---
title: nominalFrameRate
framework: avfoundation
role: symbol
role_heading: Instance Property
path: avfoundation/avcompositiontrack/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.

## See Also

### Accessing frame-based characteristics

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