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  "title" : "Closed Caption Format Type Constants"
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# Closed Caption Format Type Constants

Types that identify closed caption formats.

## Topics

### Constants

[`var kCMClosedCaptionFormatType_ATSC: CMClosedCaptionFormatType`](/documentation/CoreMedia/kCMClosedCaptionFormatType_ATSC)

A type that describes ATSC-compliant samples.

[`var kCMClosedCaptionFormatType_CEA608: CMClosedCaptionFormatType`](/documentation/CoreMedia/kCMClosedCaptionFormatType_CEA608)

A type that describes CEA 608-compliant samples.

[`var kCMClosedCaptionFormatType_CEA708: CMClosedCaptionFormatType`](/documentation/CoreMedia/kCMClosedCaptionFormatType_CEA708)

A type that describes CEA 708-compliant samples.


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