It's been a while since that I set this up, so take this with a grain of salt. I have these two plugins installed:
- Chapter Segments Provider
- The older Intro Skipper
I'm honestly not sure if I even need both - maybe the Chapter Segments Provider is unnecessary, even though it's official and newer. I don't understand exactly how it works from the docs.
However, Intro Skipper gives you a new scheduled task named "Detect and Analyze Media Segments". Use this to extract metadata about media segments from your library.
Now that the server knows about some media segments you need a client that can handle them. I've had success with the Android TV App (check the settings) and the Web interface should support them too.
I didn't need to configure anything aside from that, as far as I can remember.
I don't know anything about Android AOSP, so I found this clarification important: