---
title: VTOpticalFlowParameters
framework: videotoolbox
role: symbol
role_heading: Class
path: videotoolbox/vtopticalflowparameters
---

# VTOpticalFlowParameters

An object that describes frame-level optical flow parameters.

## Declaration

```swift
class VTOpticalFlowParameters
```

## Topics

### Creating a parameters object

- [init(sourceFrame:nextFrame:submissionMode:destinationOpticalFlow:)](videotoolbox/vtopticalflowparameters/init(sourceframe:nextframe:submissionmode:destinationopticalflow:).md)

### Inspecting the parameters

- [sourceFrame](videotoolbox/vtopticalflowparameters/sourceframe.md)
- [nextFrame](videotoolbox/vtopticalflowparameters/nextframe.md)
- [destinationOpticalFlow](videotoolbox/vtopticalflowparameters/destinationopticalflow.md)
- [submissionMode](videotoolbox/vtopticalflowparameters/submissionmode-swift.property.md)
- [VTOpticalFlowParameters.SubmissionMode](videotoolbox/vtopticalflowparameters/submissionmode-swift.enum.md)

## Relationships

### Inherits From

- [NSObject](objectivec/nsobject-swift.class.md)

### Conforms To

- [CVarArg](swift/cvararg.md)
- [CustomDebugStringConvertible](swift/customdebugstringconvertible.md)
- [CustomStringConvertible](swift/customstringconvertible.md)
- [Equatable](swift/equatable.md)
- [Hashable](swift/hashable.md)
- [NSObjectProtocol](objectivec/nsobjectprotocol.md)
- [VTFrameProcessorParameters](videotoolbox/vtframeprocessorparameters.md)

## See Also

### Optical flow

- [VTFrameProcessorOpticalFlow](videotoolbox/vtframeprocessoropticalflow.md)
- [VTOpticalFlowConfiguration](videotoolbox/vtopticalflowconfiguration.md)