CMFormatDescription.Extensions.Key

verbatimSampleDescription

get verbatimSampleDescription(): CMFormatDescription_Extensions_Key

static let verbatimSampleDescription: CMFormatDescription.Extensions.Key

Preserves the original SampleDescription data.

sampleDescriptionExtensionAtoms

get sampleDescriptionExtensionAtoms(): CMFormatDescription_Extensions_Key

static let sampleDescriptionExtensionAtoms: CMFormatDescription.Extensions.Key

Sample description extension atoms that were not translated into other entries in the extensions dictionary.

metadataKeyTable

get metadataKeyTable(): CMFormatDescription_Extensions_Key

static let metadataKeyTable: CMFormatDescription.Extensions.Key

fieldCount

get fieldCount(): CMFormatDescription_Extensions_Key

static let fieldCount: CMFormatDescription.Extensions.Key

Number, 1 or 2

formatName

get formatName(): CMFormatDescription_Extensions_Key

static let formatName: CMFormatDescription.Extensions.Key

String

gammaLevel

get gammaLevel(): CMFormatDescription_Extensions_Key

static let gammaLevel: CMFormatDescription.Extensions.Key

Number describing the gamma level, used in absence of (or ignorance of) `transferFunction`

iccProfile

get iccProfile(): CMFormatDescription_Extensions_Key

static let iccProfile: CMFormatDescription.Extensions.Key

Data

bytesPerRow

get bytesPerRow(): CMFormatDescription_Extensions_Key

static let bytesPerRow: CMFormatDescription.Extensions.Key

Number describing the bytes per row of raster pixel data (not used for compressed, planar, tiled or downsampled formats)

fieldDetail

get fieldDetail(): CMFormatDescription_Extensions_Key

static let fieldDetail: CMFormatDescription.Extensions.Key

One of `FieldDetail` values

yCbCrMatrix

get yCbCrMatrix(): CMFormatDescription_Extensions_Key

static let yCbCrMatrix: CMFormatDescription.Extensions.Key

Describes the color matrix for YCbCr->RGB. One of `YCbCrMatrix` values

defaultStyle

get defaultStyle(): CMFormatDescription_Extensions_Key

static let defaultStyle: CMFormatDescription.Extensions.Key

Use `qtTextDefaultStyle(startChar:height:ascent:localFontID:fontFace:fontSize:foregroundColor:defaultFontName:)` or `mobile3GPPTextDefaultStyle(startChar:endChar:localFontID:fontFace:fontSize:foregroundColor:)

displayFlags

get displayFlags(): CMFormatDescription_Extensions_Key

static let displayFlags: CMFormatDescription.Extensions.Key

Use `textDisplayFlags(_:)`

cleanAperture

get cleanAperture(): CMFormatDescription_Extensions_Key

static let cleanAperture: CMFormatDescription.Extensions.Key

Use `.cleanAperture(width:height:horizontalOffet:verticalOffset:)`

revisionLevel

get revisionLevel(): CMFormatDescription_Extensions_Key

static let revisionLevel: CMFormatDescription.Extensions.Key

Number

colorPrimaries

get colorPrimaries(): CMFormatDescription_Extensions_Key

static let colorPrimaries: CMFormatDescription.Extensions.Key

Describes the color primaries. One of `ColorPrimaries` values

defaultTextBox

get defaultTextBox(): CMFormatDescription_Extensions_Key

static let defaultTextBox: CMFormatDescription.Extensions.Key

Use `textRect(top:left:bottom:right:)`

fullRangeVideo

get fullRangeVideo(): CMFormatDescription_Extensions_Key

static let fullRangeVideo: CMFormatDescription.Extensions.Key

Boolean; by default, `false` for YCbCr-based compressed formats, indicating that pixel values are video-range rather than full-range

projectionKind

get projectionKind(): CMFormatDescription_Extensions_Key

@backDeployed(before: macOS 26.0, iOS 26.0, visionOS 26.0)
static var projectionKind: CMFormatDescription.Extensions.Key { get }

Indicates the projection that should be applied to presented decoded video frames.

