---
title: VTFrameRateConversionParameters
framework: videotoolbox
role: symbol
role_heading: Class
path: videotoolbox/vtframerateconversionparameters
---

# VTFrameRateConversionParameters

An object that contains the required input and output parameters to run a frame rate conversion processor on a frame.

## Declaration

```swift
class VTFrameRateConversionParameters
```

## Overview

Overview This object is used in the processWithParameters call of a VTFrameProcessor class. The output parameter is a destinationFrame where the output frame is returned as a VTFrameProcessorMutableFrame back to the caller function once the processing completes. The parameters within VTFrameRateConversionParameters are frame level parameters.

## Topics

### Creating conversion parameters

- [init(sourceFrame:nextFrame:opticalFlow:interpolationPhase:submissionMode:destinationFrames:)](videotoolbox/vtframerateconversionparameters/init(sourceframe:nextframe:opticalflow:interpolationphase:submissionmode:destinationframes:).md)

### Inspecting the parameters

- [sourceFrame](videotoolbox/vtframerateconversionparameters/sourceframe.md)
- [nextFrame](videotoolbox/vtframerateconversionparameters/nextframe.md)
- [opticalFlow](videotoolbox/vtframerateconversionparameters/opticalflow.md)
- [interpolationPhase](videotoolbox/vtframerateconversionparameters/interpolationphase-2jky5.md)
- [submissionMode](videotoolbox/vtframerateconversionparameters/submissionmode-swift.property.md)
- [VTFrameRateConversionParameters.SubmissionMode](videotoolbox/vtframerateconversionparameters/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

### Frame rate conversion

- [VTFrameRateConversionConfiguration](videotoolbox/vtframerateconversionconfiguration.md)