FFmpeg version UNKNOWN, Copyright (c) 2000-2010 the FFmpeg developers
  built on Jul 22 2010 20:05:30 with gcc 4.2.1 (Apple Inc. build 5646)
  configuration: --prefix=/usr/local/Cellar/ffmpeg/HEAD --disable-debug --enable-shared --enable-pthreads --enable-nonfree --enable-gpl --enable-libx264 --enable-libfaac --enable-libfaad --enable-libmp3lame
  libavutil     50.14. 0 / 50.14. 0
  libavcodec    52.66. 0 / 52.66. 0
  libavformat   52.61. 0 / 52.61. 0
  libavdevice   52. 2. 0 / 52. 2. 0
  libswscale     0.10. 0 /  0.10. 0

Seems stream 0 codec frame rate differs from container frame rate: 3000.00 (3000/1) -> 1500.00 (3000/2)
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/Users/germ/Movies/iShowU-Capture2/Resources/iShowU-Capture2 - Computer.m4v':
  Metadata:
    major_brand     : M4VH
    minor_version   : 1
    compatible_brands: M4VHM4A mp42isom
    encoder         : CoreMediaAuthoring 706, CoreMedia 484.60, i386
  Duration: 01:16:27.73, start: 0.000000, bitrate: 632 kb/s
    Stream #0.0(eng): Video: h264, yuv420p, 1152x720 [PAR 1:1 DAR 8:5], 629 kb/s, 14.86 fps, 1500 tbr, 1500 tbn, 3k tbc
At least one output file must be specified