spatialQuality

get spatialQuality(): CMFormatDescription_Extensions_Key

static let spatialQuality: CMFormatDescription.Extensions.Key

Number

backgroundColor

get backgroundColor(): CMFormatDescription_Extensions_Key

static let backgroundColor: CMFormatDescription.Extensions.Key

Use `qtTextColor(red:green:blue:alpha:)` or `mobile3GPPTextColor(red:green:blue:alpha:)

defaultFontName

get defaultFontName(): CMFormatDescription_Extensions_Key

static let defaultFontName: CMFormatDescription.Extensions.Key

String

temporalQuality

get temporalQuality(): CMFormatDescription_Extensions_Key

static let temporalQuality: CMFormatDescription.Extensions.Key

Number

viewPackingKind

get viewPackingKind(): CMFormatDescription_Extensions_Key

static let viewPackingKind: CMFormatDescription.Extensions.Key

Indicates the packing type of stereoscopic video frames.

alphaChannelMode

get alphaChannelMode(): CMFormatDescription_Extensions_Key

static let alphaChannelMode: CMFormatDescription.Extensions.Key

One of `AlphaChannelMode` values

bitsPerComponent

get bitsPerComponent(): CMFormatDescription_Extensions_Key

static let bitsPerComponent: CMFormatDescription.Extensions.Key

Number (such as 8, 10, 12, 16, etc).

pixelAspectRatio

get pixelAspectRatio(): CMFormatDescription_Extensions_Key

static let pixelAspectRatio: CMFormatDescription.Extensions.Key

Use `.pixelAspectRatio(horizontalSpacing:verticalSpacing:)`

transferFunction

get transferFunction(): CMFormatDescription_Extensions_Key

static let transferFunction: CMFormatDescription.Extensions.Key

Describes the transfer function. One of `TransferFunction` values

auxiliaryTypeInfo

get auxiliaryTypeInfo(): CMFormatDescription_Extensions_Key

static let auxiliaryTypeInfo: CMFormatDescription.Extensions.Key

String (Auxiliary type URN)

textJustification

get textJustification(): CMFormatDescription_Extensions_Key

static let textJustification: CMFormatDescription.Extensions.Key

Use `textJustification(_:)`. Specific to `.qt`

contentColorVolume

get contentColorVolume(): CMFormatDescription_Extensions_Key

@backDeployed(before: macOS 26.0, iOS 26.0, tvOS 26.0, watchOS 26.0, visionOS 26.0)
static var contentColorVolume: CMFormatDescription.Extensions.Key { get }

Matches payload of ITU-T-H.265:11/2019, D.2.40 Content Colour Volume SEI message. The value of this key is of ``Value/ContentColorVolume`` type.

hasAdditionalViews

get hasAdditionalViews(): CMFormatDescription_Extensions_Key

@backDeployed(before: macOS 26.0, iOS 26.0, visionOS 26.0)
static var hasAdditionalViews: CMFormatDescription.Extensions.Key { get }

A boolean indicating that one or more additional views may be present beyond stereo left and stereo right eyes (e.g,. a “centerline” view).

logTransferFunction

get logTransferFunction(): CMFormatDescription_Extensions_Key

@backDeployed(before: macOS 26.0, iOS 26.0, tvOS 26.0, watchOS 26.0, visionOS 26.0)
static var logTransferFunction: CMFormatDescription.Extensions.Key { get }

Indicates that the transfer function or gamma of the content is a log format and identifies the specific log curve.

sourceReferenceName

get sourceReferenceName(): CMFormatDescription_Extensions_Key

static let sourceReferenceName: CMFormatDescription.Extensions.Key

Use `sourceReferenceName(value:langCode:)`

containsAlphaChannel

get containsAlphaChannel(): CMFormatDescription_Extensions_Key

static let containsAlphaChannel: CMFormatDescription.Extensions.Key

Boolean; used to signal the presence of alpha channel in the bitstream

hasLeftStereoEyeView

get hasLeftStereoEyeView(): CMFormatDescription_Extensions_Key

@backDeployed(before: macOS 26.0, iOS 26.0, visionOS 26.0)
static var hasLeftStereoEyeView: CMFormatDescription.Extensions.Key { get }

A boolean indicating the stereo left eye is present in video frames.

stereoCameraBaseline

get stereoCameraBaseline(): CMFormatDescription_Extensions_Key

@backDeployed(before: macOS 26.0, iOS 26.0, visionOS 26.0)
static var stereoCameraBaseline: CMFormatDescription.Extensions.Key { get }

