If you see a small white rectangle with the letters "SD" in the upper left of the frame while streaming content on any of the WBTVD portals or apps it means that this content is only available in a lower resolution and not in HD or multiple bit rates. We are actively working to replace all "SD" streams with "HD" versions but it will take some time.

Below is a reference picture of this ID Mark:

Below is a frame grab of the ID Mark used in context on Gilligan's Island:

Thank you!