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# displayVideoZoomFactorMultiplier

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

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

## 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`](/documentation/AVFoundation/AVCaptureDevice/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.

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