/opt/local/bin/ffmpeg -y -i test.mov -vb 300k -ar 44100 -acodec libfaac -ab 64k -pix_fmt yuv420p -vcodec libx264 -vpre ipod640 -f mp4 -vf "crop=iw:trunc(ih/hsub)*2" output.mp4
ffmpeg version 1.1.git-864fdfa Copyright (c) 2000-2013 the FFmpeg developers
  built on Mar 13 2013 16:05:36 with Apple clang version 4.1 (tags/Apple/clang-421.11.66) (based on LLVM 3.1svn)
  configuration: --prefix=/opt/local --enable-swscale --enable-avfilter --enable-libmp3lame --enable-libvorbis --enable-libopus --enable-libtheora --enable-libschroedinger --enable-libopenjpeg --enable-libmodplug --enable-libvpx --enable-libspeex --enable-libfreetype --mandir=/opt/local/share/man --enable-shared --enable-pthreads --cc=/usr/bin/clang --arch=x86_64 --enable-yasm --enable-gpl --enable-postproc --enable-libx264 --enable-libxvid --enable-nonfree --enable-libfaac
  libavutil      52. 17.101 / 52. 17.101
  libavcodec     54. 91.101 / 54. 91.101
  libavformat    54. 61.104 / 54. 61.104
  libavdevice    54.  3.103 / 54.  3.103
  libavfilter     3. 35.101 /  3. 35.101
  libswscale      2.  2.100 /  2.  2.100
  libswresample   0. 17.102 /  0. 17.102
  libpostproc    52.  2.100 / 52.  2.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'test.mov':
  Metadata:
    major_brand     : qt
    minor_version   : 537199360
    compatible_brands: qt
    creation_time   : 2013-02-11 03:18:18
    encoder         : Lavf52.94.0
  Duration: 00:01:03.74, start: 0.800000, bitrate: 3101 kb/s
    Stream #0:0: Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 3001 kb/s, 16.46 fps, 25 tbr, 25 tbn, 50 tbc
    Metadata:
      creation_time   : 2013-02-11 03:18:18
      handler_name    : Apple Alias Data Handler
    Stream #0:1: Audio: aac (mp4a / 0x6134706D), 32000 Hz, mono, fltp, 55 kb/s
    Metadata:
      creation_time   : 2013-02-11 03:18:18
      handler_name    : Apple Alias Data Handler
[libx264 @ 0x7ff28c06ae00] using SAR=1/1
[libx264 @ 0x7ff28c06ae00] frame MB size (80x45) > level limit (1620)
[libx264 @ 0x7ff28c06ae00] DPB size (3 frames, 4147200 bytes) > level limit (2 frames, 3110400 bytes)
[libx264 @ 0x7ff28c06ae00] MB rate (90000) > level limit (40500)
[libx264 @ 0x7ff28c06ae00] using cpu capabilities: none!
[libx264 @ 0x7ff28c06ae00] profile Constrained Baseline, level 3.0
[libx264 @ 0x7ff28c06ae00] 264 - core 128 - H.264/MPEG-4 AVC codec - Copyleft 2003-2012 - http://www.videolan.org/x264.html - options: cabac=0 ref=3 deblock=1:0:0 analyse=0x1:0x111 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=12 lookahead_threads=2 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=abr mbtree=1 bitrate=300 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 vbv_maxrate=10000 vbv_bufsize=10000 nal_hrd=none ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to 'output.mp4':
  Metadata:
    major_brand     : qt
    minor_version   : 537199360
    compatible_brands: qt
    encoder         : Lavf54.61.104
    Stream #0:0: Video: h264 ([33][0][0][0] / 0x0021), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], q=-1--1, 300 kb/s, 12800 tbn, 25 tbc
    Metadata:
      creation_time   : 2013-02-11 03:18:18
      handler_name    : Apple Alias Data Handler
    Stream #0:1: Audio: aac ([64][0][0][0] / 0x0040), 44100 Hz, mono, s16, 64 kb/s
    Metadata:
      creation_time   : 2013-02-11 03:18:18
      handler_name    : Apple Alias Data Handler
Stream mapping:
  Stream #0:0 -> #0:0 (h264 -> libx264)
  Stream #0:1 -> #0:1 (aac -> libfaac)