YouTube adds preferred-language controls for audio and descriptions

This gives YouTube viewers a clearer way to choose language-specific playback without changing app language or location settings. The feature is relevant to multilingual catalog presentation because it covers audio dubs, titles, and descriptions, all from the same settings flow. For the streaming stack, it reinforces how metadata and audio-track handling are becoming part of the core viewing experience rather than separate extras. Watch for how consistently translated titles, descriptions, and audio tracks appear across videos that support multiple languages.