@Brion Vibber (WMF): I just saw that you recently made an effort in cleaning up the docu. I wonder if the sections "Roadmap" and "Notes" need to be kept. I guess that the "Roadmap" should somehow be part of some Phabricator tasks and the "Notes" date from 2013 and appear to be very WMF specific.
Topic on Extension talk:TimedMediaHandler
I just moved the respective content to subpages. I guess that this is acceptable.