bash-3.2# ffmpeg -i rtsp://192.168.0.100:554  http://localhost:8090/feed.ffm
FFmpeg version SVN-r26402, Copyright (c) 2000-2011 the FFmpeg developers
  built on May  8 2012 01:31:52 with llvm_gcc 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2335.15.00)
  configuration: --enable-libmp3lame --enable-libfaac --enable-gpl --enable-nonfree --enable-shared --disable-mmx --arch=x86_64 --cpu=core2 --enable-libvorbis --enable-libtheora
  libavutil     50.36. 0 / 50.36. 0
  libavcore      0.16. 1 /  0.16. 1
  libavcodec    52.108. 0 / 52.108. 0
  libavformat   52.93. 0 / 52.93. 0
  libavdevice   52. 2. 3 / 52. 2. 3
  libavfilter    1.74. 0 /  1.74. 0
  libswscale     0.12. 0 /  0.12. 0
[rtsp @ 0x7f990280b000] Estimating duration from bitrate, this may be inaccurate

Seems stream 0 codec frame rate differs from container frame rate: 180000.00 (180000/1) -> 90000.00 (180000/2)
Input #0, rtsp, from 'rtsp://192.168.0.100:554':
  Metadata:
    title           : VStream Live
    comment         : ICL Streaming Media
  Duration: N/A, start: 0.000000, bitrate: 32 kb/s
    Stream #0.0: Video: h264, yuv420p, 1280x1024, 90k tbr, 90k tbn, 180k tbc
    Stream #0.1: Audio: mp2, 16000 Hz, 1 channels, s16, 32 kb/s
TCP connection to localhost:8090 failed: Connection refused
    Last message repeated 1 times
[buffer @ 0x7f9902402110] w:1280 h:1024 pixfmt:yuv420p
[scale @ 0x7f9902401ef0] w:1280 h:1024 fmt:yuv420p -> w:576 h:432 fmt:yuv420p flags:0x4
Output #0, ffm, to 'http://localhost:8090/feed.ffm':
  Metadata:
    title           : VStream Live
    comment         : ICL Streaming Media
    encoder         : Lavf52.93.0
    Stream #0.0: Audio: libvorbis, 44100 Hz, 2 channels, s16, 64 kb/s
    Stream #0.1: Video: libtheora, yuv420p, 576x432, q=1-31, 512 kb/s, 1000k tbn, 24 tbc
Stream mapping:
  Stream #0.1 -> #0.0
  Stream #0.0 -> #0.1
Press [q] to stop encoding
Assertion failed: (c > 0), function av_rescale_rnd, file libavutil/mathematics.c, line 79.
Abort trap: 6