The option provides legible content in the language of its specified locale and that the content so that it's easier to read.
- iOS 6.0+
- macOS 10.8+
- Mac Catalyst 13.0+
- tvOS 9.0+
- watchOS 2.0+
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.
The value of this characteristic is
For QuickTime movie and .m4v files a media option is considered to have the characteristic
AVMedia only if it’s explicitly tagged with that characteristic.