this is with with ipod320 preset

root@media [/home/beta/public_html]# ffmpeg -i Wildlife.wmv -s 320x240 -r 30000/1001 -b 200k -bt 240k -vcodec libx264 -vpre ipod320 -acodec libfaac -ac 2 -ar 48000 -ab 192k 1.mp4
FFmpeg version SVN-r26402, Copyright (c) 2000-2011 the FFmpeg developers
  built on Nov 17 2011 00:28:12 with gcc 4.1.2 20080704 (Red Hat 4.1.2-51)
  configuration: --enable-shared --enable-gpl --enable-version3 --enable-nonfree --enable-pthreads --enable-x11grab --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libdc1394 --enable-libfaac --enable-libmp3lame --enable-libopenjpeg --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libxvid --enable-zlib
  libavutil     50.36. 0 / 50.36. 0
  libavcore      0.16. 1 /  0.16. 1
  libavcodec    52.108. 0 / 52.108. 0
  libavformat   52.93. 0 / 52.93. 0
  libavdevice   52. 2. 3 / 52. 2. 3
  libavfilter    1.74. 0 /  1.74. 0
  libswscale     0.12. 0 /  0.12. 0

Seems stream 1 codec frame rate differs from container frame rate: 1000.00 (1000/1) -> 29.97 (30000/1001)
Input #0, asf, from 'Wildlife.wmv':
  Metadata:
    SfOriginalFPS   : 299
    WMFSDKVersion   : 11.0.6001.7000
    WMFSDKNeeded    : 0.0.0.0000
    IsVBR           : 0
    title           : Wildlife in HD
    artist          :
    copyright       : © 2008 Microsoft Corporation
    comment         : Footage: Small World Productions, Inc; Tourism New Zealand | Producer: Gary F. Spradling | Music: Steve Ball
  Duration: 00:00:30.53, start: 8.000000, bitrate: 6880 kb/s
    Stream #0.0(eng): Audio: wmav2, 44100 Hz, 2 channels, s16, 192 kb/s
    Stream #0.1(eng): Video: vc1, yuv420p, 1280x720, 5942 kb/s, 29.97 tbr, 1k tbn, 1k tbc
[buffer @ 0x1f741800] w:1280 h:720 pixfmt:yuv420p
[scale @ 0x1f75c720] w:1280 h:720 fmt:yuv420p -> w:320 h:240 fmt:yuv420p flags:0xa0000004
[libx264 @ 0x1f74b6a0] broken ffmpeg default settings detected
[libx264 @ 0x1f74b6a0] use an encoding preset (e.g. -vpre medium)
[libx264 @ 0x1f74b6a0] preset usage: -vpre <speed> -vpre <profile>
[libx264 @ 0x1f74b6a0] speed presets are listed in x264 --help
[libx264 @ 0x1f74b6a0] profile is optional; x264 defaults to high
Output #0, mp4, to '1.mp4':
    Stream #0.0(eng): Video: libx264, yuv420p, 320x240, q=2-31, 200 kb/s, 90k tbn, 29.97 tbc
    Stream #0.1(eng): Audio: libfaac, 48000 Hz, 2 channels, s16, 192 kb/s
Stream mapping:
  Stream #0.1 -> #0.0
  Stream #0.0 -> #0.1
Error while opening encoder for output stream #0.0 - maybe incorrect parameters such as bit_rate, rate, width or height





==========================================================================================================
here is 2nd command without preset




root@media [/home/beta/public_html]# ffmpeg -i Wildlife.wmv -s 320x240 -r 30000/1001 -b 200k -bt 240k -vcodec libx264 -coder 0 -bf 0 -flags2 -wpred-dct8x8 -level 13 -maxrate 768k -bufsize 3M-acodec libfaac -ac 2 -ar 48000 -ab 192k 2.mp4
FFmpeg version SVN-r26402, Copyright (c) 2000-2011 the FFmpeg developers
  built on Nov 17 2011 00:28:12 with gcc 4.1.2 20080704 (Red Hat 4.1.2-51)
  configuration: --enable-shared --enable-gpl --enable-version3 --enable-nonfree --enable-pthreads --enable-x11grab --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libdc1394 --enable-libfaac --enable-libmp3lame --enable-libopenjpeg --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libxvid --enable-zlib
  libavutil     50.36. 0 / 50.36. 0
  libavcore      0.16. 1 /  0.16. 1
  libavcodec    52.108. 0 / 52.108. 0
  libavformat   52.93. 0 / 52.93. 0
  libavdevice   52. 2. 3 / 52. 2. 3
  libavfilter    1.74. 0 /  1.74. 0
  libswscale     0.12. 0 /  0.12. 0

Seems stream 1 codec frame rate differs from container frame rate: 1000.00 (1000/1) -> 29.97 (30000/1001)
Input #0, asf, from 'Wildlife.wmv':
  Metadata:
    SfOriginalFPS   : 299
    WMFSDKVersion   : 11.0.6001.7000
    WMFSDKNeeded    : 0.0.0.0000
    IsVBR           : 0
    title           : Wildlife in HD
    artist          :
    copyright       : © 2008 Microsoft Corporation
    comment         : Footage: Small World Productions, Inc; Tourism New Zealand | Producer: Gary F. Spradling | Music: Steve Ball
  Duration: 00:00:30.53, start: 8.000000, bitrate: 6880 kb/s
    Stream #0.0(eng): Audio: wmav2, 44100 Hz, 2 channels, s16, 192 kb/s
    Stream #0.1(eng): Video: vc1, yuv420p, 1280x720, 5942 kb/s, 29.97 tbr, 1k tbn, 1k tbc
[NULL @ 0x1edb5010] [Eval @ 0x7fff2c8beae0] Undefined constant or missing '(' in 'acodec'
[NULL @ 0x1edb5010] Unable to parse option value "acodec"
Invalid value '3M-acodec' for option 'bufsize'
root@media [/home/beta/public_html]#