---
title: nominalFrameRate
framework: avfoundation
role: symbol
role_heading: Type Property
path: avfoundation/avpartialasyncproperty/nominalframerate
---

# nominalFrameRate

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

## Declaration

```swift
static var nominalFrameRate: AVAsyncProperty<Root, Float> { get }
```

## Discussion

Discussion Use the load(_:isolation:) method to retrieve the property value. 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.

## See Also

### Loading frame-based characteristics

- [minFrameDuration](avfoundation/avpartialasyncproperty/minframeduration.md)
- [requiresFrameReordering](avfoundation/avpartialasyncproperty/requiresframereordering.md)