Use rtmpsrv or rtmpsuck to see the parameters the flash client is using. rtmpsrv will give you the exact
rtmpdump commandline.
This is what I got, but I can't actually connect to their server, the connection always times out:
rtmpdump -r "rtmp://videos.ant1.com.cy/vod" -a "vod" -W "http://www.ant1.com.cy/flowplayer.rtmp-3.1.3.swf" -t "rtmp://videos.ant1.com.cy/vod" -p "http://www.ant1.com.cy/nqcontent.cfm?a_id=5352&tt=graphic&lang=l1" -y "aigia_fouxia_2_41" -o output.flv