Here are the packages with brief descriptions (if available):

[detail level 1234]

▼Nnagra
▼Ninsight
▼Nagent	Contains classes used by an application to report player metrics to the Insight servers
Nutils	Contains utility classes necessary for declaring player metrics
▼Notv
▼Nsdk	Contains classes enabling playback and control clear/encrypted content, track selection and logging, as well as player event listeners
Ndrm	Contains classes concerned with digital rights management: information on a device's supported DRM systems and related security levels, and default implementations of DRM initialization, session management and license acquisition for encrypted DASH playback
Ninfo	Gather information about the device the SDK is running on
Noffline	Contains classes that enable downloading of content for offline playback
Nprm	Contains classes concerned with Nagra Persistent Rights Management (PRM): enabling initialization of Nagra PRM and license acquisition for encrypted HLS playback
Nstatistics	Contains classes providing statistics concerning the playback of content, and the player event timeline which supports application performance analysis
Nthumbnail	Contains classes enabling an application to render DASH thumbnails
Nwatermark	Contains classes to set up and control watermarks unique to the video content; powered by NexGuard QuickMark