---
title: horizontalFieldOfView
framework: coremedia
role: symbol
role_heading: Type Property
path: coremedia/cmformatdescription/extensions-swift.struct/key/horizontalfieldofview
---

# horizontalFieldOfView

Horizontal field of view in thousandths of a degree (i.e., 123456 is 123.456 degrees).

## Declaration

```swift
@backDeployed(before: macOS 26.0, iOS 26.0, tvOS 26.0, watchOS 26.0, visionOS 26.0)
static var horizontalFieldOfView: CMFormatDescription.Extensions.Key { get }
```