ffmpeg -re -i "rtmp://192.168.1.221/inputapp/mp4:input.mp4 live=1 buffer=0" -vcodec flv1 -f flv "rtmp://192.168.1.221/outputapp/output"
ffmpeg version N-51511-g599866f Copyright (c) 2000-2013 the FFmpeg developers
  built on Apr  1 2013 12:49:42 with gcc 4.8.0 (GCC)
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab
le-libass --enable-libbluray --enable-libcaca --enable-libfreetype --enable-libgsm --enable-libilbc --enable-libmp3lame --enable-libopencore-amrnb --enable-libo
pencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-lib
twolame --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid --enable-zlib
  libavutil      52. 24.100 / 52. 24.100
  libavcodec     55.  2.100 / 55.  2.100
  libavformat    55.  1.100 / 55.  1.100
  libavdevice    55.  0.100 / 55.  0.100
  libavfilter     3. 48.105 /  3. 48.105
  libswscale      2.  2.100 /  2.  2.100
  libswresample   0. 17.102 /  0. 17.102
  libpostproc    52.  2.100 / 52.  2.100
Input #0, flv, from 'rtmp://192.168.1.221/inputapp/mp4:input.mp4 live=1 buffer=0':
  Duration: N/A, start: 0.000000, bitrate: N/A
    Stream #0:0: Video: h264 (Main), yuv420p, 640x480 [SAR 1:1 DAR 4:3], 10 tbr, 1k tbn, 20 tbc
Output #0, flv, to 'rtmp://192.168.1.221/outputapp/output':
  Metadata:
    encoder         : Lavf55.1.100
    Stream #0:0: Video: flv1 ([2][0][0][0] / 0x0002), yuv420p, 640x480 [SAR 1:1 DAR 4:3], q=2-31, 200 kb/s, 1k tbn, 10 tbc
Stream mapping:
  Stream #0:0 -> #0:0 (h264 -> flv)
Press [q] to stop, [?] for help
Failed to update header with correct duration.
[flv @ 000000000489dfe0] Failed to update header with correct filesize.
frame=   93 fps=0.0 q=16.9 Lsize=     423kB time=00:00:09.40 bitrate= 368.2kbits/s
video:421kB audio:0kB subtitle:0 global headers:0kB muxing overhead 0.394226%