AVAssetWriterInput.MetadataReceiver Provides an interface for writing timed metadata groups to an input. Declarationclass MetadataReceiver TopicsAppending metadataappend(_:)appendImmediately(_:)finish() See AlsoAppending media samplesexpectsMediaDataInRealTimeisReadyForMoreMediaDatarequestMediaDataWhenReady(on:using:)append(_:)markAsFinished()AVAssetWriterInput.SampleBufferReceiverAVAssetWriterInput.PixelBufferReceiverAVAssetWriterInput.TaggedPixelBufferGroupReceiverAVAssetWriterInput.CaptionReceiver