outputCaptionProvider(for:validationDelegate:)
Attaches the output to the reader and returns an output provider for reading caption groups.
Declaration
func outputCaptionProvider(for output: AVAssetReaderTrackOutput, validationDelegate: (any AVAssetReaderCaptionValidationHandling)? = nil) -> sending AVAssetReaderOutput.Provider<AVCaptionGroup>Parameters
- output:
The output to be attached to the reader.
Return Value
A reader output provider with an interface for reading caption groups.