---
title: "init(mChunkType:mChunkSize:)"
framework: audiotoolbox
role: symbol
role_heading: Initializer
path: "audiotoolbox/cafchunkheader/init(mchunktype:mchunksize:)"
---

# init(mChunkType:mChunkSize:)

## Declaration

```swift
init(mChunkType: UInt32, mChunkSize: Int64)
```