$ ffmpeg -i 0234.mp4 -sameq 0234.mpg
ffmpeg version 0.8.7, Copyright (c) 2000-2011 the FFmpeg developers
  built on Nov 22 2011 06:59:46 with gcc 4.6.2
  configuration: --prefix=/usr --extra-cflags='-Wall -g ' --cc='ccache cc' --enable-shared --enable-libmp3lame --enable-gpl --enable-nonfree --enable-libdirac --disable-decoder=libdirac --enable-libvorbis --enable-pthreads --enable-libfaac --enable-libxvid --enable-postproc --enable-x11grab --enable-libgsm --enable-libtheora --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libx264 --enable-libspeex --enable-nonfree --disable-stripping --enable-libschroedinger --disable-encoder=libschroedinger --enable-version3 --enable-libopenjpeg --enable-libvpx --enable-librtmp --enable-avfilter --enable-frei0r --enable-libopencv --enable-libfreetype --enable-libvo-aacenc --disable-decoder=amrnb --enable-libvo-amrwbenc --enable-libaacplus --libdir=/usr/lib/x86_64-linux-gnu --enable-libdc1394 --disable-altivec --disable-armv5te --disable-armv6 --disable-vis --shlibdir=/usr/lib/x86_64-linux-gnu
  libavutil    51.  9. 1 / 51. 54.100
  libavcodec   53.  8. 0 / 53. 61.100
  libavformat  53.  5. 0 / 53. 32.100
  libavdevice  53.  1. 1 / 53.  1. 1
  libavfilter   2. 23. 0 /  2. 23. 0
  libswscale    2.  0. 0 /  2.  1.100
  libpostproc  51.  2. 0 / 51.  2. 0
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '0234.mp4':
  Metadata:
    major_brand     : mp42
    minor_version   : 0
    compatible_brands: mp42isom
    creation_time   : 2008-06-02 10:29:55
    comment         : FUJIFILM DIGITAL CAMERA
    comment-eng     : FUJIFILM DIGITAL CAMERA
  Duration: 00:07:03.15, start: 0.000000, bitrate: 3138 kb/s
    Stream #0:0(eng): Video: mpeg4 (Advanced Simple Profile) (mp4v / 0x7634706D), yuv420p, 640x480 [SAR 1:1 DAR 4:3], 3006 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 29.97 tbc
    Metadata:
      creation_time   : 2008-06-02 10:29:55
      handler_name    :
    Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, mono, s16, 127 kb/s
    Metadata:
      creation_time   : 2008-06-02 10:29:55
      handler_name    :
    Stream #0:2(eng): Data: none (mp4s / 0x7334706D)
    Metadata:
      creation_time   : 2008-06-02 10:29:55
      handler_name    :
    Stream #0:3(eng): Data: none (mp4s / 0x7334706D)
    Metadata:
      creation_time   : 2008-06-02 10:29:55
      handler_name    :
File '0234.mpg' already exists. Overwrite ? [y/N] y
[buffer @ 0xc46900] w:640 h:480 pixfmt:yuv420p tb:1/1000000 sar:1/1 sws_param:
[mpeg @ 0xc80980] VBV buffer size not set, muxing may fail
Output #0, mpeg, to '0234.mpg':
  Metadata:
    major_brand     : mp42
    minor_version   : 0
    compatible_brands: mp42isom
    creation_time   : 2008-06-02 10:29:55
    comment         : FUJIFILM DIGITAL CAMERA
    comment-eng     : FUJIFILM DIGITAL CAMERA
    encoder         : Lavf53.32.100
    Stream #0:0(eng): Video: mpeg1video, yuv420p, 640x480 [SAR 1:1 DAR 4:3], q=2-31, 200 kb/s, 90k tbn, 29.97 tbc
    Metadata:
      creation_time   : 2008-06-02 10:29:55
      handler_name    :
    Stream #0:1(eng): Audio: mp2, 48000 Hz, mono, s16, 128 kb/s
    Metadata:
      creation_time   : 2008-06-02 10:29:55
      handler_name    :
Stream mapping:
  Stream #0.0 -> #0.0
  Stream #0.1 -> #0.1
Press [q] to stop, [?] for help
[mpeg1video @ 0xc80f20] warning, clipping 1 dct coefficients to -255..255
    Last message repeated 1 times     0kB time=00:00:00.03 bitrate=   0.0kbits/s dup=0 drop=12349