The m4a and m4b extensions were originally introduced by Apple. mp4, m4a, and m4b are alternative filename extensions for the MPEG-4 Part 14 container format.

To download a book from Audible as aax instead of aa, choose 'Enhanced' from the 'Audio Quality' dropdown in the view for downloading a book.Īax files are encrypted mp4 / m4a / m4b files so the ffmpeg command above does not re-encode audio and it preserves metadata such as chapters. If you try to use the ffmpeg command above with an aa file instead of an aax file, it results in an error like Option activation_bytes not found. (I edited the command above based on the comments by LiWang and marcus erronius to replace output.m4a mv output.m4 with output.m4b and to replace -vn -c:v copy with -c copy.) If your sed is GNU sed, replace sed -i '' with sed -i.Īfter that run a command like this: ffmpeg -activation_bytes youractivationkey -i input.aax -c copy output.m4b audible-activator.py results in an error like 'chromedriver' executable needs to be in PATH even if chromedriver is on the path or in the audible-activator directory. If you do not run the sed command that changes the value of the chromedriver_path variable. Then enter your Audible username and password and wait for a while for the eight character activation key to be printed. Sed -i '' 's,chromedriver_path = './chromedriver',chromedriver_path = '/usr/local/bin/chromedriver',' audible-activator.py With its help, you can quickly convert iTunes audiobooks to MP3 and more.First run these commands: brew install chromedriver ffmpeg It can not only convert all sorts of common audios to several widely-supported audio formats like MP3, but also can download iTunes audios, Apple Music, and Audible to a more versatile format. Tunelf Audio Converter is a special yet professional audio converter.

There are a number of audio converters claiming that they can convert iTunes audios, but only 1% of audio converter can handle the conversion and Tunelf Audio Converter is a great one. The best method for this task is to use an iTunes audiobook converter. While you can listen to them on iTunes or Apple Music, it is not possible to use them with other media players or devices.Īs a result, you may need to remove FairPlay DRM protection from Apple and convert iTunes audiobooks to more compatible formats for breaking this limitation.

There is a limitation on this kind of format from Apple Music. If you’ve ever purchased audiobooks from iTunes or download songs from Apple Music, you’re probably familiar with the M4A or M4B file format. Method to Transfer Audiobooks from iTunes to Audible

How do i use audible on a macbook