ffmpeg version 0.8.6, Copyright (c) 2000-2011 the FFmpeg developers
  built on Dec  1 2011 10:11:45 with gcc 4.1.2 20080704 (Red Hat 4.1.2-51)
  configuration: --enable-debug --enable-version3 --enable-shared --enable-gpl --enable-postproc --enable-nonfree --enable-avfilter --enable-pthreads --extra-cflags=-fPIC
  libavutil    51.  9. 1 / 51.  9. 1
  libavcodec   53.  7. 0 / 53.  7. 0
  libavformat  53.  4. 0 / 53.  4. 0
  libavdevice  53.  1. 1 / 53.  1. 1
  libavfilter   2. 23. 0 /  2. 23. 0
  libswscale    2.  0. 0 /  2.  0. 0
  libpostproc  51.  2. 0 / 51.  2. 0

Seems stream 0 codec frame rate differs from container frame rate: 180000.00 (180000/1) -> 90000.00 (180000/2)
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'kb1_0.mp4':
  Metadata:
    major_brand     : mp42
    minor_version   : 0
    compatible_brands: mp42isomavc1
    creation_time   : 2011-10-13 00:29:27
    encoder         : HandBrake 0.9.5 2011010300
  Duration: 00:30:44.89, start: 0.000000, bitrate: 1184 kb/s
    Stream #0.0(und): Video: h264 (Main), yuv420p, 320x176, 999 kb/s, 30 fps, 90k tbr, 90k tbn, 180k tbc
    Metadata:
      creation_time   : 2011-10-13 00:29:27
    Stream #0.1(eng): Audio: aac, 48000 Hz, stereo, s16, 177 kb/s
    Metadata:
      creation_time   : 2011-10-13 00:29:27
[null @ 0x9ecd160] Frame rate very high for a muxer not effciciently supporting it.
Please consider specifiying a lower framerate, a different muxer or -vsync 2
[buffer @ 0x9ed47c0] w:320 h:176 pixfmt:yuv420p tb:1/1000000 sar:0/1 sws_param:
Output #0, null, to '/dev/null':
  Metadata:
    major_brand     : mp42
    minor_version   : 0
    compatible_brands: mp42isomavc1
    creation_time   : 2011-10-13 00:29:27
    encoder         : Lavf53.4.0
    Stream #0.0(und): Video: rawvideo, yuv420p, 320x176, q=2-31, 200 kb/s, 90k tbn, 90k tbc
    Metadata:
      creation_time   : 2011-10-13 00:29:27
    Stream #0.1(eng): Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s
    Metadata:
      creation_time   : 2011-10-13 00:29:27
Stream mapping:
  Stream #0.0 -> #0.0
  Stream #0.1 -> #0.1
Press [q] to stop, [?] for help
[aac @ 0x9ed0b00] Number of bands (54) exceeds limit (46).20:05.86 bitrate=  -0.0kbits/s dup=108491519 drop=0
Error while decoding stream #0.1
[aac @ 0x9ed0b00] TNS filter order 13 is greater than maximum 12.
Error while decoding stream #0.1
frame=166034882 fps=1037288 q=0.0 Lsize=      -0kB time=00:30:44.80 bitrate=  -0.0kbits/s dup=165979537 drop=0
video:0kB audio:345900kB global headers:0kB muxing overhead -100.000006%