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

# append(_:)

Appends a timed metadata group to the adaptor.

## Declaration

```swift
func append(_ timedMetadataGroup: AVTimedMetadataGroup) -> Bool
```

## Parameters

- `timedMetadataGroup`: The timed metadata group to append.

## Return Value

Return Value true if the adaptor appends the group; otherwise, false.

## Discussion

Discussion The timing of metadata items in the output asset correspond to the time range of the timed metadata group, regardless of the values of their individual time and duration properties. important: Only call this method after you’ve attached the related input to the asset writer and called its startWriting() method.