---
title: usePrecomputedFlow
framework: videotoolbox
role: symbol
role_heading: Instance Property
path: videotoolbox/vtmotionblurconfiguration/useprecomputedflow
---

# usePrecomputedFlow

A Boolean value to indicates whether the the optical flow will be provided by the user.

## Declaration

```swift
var usePrecomputedFlow: Bool { get }
```

## Discussion

Discussion If false this configuration computes the optical flow on the fly.

## See Also

### Inspecting the configuration

- [frameWidth](videotoolbox/vtmotionblurconfiguration/framewidth.md)
- [frameHeight](videotoolbox/vtmotionblurconfiguration/frameheight.md)
- [sourcePixelBufferAttributes](videotoolbox/vtmotionblurconfiguration/sourcepixelbufferattributes.md)
- [destinationPixelBufferAttributes](videotoolbox/vtmotionblurconfiguration/destinationpixelbufferattributes.md)
- [supportedPixelFormats](videotoolbox/vtmotionblurconfiguration/supportedpixelformats.md)
- [qualityPrioritization](videotoolbox/vtmotionblurconfiguration/qualityprioritization-swift.property.md)
- [VTMotionBlurConfiguration.QualityPrioritization](videotoolbox/vtmotionblurconfiguration/qualityprioritization-swift.enum.md)