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# signLanguageInterpretationForAccessibility

A media characteristic that indicates that a track or media selection option provides a sign language interpretation of the spoken dialog and other significant aspects of the presentation.

```
static let signLanguageInterpretationForAccessibility: AVMediaCharacteristic
```

## Discussion

See -[AVAssetTrack hasMediaCharacteristic:] and -[AVMediaSelectionOption hasMediaCharacteristic:].
The value of this characteristic is @“public.accessibility.sign-language-interpretation”.
Note for content authors: for QuickTime movie and .m4v files a media option is considered to have the characteristic AVMediaCharacteristicSignLanguageInterpretationForAccessibility 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:].

---

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