---
title: kVTScalingMode_CropSourceToCleanAperture
framework: videotoolbox
role: symbol
role_heading: Global Variable
path: videotoolbox/kvtscalingmode_cropsourcetocleanaperture
---

# kVTScalingMode_CropSourceToCleanAperture

The source image buffer’s clean aperture is scaled to the destination clean aperture.

## Declaration

```swift
let kVTScalingMode_CropSourceToCleanAperture: CFString
```

## Discussion

Discussion The destination pixel aspect ratio is set on the destination image buffer.

## See Also

### Scaling Modes

- [kVTScalingMode_Normal](videotoolbox/kvtscalingmode_normal.md)
- [kVTScalingMode_Letterbox](videotoolbox/kvtscalingmode_letterbox.md)
- [kVTScalingMode_Trim](videotoolbox/kvtscalingmode_trim.md)