Fantastic

[jessearmstrong]

I am so pleased to find this!

The only thing that would make it perfect is being able to combine into m4b. Let me know how I can buy you a coffee.

Edit: Duh, just saw the link in the README.. incoming!

[PsychedelicPalimpsest]

Happy you like it, adding in M4B support should be quite simple for me to add, the only issue is it will be quite a bit slower to encode, but I can certainly add in the option.

EDIT: After some experimentation the encode is SO SLOW it would be impracticable to even use it, from my testing ffmpeg is giving me speeds of 7x, meaning for a 20 hour audiobook it could take approximately 3 hours to encode.
EDIT 2: If you wish to try it out here is the experimental code with the change: https://gist.github.com/PsychedelicPalimpsest/2e68523a783b4cac534a9cd122d9c84e