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