mp3 to aac CLI encoding

[nkk]

mpg123 -q -w - src.mp3|faac -o dst.aac -

is it most optimal way to recode from mp3 to aac?

[Inspector.Gadget]

Why not use Nero AAC, which places higher in ABX testing than FAAC? Others may be able to speak to whether decoding with a LAME executable might offer some advantage over mpg123.

[nkk]

Inspector.Gadget, thank you very much, now I am using something like this:

lame --decode 01.mp3 -|neroAacEnc -ignorelength -lc -q 0.4 -if - -of 01.m4a