If you've ever wanted to be a Virtual Reality (VR) Spectator (from a third-person perspective) while others are interacting with a VR environment (from a first-person perspective), then Unreal Engine 4's
(UE4) VR Spectator Screen is the ideal feature for you. While running the VR Spectator Screen, you'll be able to observe other players with your computer monitor (or television), which is valuable
when you're gathering feedback on an immersive VR experience.
Images Courtesy of GhostPaint.com
VR Spectator Screen Perspective
VR Player's HMD Perspective
On the left side, you (the spectator) are watching this artist paint a brick wall in VR, while on the right side, the artist is focusing on the painting in VR.
Depending on the Head Mounted Display (HMD) manufacturer, a VR Spectator Screen could be synonymous with a VR Social Screen; or VR Spectator Mode could be synonymous with VR Mirror Mode.
Within the context of this documentation, the Spectator Screen is a standard output device (such as a computer monitor or television) that is connected to a VR device. Additionally,
enabling Spectator Mode means that you can observe (or, in certain scenarios, interact) with the VR experience while a player uses a HMD in a VR environment.