AudioBookConverter

There is also https://www.vorleser.net/ for german users. In case you want to take it a step further, you could convert the `mp3`s to `m4b` format (one file per audio book), which internally uses an `mp4` container aac codec, chapters for separation and extended metadata. It's well supported on iTunes / iPods / iPhone as well as Jellyfin, Kodi, Plex, etc. and the files have lower bitrates than mp3 providing similar quality. (see https://github.com/seanap/Plex-Audiobook-Guide#optional-auto...) There is also https://www.thorsten-voice.de/en/motivation-vision-english/ (see my comment below), if you would like to generate your own german audio books via TTS and AI. A self hosted audio book server is audiobookshelf (https://www.audiobookshelf.org/) which comes with an app that is open souce and supports offline listening. Tools to convert `mp3

Not OP, but if you're looking for a quick look, I use AudioBookConverter [1] that uses OpenJFX to execute ffmpeg commands to build M4B files. It's very clunky, especially when you install updates and such. But it gets the job done. [1] https://github.com/yermak/AudioBookConverter

I use ffmpeg for encoding audio and metadata extraction... very powerful and a really sophisticated tool, but handling timestamps I agree with you. Some caveats that I came across along the way: - Inaccurate time handling (https://github.com/yermak/AudioBookConverter/issues/21#issue...) - Incorrect handling of mp3 chapters https://github.com/sandreas/m4b-tool/issues/71#issuecomment-... If anyone who is interested in using ffmpeg in a docker container (without the dependencies / compiling stuff), this alias is pretty useful (with relative paths ;-): alias ffmpeg='docker run --rm -u $(id -u):$(id -g) -v "$PWD:$PWD" -w "$PWD" mwader/static-ffmpeg:4.3.2'

If you are looking for free german audio books, checkout - https://www.vorleser.net/ For a free conversion tool, checkout - https://github.com/sandreas/m4b-tool - https://github.com/gonzoua/AudioBookBinder - https://github.com/yermak/AudioBookConverter