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上次更新時間：2023-12-01 (世界標準時間)。
[null,null,["上次更新時間：2023-12-01 (世界標準時間)。"],[[["This documentation describes the `TracksChangedEvent` class within the Cast framework, specifically for web receiver applications."],["The `TracksChangedEvent` is triggered when the media tracks, such as audio or subtitles, have been modified or changed during playback."],["Developers can use this event to update the user interface or perform other actions based on track changes in their Cast application."]]],[]]