- # NB: MPD manifest may contain direct URLs to unfragmented media.
- # No fragments key is present in this case.
+ # If there is a fragments key available then we correctly recognized fragmented media.
+ # Otherwise we will assume unfragmented media with direct access. Technically, such
+ # assumption is not necessarily correct since we may simply have no support for
+ # some forms of fragmented media renditions yet, but for now we'll use this fallback.