What i'm doing wrong when using rtmpdump with ffmpeg (rtmp://)?

Quote:

[root@drzos ~]# rtmpdump --live -r "rtmp://live.yycast.com/lb/<StreamFile>" -p "http://yycas t.com" -W "http://yycast.com/player/player-licensed.swf" -q | ffmpeg -i - -re -i sync -acodec libfaac -ab 128000 -ar 32000 -vcodec libx264 -b 600k -f flv "rtmp:/ /live.justin.tv/app/<StreamUrl>"
FFmpeg version 0.6.1, Copyright (c) 2000-2010 the FFmpeg developers
built on Dec 4 2010 15:35:31 with gcc 4.1.2 20080704 (Red Hat 4.1.2-48)
configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64 --mandi r=/usr/share/man --incdir=/usr/include --disable-avisynth --extra-cflags='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp- buffer-size=4 -m64 -mtune=generic -fPIC' --enable-avfilter --enable-avfilter-lav f --enable-libdirac --enable-libfaac --enable-libfaad --enable-libfaadbin --enab le-libgsm --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-am rwb --enable-libx264 --enable-gpl --enable-nonfree --enable-postproc --enable-pt hreads --enable-shared --enable-swscale --enable-vdpau --enable-version3 --enabl e-x11grab
libavutil 50.15. 1 / 50.15. 1
libavcodec 52.72. 2 / 52.72. 2
libavformat 52.64. 2 / 52.64. 2
libavdevice 52. 2. 0 / 52. 2. 0
libavfilter 1.19. 0 / 1.19. 0
libswscale 0.11. 0 / 0.11. 0
libpostproc 51. 2. 0 / 51. 2. 0
pipe:: Invalid data found when processing input

What i'm doing Wrong?