---
title: "init(refreshRate:formatDescription:)"
framework: avfoundation
role: symbol
role_heading: Initializer
path: "avfoundation/avdisplaycriteria/init(refreshrate:formatdescription:)"
---

# init(refreshRate:formatDescription:)

Creates a display criteria object with the specified refresh rate and format description.

## Declaration

```swift
init(refreshRate: Float, formatDescription: CMFormatDescription)
```

## Parameters

- `refreshRate`: The requested screen refresh rate.
- `formatDescription`: An object that describes the format of the video.