---
title: preferredViewingMode
framework: realitykit
role: symbol
role_heading: Instance Property
path: realitykit/videoplaybackcontroller/preferredviewingmode
---

# preferredViewingMode

Do we want to play stereo video in mono or stereo? Default is to play in stereo.

## Declaration

```swift
@MainActor @preconcurrency var preferredViewingMode: VideoPlaybackController.ViewingMode { get set }
```