1-5
: VBR (higher value -\> higher bitrate)
--w, --bandwith \<n\>
-: Frequency bandwith (lowpass cut-off frequency) in Hz. Available on
+-w, --bandwidth \<n\>
+: Frequency bandwidth (lowpass cut-off frequency) in Hz. Available on
AAC LC only.
-a, --afterburner \<n\>