[FFmpeg-user] libmp3lame -ab 128k produces a VBR stream

[Lou]

On Sat, Aug 31, 2013, at 03:13 AM, Bill Gates wrote:
> Hello,
> 
> I encode in MPEG4/MP3 to AVI files with the following command:
> 
> ffmpeg -i input.avi -vcodec mpeg4 -vtag XVID -s 640x480 -qscale 4 -g 50
> -bf
> 2 -acodec libmp3lame -ab 128k -y output.avi

Please include the complete ffmpeg console output.