[FFmpeg-user] Help with REDCODE

[help at archivomas.com]

Hi,

i need help, i want decode r3d (redcode) videos on a h264 (mp4) file, i try:

ffmpeg -i A001_C004_1124MU_001.R3D -vcodec libx264 new.mp4

but, i get

Input #0, r3d, from 'A001_C004_1124MU_001.R3D':
   Duration: 00:00:04.96, start: 0.000000, bitrate: 314771 kb/s
     Stream #0.0(und): Video: 0x0000, 4096x2304p, 23.98 fps
     Metadata:
       filename: A001_C004_1124MU_001.R3D
     Stream #0.1(und): Audio: pcm_s32be, 48000 Hz, 2 channels, s32, 3072 kb/s
File 'uno.mp4' already exists. Overwrite ? [y/N] y
Video pixel format is unknown, stream cannot be encoded


my ffmpeg compillation is

ffmpeg version 0.8.3, Copyright (c) 2000-2011 the FFmpeg developers
   built on Sep  9 2011 10:54:26 with gcc 4.1.2 20080704 (Red Hat 4.1.2-50)
   configuration: --disable-shared --enable-static --disable-ffplay  
--disable-ffserver --enable-gpl --enable-pthreads --enable-postproc  
--enable-gray --enable-libfaac --enable-libmp3lame --enable-libx264  
--enable-libxvid --enable-bzlib --enable-zlib --enable-nonfree  
--enable-version3 --enable-runtime-cpudetect --enable-libopenjpeg


any idea ?