---
title: "setOpacity(_:at:)"
framework: avfoundation
role: symbol
role_heading: Instance Method
path: "avfoundation/avvideocompositionlayerinstruction/configuration/setopacity(_:at:)"
---

# setOpacity(_:at:)

Sets the opacity value at a specific time within the time range of the instruction.

## Declaration

```swift
mutating func setOpacity(_ opacity: Float, at time: CMTime)
```

## See Also

### Configuring the opacity

- [addOpacityRamp(_:)](avfoundation/avvideocompositionlayerinstruction/configuration/addopacityramp(_:).md)
- [opacityRamp(at:)](avfoundation/avvideocompositionlayerinstruction/configuration/opacityramp(at:).md)