---
title: AVVideoCleanApertureWidthKey
framework: avfoundation
role: symbol
role_heading: Global Variable
path: avfoundation/avvideocleanaperturewidthkey
---

# AVVideoCleanApertureWidthKey

A key to access the width of video that’s free from transition artifacts caused by signal encoding.

## Declaration

```swift
let AVVideoCleanApertureWidthKey: String
```

## Discussion

Discussion The value for this key is an instance of NSNumber.

## See Also

### Clean aperture

- [AVVideoCleanApertureKey](avfoundation/avvideocleanaperturekey.md)
- [AVVideoCleanApertureHeightKey](avfoundation/avvideocleanapertureheightkey.md)
- [AVVideoCleanApertureVerticalOffsetKey](avfoundation/avvideocleanapertureverticaloffsetkey.md)
- [AVVideoCleanApertureHorizontalOffsetKey](avfoundation/avvideocleanaperturehorizontaloffsetkey.md)