---
title: kCMFormatDescriptionKey_CleanApertureHorizontalOffsetRational
framework: coremedia
role: symbol
role_heading: Global Variable
path: coremedia/kcmformatdescriptionkey_cleanaperturehorizontaloffsetrational
---

# kCMFormatDescriptionKey_CleanApertureHorizontalOffsetRational

A key that identifies the clean aperture horizontal offset rational value.

## Declaration

```swift
let kCMFormatDescriptionKey_CleanApertureHorizontalOffsetRational: CFString
```

## See Also

### Constants

- [kCMFormatDescriptionKey_CleanApertureHeight](coremedia/kcmformatdescriptionkey_cleanapertureheight-swift.var.md)
- [kCMFormatDescriptionKey_CleanApertureHeightRational](coremedia/kcmformatdescriptionkey_cleanapertureheightrational.md)
- [kCMFormatDescriptionKey_CleanApertureHorizontalOffset](coremedia/kcmformatdescriptionkey_cleanaperturehorizontaloffset-swift.var.md)
- [kCMFormatDescriptionKey_CleanApertureVerticalOffset](coremedia/kcmformatdescriptionkey_cleanapertureverticaloffset-swift.var.md)
- [kCMFormatDescriptionKey_CleanApertureVerticalOffsetRational](coremedia/kcmformatdescriptionkey_cleanapertureverticaloffsetrational.md)
- [kCMFormatDescriptionKey_CleanApertureWidth](coremedia/kcmformatdescriptionkey_cleanaperturewidth-swift.var.md)
- [kCMFormatDescriptionKey_CleanApertureWidthRational](coremedia/kcmformatdescriptionkey_cleanaperturewidthrational.md)