Code:
rtmpdump -r "rtmp://arte.fcod.llnwd.net/a2306/o25" -a "a2306/o25" -W "http://download.liveweb.arte.tv/o21/liveweb/flash/player.swf" -p "http://download.liveweb.arte.tv/o21/liveweb/flash/player.swf?appContext=liveweb&eventId=4953&admin=true&mode=prod&embed=false&autoPlay=false&lang=fr&chapterId=0&playOnlyChapter=false" -C B:0 -y "MP4:liveweb/stream/5059_25_05_13_mastermusiciansofbukkake_milgram_hd.mp4?e=1385334000&h=9756f318a145974a1a8a16985b418c03" -o d.flv