jellysub VS AudioBookConverter

To summarise what we've gotten to so far: - Jellyfin web can do this using Instant Mix feature, but instant mix is at present pretty basic (see discussion here: https://www.reddit.com/r/jellyfin/comments/o0eic8/what_is_instant_mix_actually_based_on_also_is/). It won't work very well at the level of "Artist" but starting from a specific track or album produces a pretty good mix for some music in my library. Instant mixes can be saved as playlists. - Some Jellyfin apps can do this: especially symfonium (android) has advanced features for making mixes. The only limitation here seems to be saving playlists back to jellyfin server. And if you don't have an android phone and sonixd has a very limited ability to create a (completely, and imho unhelpfully) random playlist. - There are more convoluted solutions. Jellyfin users can try to use Subsonic clients with jellyfin by installing a server shim, but it seems this isn't being developed anymore and I wasn't able to get it running. It is also possible to use jellyfin as an MPD server, so more generic clients can be used here too.

For the Jellyfin API it might be worth adding https://github.com/nvllsvm/jellysub, it's an API compatibility layer to let Subsonic-compatible apps query Jellyfin.

Subsonic

https://github.com/yermak/AudioBookConverter Apparantly this is a good program to use. You should be able to convert them to a single m4b file and it should keep all the chapters intact.

Source: https://github.com/yermak/AudioBookConverter

Audiobookconverter can combine multiple mp3s into a single mp4

Audiobook Converter - Takes anything not an M4B and makes it an M4B (and can add some basic metadata to an M4B). For Plex, I've found it useful to have one file for playback vs. all the mp3 files (plus it's a lot cleaner)

I also had this issue with Audiobookbinder and switched to AudiobookConverter for longer book bindings

However, I only went through the trouble because I didn't want audio quality to be affected at all (nothing to be encoded again, only removed). If you are not too concerned about audio quality, there is definitely programs out there on Mac that can chapterize files. M4btool is pretty powerful and there is Audiobook converter. I've heard AudioBookBinder might work as well, though I think it is older at this point.

some audiobooks come in multiple mp3 so i merge a books tracks all into one file to save the headache of adding meta data to sometimes 100s of files for one book. I use https://github.com/yermak/AudioBookConverter to merge mp3s into m4b which I've seen being a standard for audiobook file format but mp3 will also work if you like that extension.

Yermak's AudioBookConverter is phenomenal. Development is on hiatus due to the war in Ukraine, but the most recent version is still available on Github.