---
title: "init(assetWriterInput:)"
framework: avfoundation
role: symbol
role_heading: Initializer
path: "avfoundation/avassetwriterinputmetadataadaptor/init(assetwriterinput:)"
---

# init(assetWriterInput:)

Creates a metadata group adaptor to append timed metadata groups to write to an output file.

## Declaration

```swift
init(assetWriterInput input: AVAssetWriterInput)
```

## Parameters

- `input`: The metadata input to which to append groups of timed metadata.