default AAC codec is better choice than reencoding to mp3

Please note that converting to MP3 isn’t best choice if a device can play AAC

ffmpeg can convert aax to aac without reencoding. It gives the same quality as aax file and sligthly lower filesize

Example command:

ffmpeg -activation_bytes bbbbbbbb -i "C:\Users\aaaaaaa\OpenAudible\aax\ccccc.AAX" -vn -c:a copy -map_metadata 0:g "ccccc.m4b"

[karolzlot]

I agree.

Aax, m4a and m4b are all containers for AAC

It seems that m4b can also support chapters, mp3 and m4a don’t support them

If aax can be converted to m4b when small enough is should be, if it is too big then it can be converted to m4a instead

Or just always convert to m4a, it is still better than reencoding to mp3

[cytec]

@openaudible just use .m4a instead 😉 still better than transcoding to mp3

EDIT: i’ve noticed that when transcoding to mp3 from aax directly it kind of “skipps” or “laggs” a few times trough out the file when playing it… basically you’ll hear a word 2-3 times