Hernando

Debian:/var/www/rails# ffmpeg -i vid.mp4 -y -acodec mp3 -ab 56 -ar 22050 -b 500 -r 15 -s 320×240 vid.flv
FFmpeg version SVN-r5725, Copyright (c) 2000-2004 Fabrice Bellard
configuration:  --enable-gpl --enable-mp3lame --enable-amr_wb --enable-amr_nb-fixed --enable-a52 --enable-a52bin --enable-pp --enable-shared --prefix=/usr
  libavutil version: 49.0.0
  libavcodec version: 51.10.0
  libavformat version: 50.4.0
  built on Jul 17 2006 11:16:43, gcc: 3.3.5 (Debian 1:3.3.5-13)

Seems that stream 0 comes from film source: 30000.00 (30000/1) -> 15.00 (15/1)
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'vid.mp4':
  Duration: 00:00:17.3, start: 0.000000, bitrate: 563 kb/s
  Stream #0.0(und): Video: mpeg4, yuv420p, 352x288, 15.00 fps(r)
  Stream #0.1(und): Audio: mp4a / 0x6134706D, 16000 Hz, stereo
Output #0, flv, to 'vid.flv':
  Stream #0.0: Video: flv, yuv420p, 320x240, q=2-31, 500 kb/s, 15.00 fps(c)
  Stream #0.1: Audio: mp3, 22050 Hz, stereo, 56 kb/s
Stream mapping:
  Stream #0.0 -> #0.0
  Stream #0.1 -> #0.1
Unsupported codec (id=86018) for input stream #0.1