# textSelector A string that identifies the text the style attributes apply to. ``` var textSelector: String? { get } ``` ## Discussion The format of the legible media determines the syntax of this string. For WebVTT, it’s a CSS selector that matches the markup inside a cue. A class selector needs a leading period, and a voice selector wraps the speaker’s name in a `voice` attribute. - `.music`: The text of any tag carrying the `music` class, as in `` - `v[voice="Ana"]`: The text of a voice tag that names Ana, as in `` - `::cue`: The text of every cue The following example applies one rule for each of those selectors: ```swift import CoreMedia playerItem.textStyleRules = [ AVTextStyleRule( textMarkupAttributes: [kCMTextMarkupAttribute_ItalicStyle as String: true], textSelector: ".music" ), AVTextStyleRule( textMarkupAttributes: [kCMTextMarkupAttribute_ForegroundColorARGB as String: [1.0, 0.4, 0.8, 1.0]], textSelector: "v[voice=\"Ana\"]" ), AVTextStyleRule( textMarkupAttributes: [kCMTextMarkupAttribute_RelativeFontSize as String: 120], textSelector: "::cue" ), ].compactMap { $0 } ``` When this property is `nil`, the attributes act as defaults for all of the item’s text. Rules apply only where the media resource doesn’t supply equivalent styling of its own; see [`textStyleRules`](/documentation/AVFoundation/AVPlayerItem/textStyleRules). --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)