Check translated videos
How translated videos display to viewers
YouTube uses signals to automatically match a video's language (title, description, and captions) to viewer preferences. Signals can include a viewer's interface language, location, and recently watched videos. These signals help detect and display videos in the language that's the best match for the viewer, even if it's not the viewer's main language setting.
This means that if a viewer changes their YouTube interface language (on youtube.com or in the mobile apps), they may not immediately see all videos in that language — even if the video has translations available in that language.
For example, if a viewer has their YouTube interface set to English, but signals indicate that they also understand French, then they'll likely see the original versions French-language videos instead of English-translated versions.
Check how translated videos look
If you want to see what translations look like on a video, you can view the video using a different YouTube interface language.
- Open an incognito browser window using Chrome, Firefox, MS Edge, or Opera.
- Go to www.youtube.com and scroll to the bottom of the page.
- Use the Language drop-down menu to choose the language you want to check.
- Go to the video's watch page or search for it using video title or ID.
You can also modify the video's URL to display it in a specific language — just add "&vl=" (lowercase) and the ISO 639-1 language code to the end of the video's watch page URL.
For example, to see a Japanese version of a video, you would change the URL from "www.youtube.com/watch?v=b9cKgwnFIAw" to "www.youtube.com/watch?v=b9cKgwnFIAw&vl=ja". This shows the translated metadata, and you can then enable the corresponding subtitles using the gear icon in the player.