ffmpeg -i test-0000.mpeg output.dv
FFmpeg version SVN-rUNKNOWN, Copyright (c) 2000-2007 Fabrice Bellard, et al.
  configuration: --prefix=/usr --libdir=${prefix}/lib --shlibdir=${prefix}/lib --incdir=${prefix}/include/ffmpeg --enable-shared --enable-libmp3lame --enable-gpl --enable-libfaad --mandir=${prefix}/share/man --enable-libvorbis --enable-pthreads --enable-libfaac --enable-xvid --enable-libdts --enable-amr_nb --enable-amr_wb --enable-pp --enable-libogg --enable-libgsm --enable-x264 --enable-liba52 --enable-libtheora --extra-cflags=-Wall -g -fPIC -DPIC --cc=ccache cc --enable-swscaler
  libavutil version: 49.4.0
  libavcodec version: 51.40.2
  libavformat version: 51.11.0
  built on Mar 29 2007 13:39:06, gcc: 4.1.2 20061115 (prerelease) (Debian 4.1.1-21)
Input #0, avi, from 'test-0000.mpeg':
  Duration: 00:00:03.9, start: 0.000000, bitrate: 478 kb/s
  Stream #0.0: Video: mjpeg, yuvj420p, 568x400, 10.00 fps(r)
  Stream #0.1: Audio: mp2, 22050 Hz, mono, 32 kb/s
Output #0, dv, to 'output.dv':
  Stream #0.0: Video: dvvideo, yuv411p, 568x400, q=2-31, 200 kb/s, 10.00 fps(c)
  Stream #0.1: Audio: pcm_s16le, 22050 Hz, mono, 352 kb/s
Stream mapping:
  Stream #0.0 -> #0.0
  Stream #0.1 -> #0.1
[dv @ 0xffe8108]Can't initialize DV format!
Make sure that you supply exactly two streams:
     video: 25fps or 29.97fps, audio: 2ch/48Khz/PCM
     (50Mbps allows an optional second audio stream)
Could not write header for output file #0 (incorrect codec parameters ?)