Type Property

isAuxiliaryContent

The option includes content marked by the content author as secondary to the presentation of the asset.

Declaration

static let isAuxiliaryContent: AVMediaCharacteristic

Discussion

Example: an option that presents audio media containing commentary on the presentation would typically have this characteristic.

The value of this characteristic is "public.auxiliary-content".

For QuickTime movie and .m4v files, a media option is considered to have the characteristic isAuxiliaryContent if it’s explicitly tagged with that characteristic or if, as a member of an alternate track group, its associated track is excluded from autoselection.

See Also

Media Characteristics

static let containsOnlyForcedSubtitles: AVMediaCharacteristic

The options present only forced subtitles.

static let describesMusicAndSoundForAccessibility: AVMediaCharacteristic

The option includes legible content in the language of its specified locale that describes music and sound effects occurring in program audio.

static let describesVideoForAccessibility: AVMediaCharacteristic

The option includes audible content that describes the visual portion of the presentation.

static let dubbedTranslation: AVMediaCharacteristic

The track or media selection option contains a language or dialect translation of originally or previously produced content.

static let easyToRead: AVMediaCharacteristic

The option provides legible content in the language of its specified locale and that the content so that it's easier to read.

static let isMainProgramContent: AVMediaCharacteristic

The option includes content marked by the content author as intrinsic to the presentation of the asset.

static let languageTranslation: AVMediaCharacteristic

The option contains a language or dialect translation of origianlly or previously produced content.

static let transcribesSpokenDialogForAccessibility: AVMediaCharacteristic

The option includes legible content in the language of its specified locale that transcribes spoken dialog.

static let usesWideGamutColorSpace: AVMediaCharacteristic

The track uses a wide gamut color space and can make use of colors that can't be accurately represented otherwise.

static let voiceOverTranslation: AVMediaCharacteristic

The option contains a language translation created by adding a verbal interporetation of dialog and translations.