An N3 widget is a unit that sits on the publisher's website as a way to display videos. Of the various types of widget, some will display a single video and some will display a playlist of videos.
If the publisher wants to use N3 primarily to generate revenue, he can choose to only show high-paying sponsored videos.
If the publisher wants to use N3 primarily to show additional content and is happy to make some extra money, choose the standard playlist widgets
Text link widget
MPU widget 250 x 250 pixels (light background)
MPU widget 250 x 250 pixels (dark background)
MPU widget 300 x 250 pixels (light background)
MPU widget 300 x 250 pixels (dark background)
Full-size video player
Widget 1 - Hotlist (playlist widget featuring sponsored videos)
Widget 1 Fixed size 120 x 212 pixels
Widget 2 Customisable size
Widget 3 MPU sizes: 250 x 250 pixels or 300 x 250 pixels