[FFmpeg-user] mp3 bitrate vlc

[geon at post.cz]

Hi,

with version - FFmpeg version SVN-r22048, Copyright (c) 2000-2010 the
FFmpeg developers  built on Feb 25 2010 17:20:36 with gcc 4.3.3 - was
this issue ok - vlc player showed bitrate correctly.

Now vlc shows bitrate 56kbps even if the ffmpeg runs with 128:

C:\prg\ffmpeg\bin>ffmpeg.exe -y -i in.mp3 -ab 128k out.mp3
ffmpeg version git-N-30155-g01a73d6, Copyright (c) 2000-2011 the FFmpeg
develope
rs
  built on May 23 2011 03:43:18 with gcc 4.5.3
  configuration: --enable-gpl --enable-version3 --enable-memalign-hack
--enable-
runtime-cpudetect --enable-avisynth --enable-bzlib --enable-frei0r
--enable-libo
pencore-amrnb --enable-libopencore-amrwb --enable-libfreetype
--enable-libgsm --
enable-libmp3lame --enable-libopenjpeg --enable-librtmp
--enable-libschroedinger
 --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libvpx
--enabl
e-libx264 --enable-libxavs --enable-libxvid --enable-zlib
--pkg-config=pkg-confi
g
  libavutil    51.  2. 1 / 51.  2. 1
  libavcodec   53.  6. 0 / 53.  6. 0
  libavformat  53.  2. 0 / 53.  2. 0
  libavdevice  53.  0. 0 / 53.  0. 0
  libavfilter   2. 10. 0 /  2. 10. 0
  libswscale    0. 14. 0 /  0. 14. 0
  libpostproc  51.  2. 0 / 51.  2. 0
[mp3 @ 01EA53C0] max_analyze_duration 5000000 reached at 5016000
Input #0, mp3, from 'in.mp3':
  Metadata:
    album           : The Very Best
    date            : 2001
    track           : 7
  Duration: 00:02:17.08, start: 0.000000, bitrate: 320 kb/s
    Stream #0.0: Audio: mp3, 48000 Hz, stereo, s16, 320 kb/s
Output #0, mp3, to 'out.mp3':
  Metadata:
    TALB            : The Very Best
    TDRL            : 2001
    TRCK            : 7
    TSSE            : Lavf53.2.0
    Stream #0.0: Audio: libmp3lame, 48000 Hz, stereo, s16, 128 kb/s
Stream mapping:
  Stream #0.0 -> #0.0
Press [q] to stop, [?] for help
[mp3 @ 01EA5940] Header missingrate= 128.0kbits/s
Error while decoding stream #0.0
size=    2143kB time=137.11 bitrate= 128.0kbits/s
video:0kB audio:2142kB global headers:0kB muxing overhead 0.019191%


Is it a bug or do I miss something?
Thank you
PK