---
title: "captionsNotPresentInPreviousGroups(in:)"
framework: avfoundation
role: symbol
role_heading: Instance Method
path: "avfoundation/avassetreaderoutputcaptionadaptor/captionsnotpresentinpreviousgroups(in:)"
---

# captionsNotPresentInPreviousGroups(in:)

Returns the set of captions in the caption group that weren’t vended by the adaptor.

## Declaration

```swift
func captionsNotPresentInPreviousGroups(in captionGroup: AVCaptionGroup) -> [AVCaption]
```

## Parameters

- `captionGroup`: The caption group to query.

## Return Value

Return Value An array of captions not previously vended by the adaptor, or an empty array if there are none.

## See Also

### Reading caption groups

- [nextCaptionGroup()](avfoundation/avassetreaderoutputcaptionadaptor/nextcaptiongroup().md)