---
title: "init(frameWidth:frameHeight:numberOfInterpolatedFrames:)"
framework: videotoolbox
role: symbol
role_heading: Initializer
path: "videotoolbox/vtlowlatencyframeinterpolationconfiguration/init(framewidth:frameheight:numberofinterpolatedframes:)"
---

# init(frameWidth:frameHeight:numberOfInterpolatedFrames:)

Creates a new low-latency frame interpolation configuration for frame-rate conversion.

## Declaration

```swift
init?(frameWidth: Int, frameHeight: Int, numberOfInterpolatedFrames: Int)
```

## Parameters

- `frameWidth`: Width of source frame in pixels.
- `frameHeight`: Height of source frame in pixels.
- `numberOfInterpolatedFrames`: The number of uniformly spaced frames that you want to be used for interpolation.

## Discussion

Discussion The available interpolation points are the equal to the value of (2^x - 1), where x is equal to numberOfInterpolatedFrames. For example, If you request 1 interpolated frame, 1 interpolation point at 0.5 is available. If you request 2 interpolated frames, 3 interpolation points at 0.25, 0.5 and 0.75 are available. You don’t need to use all available interpolation points. Setting a higher numberOfInterpolatedFrames increases the resolution of interpolation in some cases, but also increases latency.

## See Also

### Creating a frame interpolation configuration

- [init(frameWidth:frameHeight:spatialScaleFactor:)](videotoolbox/vtlowlatencyframeinterpolationconfiguration/init(framewidth:frameheight:spatialscalefactor:).md)