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-bash-4.0# ffmpeg -i night.mkv
ffmpeg version N-48389-g341e40f Copyright (c) 2000-2013 the FFmpeg developers
  built on Jan  1 2013 20:34:19 with gcc 4.4.4 (GCC) 20100630 (Red Hat 4.4.4-10)
  configuration: --enable-gpl --enable-version3 --enable-nonfree --enable-postproc --enable-libfaac --enable-libmp3lame --enable-libvorbis --enable-libx264
  libavutil      52. 13.100 / 52. 13.100
  libavcodec     54. 85.100 / 54. 85.100
  libavformat    54. 59.100 / 54. 59.100
  libavdevice    54.  3.102 / 54.  3.102
  libavfilter     3. 30.102 /  3. 30.102
  libswscale      2.  1.103 /  2.  1.103
  libswresample   0. 17.102 /  0. 17.102
  libpostproc    52.  2.100 / 52.  2.100
Input #0, matroska,webm, from 'night.mkv':
  Metadata:
    ENCODER         : Lavf54.59.100
  Duration: 00:00:14.18, start: 0.000000, bitrate: 1060920 kb/s
    Stream #0:0: Video: huffyuv (HFYU / 0x55594648), bgra, 2376x1584, SAR 1:1 DAR 3:2, 23.98 fps, 23.98 tbr, 1k tbn, 1k tbc (default)
At least one output file must be specified
-bash-4.0# ffmpeg -i night.mkv -croptop 187 -cropbottom 62 new.mkv
ffmpeg version N-48389-g341e40f Copyright (c) 2000-2013 the FFmpeg developers
  built on Jan  1 2013 20:34:19 with gcc 4.4.4 (GCC) 20100630 (Red Hat 4.4.4-10)
  configuration: --enable-gpl --enable-version3 --enable-nonfree --enable-postproc --enable-libfaac --enable-libmp3lame --enable-libvorbis --enable-libx264
  libavutil      52. 13.100 / 52. 13.100
  libavcodec     54. 85.100 / 54. 85.100
  libavformat    54. 59.100 / 54. 59.100
  libavdevice    54.  3.102 / 54.  3.102
  libavfilter     3. 30.102 /  3. 30.102
  libswscale      2.  1.103 /  2.  1.103
  libswresample   0. 17.102 /  0. 17.102
  libpostproc    52.  2.100 / 52.  2.100
Option 'croptop' has been removed, use the crop filter instead
Failed to set value '187' for option 'croptop'
Error parsing global options: Invalid argument