AVFoundation · IOS API REFERENCE

AVAssetWriterInput.CaptionReceiver

class · iOS 26.0+ · SDK 27.1

class CaptionReceiver

Provides an interface for writing caption data to an input.

Members (5)

method · iOS 26.0+

appendImmediately

TypeScript

appendImmediately(captionGroup: AVCaptionGroup): boolean

Swift declaration

func appendImmediately(_ captionGroup: AVCaptionGroup) throws -> Bool

Appends the caption group synchronously if the input is ready for more media data. - Parameter captionGroup: The caption group to be appended. - Returns: Returns true if the append was successful, false if the input was not ready for more media data. - Throws: An error if the underlying writer failed.

method · iOS 26.0+

appendImmediately

TypeScript

appendImmediately11268(caption: AVCaption): boolean

Swift declaration

func appendImmediately(_ caption: AVCaption) throws -> Bool

Appends the caption synchronously if the input is ready for more media data. - Parameter caption: The caption to be appended. - Returns: Returns true if the append was successful, false if the input was not ready for more media data. - Throws: An error if the underlying writer failed.

method · iOS 26.0+

append

TypeScript

append(captionGroup: AVCaptionGroup): Promise<void>

Swift declaration

nonisolated(nonsending) func append(_ captionGroup: AVCaptionGroup) async throws

Suspends until the input is ready for more media data, then appends the caption group. - Parameter captionGroup: The caption group to be appended. - Throws: An error if the underlying writer failed.

method · iOS 26.0+

append

TypeScript

append66766(caption: AVCaption): Promise<void>

Swift declaration

nonisolated(nonsending) func append(_ caption: AVCaption) async throws

Suspends until the input is ready for more media data, then appends the caption. - Parameter caption: The caption to be appended. - Throws: An error if the underlying writer failed.

method · iOS 26.0+

finish

TypeScript

finish(): void

Swift declaration

func finish()

Indicates to the AVAssetWriter that no more buffers will be appended to this receiver.

Skipped declarations

No declarations were skipped in this snapshot.

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