~/src/ffmpeg2/ffmpeg -i bright.mp4 bright5.mp4
ffmpeg version N-41089-gb4904e8 Copyright (c) 2000-2012 the FFmpeg developers
  built on May 28 2012 12:32:26 with llvm_gcc 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2336.1.00)
  configuration:
  libavutil      51. 55.100 / 51. 55.100
  libavcodec     54. 23.100 / 54. 23.100
  libavformat    54.  6.101 / 54.  6.101
  libavdevice    54.  0.100 / 54.  0.100
  libavfilter     2. 77.100 /  2. 77.100
  libswscale      2.  1.100 /  2.  1.100
  libswresample   0. 15.100 /  0. 15.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'bright.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    creation_time   : 1970-01-01 00:00:00
    encoder         : Lavf53.11.0
  Duration: 01:32:17.28, start: 0.000000, bitrate: 2201 kb/s
    Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 1280x720, 2031 kb/s, 1k fps, 1 tbr, 1k tbn, 2k tbc
    Metadata:
      creation_time   : 1970-01-01 00:00:00
      handler_name    : VideoHandler
    Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, mono, s16, 75 kb/s
    Metadata:
      creation_time   : 1970-01-01 00:00:00
      handler_name    : SoundHandler
File 'bright5.mp4' already exists. Overwrite ? [y/N] y
w:1280 h:720 pixfmt:yuv420p tb:1/1000 sar:0/1 sws_param:flags=2
[buffersink @ 0x7ff0bac19420] No opaque field provided
[aformat @ 0x7ff0bac1a080] auto-inserting filter 'auto-inserted resampler 0' between the filter 'src' and the filter 'aformat'
[aresample @ 0x7ff0bac1a500] chl:mono fmt:s16 r:44100Hz -> chl:mono fmt:flt r:44100Hz
[NULL @ 0x7ff0bb02fe00] Codec is experimental but experimental codecs are not enabled, see -strict -2
Output #0, mp4, to 'bright5.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    creation_time   : 1970-01-01 00:00:00
    encoder         : Lavf53.11.0
    Stream #0:0(und): Video: mpeg4, yuv420p, 1280x720, q=2-31, 200 kb/s, 90k tbn, 1 tbc
    Metadata:
      creation_time   : 1970-01-01 00:00:00
      handler_name    : VideoHandler
    Stream #0:1(und): Audio: none, 44100 Hz, mono, flt, 128 kb/s
    Metadata:
      creation_time   : 1970-01-01 00:00:00
      handler_name    : SoundHandler
Stream mapping:
  Stream #0:0 -> #0:0 (h264 -> mpeg4)
  Stream #0:1 -> #0:1 (aac -> aac)
Error while opening encoder for output stream #0:1 - maybe incorrect parameters such as bit_rate, rate, width or height