I have using the following code it works fine with me with any version of rtmpdump by ksv.
Code:
rtmpdump -r "rtmp://edge7-b.stream.highwebmedia.com/live-edge" -a "live-edge" -f "WIN 11,5,502,146" -W "http://chaturbate.com/static/flash/CBV_2p634.swf" -p "http://chaturbate.com/CamName/" -y "mp4" -o "C:\temp\Test.flv" -C S:CB_USERNAME -C S:CamName -C S:2.634 -C S:PW_HASH -T "m9z#$dO0qe34Rxe@sMYxx%" --live
Replace CB_USERNAME & PW_HASH with your corresponding username & password hash respectively.