Indicates the distance between centers of the lenses of the camera system. The value is a CFNumber holding an unsigned 32-bit integer that is interpreted in micrometers or thousandths of a millimeter (e.g., 63123 is 63.123 millimeters). This property is optional and should only be specified if the distance is known.

contentLightLevelInfo

get contentLightLevelInfo(): CMFormatDescription_Extensions_Key

static let contentLightLevelInfo: CMFormatDescription.Extensions.Key

Data(4 bytes); big-endian structure; same as `kCVImageBufferContentLightLevelInfoKey`

hasRightStereoEyeView

get hasRightStereoEyeView(): CMFormatDescription_Extensions_Key

@backDeployed(before: macOS 26.0, iOS 26.0, visionOS 26.0)
static var hasRightStereoEyeView: CMFormatDescription.Extensions.Key { get }

A boolean indicating the stereo right eye is present in video frames.

horizontalFieldOfView

get horizontalFieldOfView(): CMFormatDescription_Extensions_Key

@backDeployed(before: macOS 26.0, iOS 26.0, tvOS 26.0, watchOS 26.0, visionOS 26.0)
static var horizontalFieldOfView: CMFormatDescription.Extensions.Key { get }

Horizontal field of view in thousandths of a degree (i.e., 123456 is 123.456 degrees).

verticalJustification

get verticalJustification(): CMFormatDescription_Extensions_Key

static let verticalJustification: CMFormatDescription.Extensions.Key

Use `textJustification(_:)`. Specific to `.mobile3GPP`

chromaLocationTopField

get chromaLocationTopField(): CMFormatDescription_Extensions_Key

static let chromaLocationTopField: CMFormatDescription.Extensions.Key

Chroma siting information. For progressive images, only the TopField value is used. One of `ChromaLocation` values

verbatimISOSampleEntry

get verbatimISOSampleEntry(): CMFormatDescription_Extensions_Key

static let verbatimISOSampleEntry: CMFormatDescription.Extensions.Key

Preserves the original ISOSampleEntry data.

horizontalJustification

get horizontalJustification(): CMFormatDescription_Extensions_Key

static let horizontalJustification: CMFormatDescription.Extensions.Key

Use `textJustification(_:)`. Specific to `.mobile3GPP`

ambientViewingEnvironment

get ambientViewingEnvironment(): CMFormatDescription_Extensions_Key

static let ambientViewingEnvironment: CMFormatDescription.Extensions.Key

Data(8 bytes); big-endian structure; same as kCVImageBufferAmbientViewingEnvironmentKey; matches payload of ISO/IEC 23008-2:2017, D.2.39 ambient viewing environment SEI message

chromaLocationBottomField

get chromaLocationBottomField(): CMFormatDescription_Extensions_Key

static let chromaLocationBottomField: CMFormatDescription.Extensions.Key

Chroma siting information. For progressive images, only the TopField value is used. One of `ChromaLocation` values

conformsToMPEG2VideoProfile

get conformsToMPEG2VideoProfile(): CMFormatDescription_Extensions_Key

static let conformsToMPEG2VideoProfile: CMFormatDescription.Extensions.Key

One of `MPEG2VideoProfile` values

masteringDisplayColorVolume

get masteringDisplayColorVolume(): CMFormatDescription_Extensions_Key

static let masteringDisplayColorVolume: CMFormatDescription.Extensions.Key

Data (24 bytes); big-endian structure; same as `kCVImageBufferMasteringDisplayColorVolumeKey`; matches payload of ISO/IEC 23008-2:2015(E), D.2.28 Mastering display colour volume SEI message

originalCompressionSettings

get originalCompressionSettings(): CMFormatDescription_Extensions_Key

static let originalCompressionSettings: CMFormatDescription.Extensions.Key

This extension contains a media-type-specific dictionary of settings used to produce a compressed media buffer.

horizontalDisparityAdjustment

get horizontalDisparityAdjustment(): CMFormatDescription_Extensions_Key

@backDeployed(before: macOS 26.0, iOS 26.0, visionOS 26.0)
static var horizontalDisparityAdjustment: CMFormatDescription.Extensions.Key { get }

