[null,null,["最后更新时间 (UTC)：2025-07-25。"],[[["\u003cp\u003e\u003ccode\u003eTracksInfo\u003c/code\u003e provides information about available media tracks, including active tracks, language, text track style, and overall track details.\u003c/p\u003e\n"],["\u003cp\u003eYou can specify active tracks using either \u003ccode\u003eactiveTrackIds\u003c/code\u003e or prioritize language selection using the \u003ccode\u003elanguage\u003c/code\u003e property.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eTracksInfo\u003c/code\u003e includes details about text track style through \u003ccode\u003etextTrackStyle\u003c/code\u003e and a comprehensive list of tracks via the \u003ccode\u003etracks\u003c/code\u003e property.\u003c/p\u003e\n"]]],["`TracksInfo` class provides information about media tracks. Key properties include: `activeTrackIds`, an array of active track IDs; `language`, the preferred language, which overrides `activeTrackIds`; `textTrackStyle`, detailing the text track's style; and `tracks`, an array containing specific track details. The class constructor, `TracksInfo()`, initializes this information. These properties define how media tracks are managed and displayed.\n"],null,["# Class: TracksInfo\n\ncast.[framework](/cast/docs/reference/web_receiver/cast.framework).[messages](/cast/docs/reference/web_receiver/cast.framework.messages).TracksInfo\n===================================================================================================================================================\n\nclass static\n\nTracks information.\n\nConstructor\n-----------\n\n### TracksInfo\n\nnew\nTracksInfo()\n\nProperties\n----------\n\n### activeTrackIds\n\n(non-null Array of number or undefined)\n\nThe track IDs that should be active.\n\n### language\n\n(string or undefined)\n\nLanguage for the tracks that should be active. The language field will\ntake precedence over `activeTrackIds` if both are specified.\n\n### textTrackStyle\n\n(non-null [cast.framework.messages.TextTrackStyle](/cast/docs/reference/web_receiver/cast.framework.messages.TextTrackStyle) or undefined)\n\nThe text track style.\n\n### tracks\n\n(non-null Array of non-null [cast.framework.messages.Track](/cast/docs/reference/web_receiver/cast.framework.messages.Track) or undefined)\n\nThe tracks information."]]
