---
title: "init(timeRange:start:end:)"
framework: avfoundation
role: symbol
role_heading: Initializer
path: "avfoundation/avvideocompositionlayerinstruction/opacityramp/init(timerange:start:end:)"
---

# init(timeRange:start:end:)

## Declaration

```swift
init(timeRange: CMTimeRange, start: Float, end: Float)
```