Reach Spanish speakers in Latin America AND Japanese viewers in Tokyo at the same time. StreamTranslate makes multilingual caption overlays possible in OBS in under 5 minutes.
Try StreamTranslate FreeStreamTranslate's multi-language caption system is built on a simple principle: each browser source instance captures your audio independently and outputs captions in its configured language. By adding multiple browser source instances to OBS — each pointed at your StreamTranslate URL with a different language setting — you create a stack of language overlays that appear simultaneously on your stream.
Setup takes under 5 minutes. In the StreamTranslate dashboard, configure language A (e.g., Spanish) and copy the browser source URL. In OBS, add a browser source, paste the URL, and position it at the bottom of the screen. Return to the StreamTranslate dashboard, switch to language B (e.g., Japanese), copy the new URL. Add a second browser source in OBS, paste the new URL, and position it at the top. Both overlays will run simultaneously, each capturing your audio and displaying captions in their respective languages.
Not all language combinations make equal sense for all streamers. The right multilingual caption strategy depends on where your viewers are. If your stream analytics show significant Spanish-speaking and Portuguese-speaking viewership alongside your primary English audience, adding Spanish and Portuguese overlays is high-impact. If you're a fighting game streamer with a Japanese viewership base, English + Japanese is the natural combination.
From a screen real estate perspective, two language overlays work best when positioned in clearly distinct locations. Bottom-center English captions with top-center Spanish captions is a common configuration. For streams with very different writing systems (Latin + CJK), the visual distinction between scripts helps viewers quickly identify their language without reading the text.
Configure each browser source for any of 125+ supported output languages — Spanish, Japanese, Korean, French, Arabic, and more.
Stack multiple browser source instances in OBS to display 2 or 3 language overlays simultaneously on the same stream.
Each language overlay can be positioned independently — top, bottom, left, right — for clear visual separation of multiple languages.
Yes. Add multiple StreamTranslate browser source instances in OBS, each configured for a different target language, and position them in different screen areas.
StreamTranslate supports 125+ output languages. Each browser source instance handles one language, and you can layer multiple instances in OBS for simultaneous multilingual captions.
Each browser source adds minimal CPU overhead. Two or three simultaneous language overlays are manageable on most streaming PCs without significant performance impact.
English + Spanish, English + Japanese, and English + Portuguese are the most common multilingual caption combinations for English-language streamers with international audiences.
With open caption overlays, all active languages are visible to all viewers. For viewer-selectable captions, closed caption solutions requiring platform API integration would be needed.