---
title: signLanguageInterpretationForAccessibility
framework: AVFoundation
role: symbol
role_heading: Type Property
platforms: [iOS 27.1+, iPadOS 27.1+, Mac Catalyst 27.1+, macOS 27.1+, tvOS 27.1+, visionOS 27.1+, watchOS 27.1+]
path: avfoundation/avmediacharacteristic/signlanguageinterpretationforaccessibility
---

# 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.

## Declaration

```swift
static let signLanguageInterpretationForAccessibility: AVMediaCharacteristic
```

## Discussion

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:].