Indicates a relative shift of the left and right images, which changes the zero parallax plane. The value encoded in normalized image space is a signed 32-bit integer measured over the range of -10000 to 10000 mapping to the uniform range [-1.0...1.0]. The interval of 0.0 to 1.0 or 0 to 10000 maps onto the stereo eye view image width. The negative interval 0.0 to -1.0 or 0 to -10000 similarly maps onto the stereo eye view image width. The default value of 0 is interpreted if this property is not set. If the property is not set, NULL may be set and retrieved. The NULL value should be interpreted as meaning 0. This property is optional and should only be specified if a disparity adjustment including 0 is known.

protectedContentOriginalFormat

get protectedContentOriginalFormat(): CMFormatDescription_Extensions_Key

@backDeployed(before: macOS 26.0, iOS 26.0, tvOS 26.0, watchOS 26.0, visionOS 26.0)
static var protectedContentOriginalFormat: CMFormatDescription.Extensions.Key { get }

FourCharCode number representing the original format

alternativeTransferCharacteristics

get alternativeTransferCharacteristics(): CMFormatDescription_Extensions_Key

static let alternativeTransferCharacteristics: CMFormatDescription.Extensions.Key

String (usually `TransferFunction.itu_R_2100_HLG` when used); corresponds to D.2.38 Alternative Transfer Characteristics SEI message

convertedFromExternalSphericalTags

get convertedFromExternalSphericalTags(): CMFormatDescription_Extensions_Key

static let convertedFromExternalSphericalTags: CMFormatDescription.Extensions.Key

Indicates that the image description contains projected media data converted from an external format. This format description extension is included if boxes containing external stereoscopic or spherical projection information were parsed.

cameraCalibrationDataLensCollection

get cameraCalibrationDataLensCollection(): CMFormatDescription_Extensions_Key

static let cameraCalibrationDataLensCollection: CMFormatDescription.Extensions.Key

Specifies intrinsic and extrinsic parameters for single or multiple lenses. The value for this key is represented by ``Value/CameraCalibrationDataLensCollection`` type.

depth

get depth(): CMFormatDescription_Extensions_Key

static let depth: CMFormatDescription.Extensions.Key

Number with depth value as directed by http://developer.apple.com/qa/qa2001/qa1183.html

vendor

get vendor(): CMFormatDescription_Extensions_Key

static let vendor: CMFormatDescription.Extensions.Key

String of fourCC

heroEye

get heroEye(): CMFormatDescription_Extensions_Key

@backDeployed(before: macOS 26.0, iOS 26.0, visionOS 26.0)
static var heroEye: CMFormatDescription.Extensions.Key { get }

Indicates which of the two eyes should be used as the primary when rendering in 2D. It is usually perpendicular to the target image surface.

version

get version(): CMFormatDescription_Extensions_Key

static let version: CMFormatDescription.Extensions.Key

Number

init

init(rawValue: _CoreFoundation_CFString): CMFormatDescription_Extensions_Key

init(rawValue: CFString)

Creates a new `Key` backed by `rawValue`

rawValue

getRawValue($self: CMFormatDescription_Extensions_Key): _CoreFoundation_CFString

var rawValue: CFString

The corresponding value of the raw type. A new instance initialized with `rawValue` will be equivalent to this instance. For example: enum PaperSize: String { case A4, A5, Letter, Legal } let selectedSize = PaperSize.Letter print(selectedSize.rawValue) // Prints "Letter" print(selectedSize == PaperSize(rawValue: selectedSize.rawValue)!) // Prints "true"

rawValue

setRawValue($self: CMFormatDescription_Extensions_Key, value: _CoreFoundation_CFString): void

var rawValue: CFString

The corresponding value of the raw type. A new instance initialized with `rawValue` will be equivalent to this instance. For example: enum PaperSize: String { case A4, A5, Letter, Legal } let selectedSize = PaperSize.Letter print(selectedSize.rawValue) // Prints "Letter" print(selectedSize == PaperSize(rawValue: selectedSize.rawValue)!) // Prints "true"

fontTable

get fontTable(): CMFormatDescription_Extensions_Key

static let fontTable: CMFormatDescription.Extensions.Key

Use `fontTable(_:)`. Specific to `.mobile3GPP`