---
title: "init(leadingFrames:trailingFrames:)"
framework: avfaudio
role: symbol
role_heading: Initializer
path: "avfaudio/avaudioconverterprimeinfo/init(leadingframes:trailingframes:)"
---

# init(leadingFrames:trailingFrames:)

Creates a priming information instance with the specified leading and trailing frames.

## Declaration

```swift
init(leadingFrames: AVAudioFrameCount, trailingFrames: AVAudioFrameCount)
```

## Parameters

- `leadingFrames`: Specifies the number of leading (previous) input frames relative to the start input frame.
- `trailingFrames`: Specifies the number of trailing input frames past the end input frame.

## See Also

### Creating Priming Information

- [init()](avfaudio/avaudioconverterprimeinfo/init().md)