Zeranoe has removed his download links to rtmpdump for the reason known only to him.
https://ffmpeg.zeranoe.com/forum/viewtopic.php?t=1024
Here is one alternative very similar to Zeranoe's distro and with later updates.
Rtmpsuck from this distro may work where KSV's rtmpsuck crushes.
Courtesy of:
Vangelis66
rtmpdump-2.4-20151223-gfa8646d-GnuTLS_3.5.12-win32-static.27-May-2017.zip
http://www.datafilehost.com/d/11210ce4