captionsNotPresentInPreviousGroups(in:)
Returns the set of captions in the caption group that weren’t vended by the adaptor.
Declaration
func captionsNotPresentInPreviousGroups(in captionGroup: AVCaptionGroup) -> [AVCaption]Parameters
- captionGroup:
The caption group to query.
Return Value
An array of captions not previously vended by the adaptor, or an empty array if there are none.