Each of the two video input planes behind the presenter's desk is set up using a Media Bundle: VirtualSet/Media/VideoBundle_01 and VirtualSet/Media/VideoBundle_02. Each of these bundles has a corresponding folder that holds its Media Framework Assets, named with the _InnerAssets suffix.
To learn how to set up Media Bundles from scratch, see the AJA Media I/O Quick Start Guide or Blackmagic Media I/O Quick Start Guide .
One thing to note about the Media Bundles in the Virtual Studio showcase is that they don't use the default Blueprint class that is used by most Media Bundle Assets.
Typically, when you drop a Media Bundle Asset into a Level, a new BP_MediaBundle_Plane_16-9 Actor is automatically spawned to represent the video in the 3D space of the Level. This default Blueprint contains a Plane Component, which is automatically set up to refer to the Media Texture created in the bundle's _InnerAssets folder. It also contains a MediaSound component that handles playing back the audio from the associated media source.
In the Virtual Studio, the Media Bundle Assets are instead represented in the Level by a custom subclass of the BP_MediaBundle_Plane_16-9 Blueprint Actor: VirtualSet/Blueprints/VirtualSetMediaInput. This subclass acts just like its parent, except that it also expects to have a specific camera Actor assigned to it as a child in the World Outliner. You'll notice that each of the two video planes in the Level has a camera as a child:
This custom VirtualSetMediaInput subclass adds the ability to show and hide the plate in the Editor viewport, and to configure the distance between the plate and its assigned camera. When you select either the VirtualSetMediaInput1 or VirtualSetMediaInput2 Actor, you can set these options in the Plate category of the Details panel:
Double-click the Blueprint class to see its Construction Script and other functions if you want to see how these settings are implemented.