Video subtitles

Turn them on

Open a video on YouTube, Netflix or X. Duet Translate adds a translate button to the player’s controls; click it, or press Alt + C, to show translated subtitles. Do the same again to turn them off.

The video needs subtitles of its own, made by its creator or generated by the site. Duet Translate translates those; if the video has none, there’s nothing to translate.

To translate every video as soon as it loads, turn on Video Subtitles → Translate on open in the settings.

How they look

By default the original line sits above its translation. In Video Subtitles → Subtitle style you can:

• show both lines, the original only, or the translation only,
• put the translation above or below the original,
• set the font, size, colour, weight and background of each line,
• drag the subtitles anywhere on the player.

For more control, such as blurring the translation while you train your listening, see subtitle style.

Look up a word

Click a word in the subtitles to look it up. The answer comes from the Dictionary AI action unless you choose another one under Word lookup action. See custom AI actions.

Better sentences with AI

Subtitles generated by a site often break in the middle of a sentence. With an AI provider, AI smart segmentation re-cuts them into whole sentences before translating, which reads much better. It takes a moment longer and needs a capable model; small models may drop or misplace lines. Results are cached, so a video you’ve watched before isn’t processed again.

Learning panel and downloads

From Duet Translate’s menu in the player you can open the learning panel, with an AI summary of the video and the full subtitles you can scroll and click to jump to a line, and download the original or the translated subtitles as a file.

Provider, prompts and speed

Subtitles can use a different provider from pages; choose it under API Providers → Feature providers. They also have their own prompts (see prompt variables) and their own request settings under Subtitle queue.