---
title: videoFrameRateRangeForReactionEffectsInProgress
framework: avfoundation
role: symbol
role_heading: Instance Property
path: avfoundation/avcapturedevice/format/videoframeraterangeforreactioneffectsinprogress
---

# videoFrameRateRangeForReactionEffectsInProgress

Indicates the minimum and maximum frame rates available when a reaction effect runs.

## Declaration

```swift
var videoFrameRateRangeForReactionEffectsInProgress: AVFrameRateRange? { get }
```

## Discussion

Discussion Unlike other video effects, enabling reaction effects doesn’t limit the stream’s frame rate because most of the time the system isn’t rendering the effect. The frame rate only ramps down when the system renders a reaction on the stream.

## See Also

### Determining reaction effects support

- [reactionEffectsSupported](avfoundation/avcapturedevice/format/reactioneffectssupported.md)