---
title: scaleFactor
framework: avfoundation
role: symbol
role_heading: Instance Property
path: avfoundation/avcapturescreeninput/scalefactor
---

# scaleFactor

Indicates the factor by which video buffers captured from the screen are to be scaled.

## Declaration

```swift
var scaleFactor: CGFloat { get set }
```

## Discussion

Discussion By default, AVCaptureScreenInput captures the video buffers from the display at a scale factor of 1.0 (no scaling). Set this property to scale the buffers by a given factor; for example a 320x240 capture area with a scaleFactor of 2.0 produces video buffers at 640x480.

## See Also

### Setting video capture options

- [minFrameDuration](avfoundation/avcapturescreeninput/minframeduration.md)
- [cropRect](avfoundation/avcapturescreeninput/croprect.md)