use rtmpdump
Code:
rtmpdump -r "rtmp://174.129.171.207/vod" -a "vod" -f "WIN 11,2,202,235" -W "http://newmedia.ufm.edu/gsm/extensions/player/flvplayer.swf" -p "http://newmedia.ufm.edu/gsm/index.php/-+Qui+¬n_es_el_due+¦o_del_subsuelo%3F" -y "mp4:derechodelsubsuelo/derechodelsubsuelo128.mp4" -o derechodelsubsuelo128.flv
another simple way to download this video is
INTERNET DOWNLOAD MANAGER