cdtank@ubuntu:~$ time ffmpeg -i video-convert/Beverly-Hills-Chihuahua-2-trailer-1080p-HDTN.mp4 -y -ac 2 -acodec libmp3lame -aq 5 -qscale 10 video-convert/converted/beverly.flv
FFmpeg version SVN-r26402, Copyright (c) 2000-2011 the FFmpeg developers
  built on Jan 28 2011 19:41:40 with gcc 4.4.3
  configuration: --enable-gpl --enable-version3 --enable-nonfree --enable-postproc --enable-libfaac --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libxvid --enable-x11grab --enable-libmp3lame
  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
  libpostproc   51. 2. 0 / 51. 2. 0
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'video-convert/Beverly-Hills-Chihuahua-2-trailer-1080p-HDTN.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 1
    compatible_brands: isom
    creation_time   : 2010-10-22 09:09:12
    encoder         : Yamb 2.1.0.0 [http://yamb.unite-video.com]
  Duration: 00:02:05.54, start: 0.000000, bitrate: 10157 kb/s
    Stream #0.0(und): Video: h264, yuv420p, 1920x1080 [PAR 1:1 DAR 16:9], 9898 kb/s, 23.98 fps, 23.98 tbr, 2500k tbn, 47.95 tbc
    Metadata:
      creation_time   : 2010-10-22 08:20:03
    Stream #0.1(und): Audio: aac, 48000 Hz, 5.1, s16, 256 kb/s
    Metadata:
      creation_time   : 2010-10-22 09:09:14
[buffer @ 0x33650f0] w:1920 h:1080 pixfmt:yuv420p
[libmp3lame @ 0x3387540] flv does not support that sample rate, choose from (44100, 22050, 11025).
Output #0, flv, to 'video-convert/converted/beverly.flv':
  Metadata:
    major_brand     : isom
    minor_version   : 1
    compatible_brands: isom
    creation_time   : 2010-10-22 09:09:12
    encoder         : Lavf52.93.0
    Stream #0.0(und): Video: flv, yuv420p, 1920x1080 [PAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 1k tbn, 23.98 tbc
    Metadata:
      creation_time   : 2010-10-22 08:20:03
    Stream #0.1(und): Audio: libmp3lame, 48000 Hz, 2 channels, s16, 64 kb/s
    Metadata:
      creation_time   : 2010-10-22 09:09:14
Stream mapping:
  Stream #0.0 -> #0.0
  Stream #0.1 -> #0.1
Could not write header for output file #0 (incorrect codec parameters ?)