sammel@sammel-ub:~/Videos/youtube/felsen$ ffmpeg -i 946_1263.MOV -vcodec mpeg4 -b 4000k -s 640x480 -r 25 -acodec aac -ab 128k Felsen_1.asf
ffmpeg version git-2012-01-20-23934e5 Copyright (c) 2000-2012 the FFmpeg developers
  built on Jan 20 2012 19:34:09 with gcc 4.4.3
  configuration: --enable-avfilter --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --disable-stripping --enable-runtime-cpudetect --enable-libmp3lame --enable-libfaac --enable-nonfree --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libxvid --enable-libx264 --enable-libopencore-amrnb --enable-version3 --enable-libopencore-amrwb --enable-version3 --enable-libdc1394 --enable-libvpx
  libavutil      51. 34.101 / 51. 34.101
  libavcodec     53. 57.105 / 53. 57.105
  libavformat    53. 30.100 / 53. 30.100
  libavdevice    53.  4.100 / 53.  4.100
  libavfilter     2. 59.101 /  2. 59.101
  libswscale      2.  1.100 /  2.  1.100
  libswresample   0.  6.100 /  0.  6.100
  libpostproc    52.  0.100 / 52.  0.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '946_1263.MOV':
  Metadata:
    major_brand     : qt
    minor_version   : 0
    compatible_brands: qt
    creation_time   : 2012-04-27 04:21:06
    comment         : KODAK Zi8 Pocket Video Camera
    comment-eng     : KODAK Zi8 Pocket Video Camera
  Duration: 00:00:31.13, start: 0.000000, bitrate: 11252 kb/s
    Stream #0:0(eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 11115 kb/s, 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc
    Metadata:
      creation_time   : 2012-04-27 04:21:06
      handler_name    :  Ambarella AVC
    Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, s16, 128 kb/s
    Metadata:
      creation_time   : 2012-04-27 04:21:06
      handler_name    :  Ambarella AAC
Please use -b:a or -b:v, -b is ambiguous
[buffer @ 0xae77d60] w:1280 h:720 pixfmt:yuv420p tb:1/1000000 sar:1/1 sws_param:
[scale @ 0xae6c280] w:1280 h:720 fmt:yuv420p -> w:640 h:480 fmt:yuv420p flags:0x4
[NULL @ 0xae82dc0] Codec is experimental but experimental codecs are not enabled, see -strict -2
Output #0, asf, to 'Felsen_1.asf':
  Metadata:
    major_brand     : qt
    minor_version   : 0
    compatible_brands: qt
    creation_time   : 2012-04-27 04:21:06
    comment         : KODAK Zi8 Pocket Video Camera
    comment-eng     : KODAK Zi8 Pocket Video Camera
    Stream #0:0(eng): Video: mpeg4, yuv420p, 640x480 [SAR 4:3 DAR 16:9], q=2-31, 4000 kb/s, 90k tbn, 25 tbc
    Metadata:
      creation_time   : 2012-04-27 04:21:06
      handler_name    :  Ambarella AVC
    Stream #0:1(eng): Audio: none, 48000 Hz, stereo, s16, 128 kb/s
    Metadata:
      creation_time   : 2012-04-27 04:21:06
      handler_name    :  Ambarella AAC
Stream mapping:
  Stream #0:0 -> #0:0 (h264 -> mpeg4)
  Stream #0:1 -> #0:1 (aac -> aac)
Error while opening encoder for output stream #0:1 - maybe incorrect parameters such as bit_rate, rate, width or height
sammel@sammel-ub:~/Videos/youtube/felsen$