/usr/local/bin/ffmpeg -i vids/regie.avi -t 10 -r 25 -b 200 -ar 44100 -s qcif export/FAITHLESS.3gp
FFmpeg version SVN-r8479, Copyright (c) 2000-2007 Fabrice Bellard, et al.
  configuration: --enable-libmp3lame --enable-amr_nb --enable-encoder=FLV --enable-decoder=FLV --enable-encoder=H261 --enable-decoder=H261 --enable-encoder=H263 --enable-decoder=H263
  libavutil version: 49.4.0
  libavcodec version: 51.40.0
  libavformat version: 51.11.0
  built on Mar 22 2007 11:17:29, gcc: 4.0.0 20050519 (Red Hat 4.0.0-8)

Seems stream 0 codec frame rate differs from container frame rate: 30000.00 (30000/1) -> 25.00 (25/1)
Input #0, avi, from 'vids/regie.avi':
  Duration: 00:04:01.9, start: 0.000000, bitrate: 674 kb/s
  Stream #0.0: Video: mpeg4, yuv420p, 352x256, 25.00 fps(r)
  Stream #0.1: Audio: mp3, 44100 Hz, stereo, 64 kb/s
Output #0, 3gp, to 'export/FAITHLESS.3gp_3gp.3gp':
  Stream #0.0: Video: h263, yuv420p, 176x144, q=2-31, 0 kb/s, 25.00 fps(c)
  Stream #0.1: Audio: 0x0000, 44100 Hz, stereo, 64 kb/s
Stream mapping:
  Stream #0.0 -> #0.0
  Stream #0.1 -> #0.1
Unsupported codec for output stream #0.1