podcats VS m4b-mp3-chapters-from-cuesheets

Podcats sounds like something you should look into.

Sorry, I’m not familiar with programs on Mac. I use these scripts but they are Windows only.

Prologue reads embedded chapters. If you have Windows, see here for a method to embed chapters from a cue file to mp3 or m4b.

You could also merge the chapter tracks into a single file with embedded chapters, but I think there is a chapter limit of 255 for m4b files, mp3 I’ve had issues with large chapter numbers as well but I’m unsure what the limit is. There’s a guide here on doing that https://github.com/TheMetalCenter/m4b-mp3-chapters-from-cuesheets thought it is windows only.

I use this method to change the chapters in all my audiobooks https://github.com/TheMetalCenter/m4b-mp3-chapters-from-cuesheets

I personally keep an audiobook folder on my NAS (or network drive) and manage it with MusicBee (the guide above uses mp3tag). I manually add my own metadata (guide above gives option to do manual or scrape it from audible). Then I update Plex library, which points to that directory, and adds any new books to Plex. I merge all my audio files to a single chapterized file before adding to MusicBee using https://github.com/TheMetalCenter/m4b-mp3-chapters-from-cuesheets but the guide above has an alternate way to do it.

Do you have Windows or Mac? If Windows, this is the method I use to add/edit my audiobook's chapters. It's all done from bat files with ruby and python scripts, so a little messy but it gets the job done. You'd want to do scenario 6.