---
title: "append(_:)"
framework: avfoundation
role: symbol
role_heading: Instance Method
path: "avfoundation/avcapturemetadatainput/append(_:)"
---

# append(_:)

Provides metadata to the capture session.

## Declaration

```swift
func append(_ metadata: AVTimedMetadataGroup) throws
```

## Parameters

- `metadata`: A timed group of metadata. To denote a period of no metadata, pass an empty doc://com.apple.avfoundation/documentation/AVFoundation/AVTimedMetadataGroup.