pub unsafe static AVMediaCharacteristicEasyToRead: Option<&'static AVMediaCharacteristic>AVMediaFormat only.Expand description
A media characteristic that indicates that a track or media selection option provides legible content in the language of its specified locale that has been edited for ease of reading.
The value of this characteristic is “ public.easy-to-read“.
Closed caption tracks that carry “easy reader” captions (per the CEA-608 specification) should be tagged with this characteristic. Subtitle tracks can also be tagged with this characteristic, where appropriate.
Note for content authors: for QuickTime movie and .m4v files a track is considered to have the characteristic AVMediaCharacteristicEasyToRead only if it’s explicitly tagged with that characteristic. See the discussion of the tagging of tracks with media characteristics below.
Also see -[AVAssetTrack hasMediaCharacteristic:] and -[AVMediaSelectionOption hasMediaCharacteristic:].
See also Apple’s documentation