[FFmpeg-user] How to enforce VBR minimum bitrate

sooksin at expressinmusic.com sooksin at expressinmusic.com
Mon Jun 4 10:03:12 EEST 2018

Hi experts!


I am currently using ffmpeg as a solution to audio file conversion and


I understand that my setting (-q:a 5) below should produce output with
bitrate range in between 120-150kbps, or sometimes even lower than that if
the input already in being a lower bitrate than requested.


By using VBR Encoding, is there an option that is able to constrain the
bitrate minimum at 128kbps?


ffmpeg -i "input" -af "silenceremove=0:0:0:-1:1:-80dB,
dynaudnorm=p=1:m=3:r=1" -vn -acodec libmp3lame -q:a 5 -ar 44100 "output.mp3"


Please kindly advise. Thanks!



Sook Sin


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