---
title: displayVideoZoomFactorMultiplier
framework: avfoundation
role: symbol
role_heading: Instance Property
path: avfoundation/avcapturedevice/displayvideozoomfactormultiplier
---

# displayVideoZoomFactorMultiplier

A video zoom factor multiplier to use when displaying zoom information in a user interface.

## Declaration

```swift
var displayVideoZoomFactorMultiplier: CGFloat { get }
```

## Discussion

Discussion Some system user interfaces, like the macOS Video Effects Menu, display a video zoom factor value in a way most appropriate for visual presentation, which might differ from the videoZoomFactor property value. Your app can key-value observe this property to update the display video zoom factor values in its user interface to stay consistent with Apple’s system UIs.

## See Also

### Inspecting zoom factors

- [minAvailableVideoZoomFactor](avfoundation/avcapturedevice/minavailablevideozoomfactor.md)
- [maxAvailableVideoZoomFactor](avfoundation/avcapturedevice/maxavailablevideozoomfactor.md)
- [virtualDeviceSwitchOverVideoZoomFactors](avfoundation/avcapturedevice/virtualdeviceswitchovervideozoomfactors.md)
- [dualCameraSwitchOverVideoZoomFactor](avfoundation/avcapturedevice/dualcameraswitchovervideozoomfactor.md)