---
title: nominalFrameRate
framework: avfoundation
role: symbol
role_heading: Instance Property
path: avfoundation/avassettrack/nominalframerate
---

# nominalFrameRate

The frame rate of the track, in frames per second.

## Declaration

```swift
var nominalFrameRate: Float { get }
```

## Discussion

Discussion The nominal frame rate indicates the number of frames per second for tracks that contain a full frame per media sample. For field-based (interlaced) video tracks, the value of this property indicates the field rate, not the frame rate.