CMClosedCaptionFormatType A closed caption format type. Declarationtypealias CMClosedCaptionFormatType = FourCharCode TopicsConstantskCMClosedCaptionFormatType_CEA608kCMClosedCaptionFormatType_CEA708 See AlsoFormat TypesCMMetadataFormatTypeMetadata Format TypesCMSubtitleFormatTypeSubtitle Format TypesCMTimeCodeFormatTypeTime Code FormatsCMTextFormatTypeCMPixelFormatTypeTagged Buffer Group Format Types