Global Variable

AVMediaCharacteristicContainsOnlyForcedSubtitles

The options present only forced subtitles.

Declaration

const AVMediaCharacteristic AVMediaCharacteristicContainsOnlyForcedSubtitles;

Discussion

Media options with forced-only subtitles are typically selected when 1) the user has not selected a legible option with an accessibility characteristic or an auxiliary purpose and 2) its locale matches the locale of the selected audible media selection option.

The value of this characteristic is "public.subtitles.forced-only".

The presence of this characteristic for a legible media option is inferred from the format description of the associated track that presents the subtitle media.

See Also

Media Characteristics

AVMediaCharacteristicAudible

The media is audible.

AVMediaCharacteristicDescribesMusicAndSoundForAccessibility

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

AVMediaCharacteristicDescribesVideoForAccessibility

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

AVMediaCharacteristicDubbedTranslation

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

AVMediaCharacteristicEasyToRead

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

AVMediaCharacteristicFrameBased

The media is frame-based.

AVMediaCharacteristicIsAuxiliaryContent

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

AVMediaCharacteristicIsMainProgramContent

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

AVMediaCharacteristicLanguageTranslation

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

AVMediaCharacteristicLegible

The media is legible.

AVMediaCharacteristicTranscribesSpokenDialogForAccessibility

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

AVMediaCharacteristicUsesWideGamutColorSpace

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

AVMediaCharacteristicVisual

The media is visual.

AVMediaCharacteristicVoiceOverTranslation

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