp://networkfaculty.com:1935/vod/" -a "vod/" -f "WIN 25,0,0,171" -W "https://networkfaculty.com/static/js/jwplayer.flash.swf" -p "https://networkfaculty.com/es/courses/coursedetail/13-curso-windows-server-2012---instalacion-y-configuracion" -y "1496663430&uUmmypdBUeQWt0sxQLuvBhBDEhGplvU07" -o "2017-06-05_12-50-35_1496663430_uUmmypdBUeQWt0sxQLuvBhBDEhGplvU07.flv"
RTMP Proxy Server v2.4 GIT-2015-12-14 (Compiled by KSV)
(c) 2010 Andrej Stepanchuk, Howard Chu; license: GPL
Streaming on rtmp://0.0.0.0:1935
WARNING: Trying different position for client digest!
Processing connect
app : vod/
flashVer : WIN 25,0,0,171
swfUrl : https://networkfaculty.com/static/js/jwplayer.flash.swf
tcUrl : rtmp://networkfaculty.com:1935/vod/
pageUrl : https://networkfaculty.com/es/courses/coursedetail/13-curso-windows-server-2012---instalacion-y-configuracion
live : no
Playpath : 1496663009&s6FhVu9yb6YZsgnb9PnXRsUKgAwIZFCTB
Saving as : 2017-06-05_12-45-09_1496663009_s6FhVu9yb6YZsgnb9PnXRsUKgAwIZFCTB.flv
WARNING: ignoring too small audio packet: size: 0
INFO: Metadata:
INFO: trackinfo:
INFO: language eng
INFO: timescale 12800.00
INFO: length 543232.00
INFO: sampledescription:
INFO: sampletype avc1
INFO: language eng
INFO: timescale 48000.00
INFO: length 2038781.00
INFO: sampledescription:
INFO: sampletype mp4a
INFO: audiochannels 2.00
INFO: audiosamplerate 48000.00
INFO: videoframerate 25.00
INFO: aacaot 2.00
INFO: avclevel 30.00
INFO: avcprofile 66.00
INFO: audiocodecid mp4a
INFO: videocodecid avc1
INFO: width 853.00
INFO: height 480.00
INFO: frameWidth 854.00
INFO: frameHeight 480.00
INFO: displayWidth 853.00
INFO: displayHeight 480.00
INFO: framerate 25.00
INFO: moovposition 40.00
INFO: duration 42.48
INFO: languageTrack0 IDE5Mi4xNjguMjU1LjQyIDE0OTY2NjMxMDk1NTM=
WARNING: ignoring too small video packet: size: 5
WARNING: ignoring too small audio packet: size: 0
ERROR: RTMP_ReadPacket, failed to read RTMP packet header
Closing connection... done!
WARNING: Trying different position for client digest!
Processing connect
app : vod/
flashVer : WIN 25,0,0,171
swfUrl : https://networkfaculty.com/static/js/jwplayer.flash.swf
tcUrl : rtmp://networkfaculty.com:1935/vod/
pageUrl : https://networkfaculty.com/es/courses/coursedetail/13-curso-windows-server-2012---instalacion-y-configuracion
live : no
Playpath : 1496663430&uUmmypdBUeQWt0sxQLuvBhBDEhGplvU07
Saving as : 2017-06-05_12-50-35_1496663430_uUmmypdBUeQWt0sxQLuvBhBDEhGplvU07.flv
WARNING: ignoring too small audio packet: size: 0
INFO: Metadata:
INFO: trackinfo:
INFO: language eng
INFO: timescale 12800.00
INFO: length 543232.00
INFO: sampledescription:
INFO: sampletype avc1
INFO: language eng
INFO: timescale 48000.00
INFO: length 2038781.00
INFO: sampledescription:
INFO: sampletype mp4a
INFO: audiochannels 2.00
INFO: audiosamplerate 48000.00
INFO: videoframerate 25.00
INFO: aacaot 2.00
INFO: avclevel 30.00
INFO: avcprofile 66.00
INFO: audiocodecid mp4a
INFO: videocodecid avc1
INFO: width 853.00
INFO: height 480.00
INFO: frameWidth 854.00
INFO: frameHeight 480.00
INFO: displayWidth 853.00
INFO: displayHeight 480.00
INFO: framerate 25.00
INFO: moovposition 40.00
INFO: duration 42.48
INFO: languageTrack0 IDE5Mi4xNjguMjU1LjQyIDE0OTY2NjM0MzYyMjk=
WARNING: ignoring too small video packet: size: 5
WARNING: ignoring too small audio packet: size: 0
ERROR: RTMP_ReadPacket, failed to read RTMP packet header
Closing connection... done!