The MediaEvent class describes a container that developers can use to instruct the player to run specific blocks of code at specific moments of time. Objects extending and implementing this class can be added to the player's main queue and can also be attached to a specific MediaUnit object, for runtime triggering.

MediaOverlay describes any overlay that the MediaPlayer instance needs to render during playback.

The MediaUnit class represents a clip that's ready to be rendered by the player. A media unit also references an list of MediaOverlay objects, defining the overlays connected to the unit.

An VASTAdBreak object defines an ad break for which the builder plugin will try to generate MediaUnits and insert them into the playlist.

Describes the current lifecycle state of an MediaEvent.

Describes the position the overlay should take when placed on-screen by the player.

Specifies how the unit should handle seeking through multiple ad breaks.

Specifies how the controls bar should be displayed for a media unit.