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 language, location, and recently watched videos. These signals show videos in the language that's the best match for the viewer. This language may be different than the viewer's main language setting.
If a viewer changes their language setting on YouTube, 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 language set to English, but signals indicate that they also understand French, then they'll likely see the original French version.
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 language.
- Open an incognito browser window using Chrome, Firefox, MS Edge, or Opera.
- Go to your video's watch page on YouTube.
- Click your profile picture Language Select the desired language.
You can also modify the video's URL to display it in a specific language. 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". The translated metadata will show, and you can then turn on the corresponding subtitles using Settings .