How-to guide

How to Add Captions for Deaf Viewers on Twitch

Accessibility for hearing-impaired audience. StreamTranslate adds live translated subtitles to your stream via a single OBS browser source — 65 languages, under 500ms latency, zero GPU overhead.

Launch StreamTranslate Free → View Pricing

card required for the Free Plan; no payment unless you upgrade. Free Plan with 3 hours every month. Works on any browser.

TL;DR
Accessibility for hearing-impaired audience. StreamTranslate makes this easy — paste one URL into OBS, go live, viewers see translated captions in real-time. Free Plan with 3 hours every month, card required for the Free Plan; no payment unless you upgrade.

Why this matters

Accessibility for hearing-impaired audience. Streamers who reach international audiences grow their viewership 3-5x faster than English-only channels (Twitch data, 2025-2026).

StreamTranslate adds live translated captions to your stream in 65 languages via a single OBS browser source. Setup takes 60 seconds. No plugin install. No GPU overhead. No API keys.

How it works

  1. Sign up free — Free Plan with 3 hours every month, card required for the Free Plan; no payment unless you upgrade
  2. Pick your spoken language and target language(s)
  3. Copy the OBS browser source URL
  4. Paste into OBS as a Browser Source (1920x1080)
  5. Go live — captions appear in real-time

Languages supported

65 target languages including Spanish, Portuguese, French, German, Italian, Polish, Russian, Japanese, Korean, Mandarin Chinese, Arabic, Hindi, Thai, Vietnamese, Indonesian, Turkish, Dutch, Swedish, Norwegian, Danish, Finnish, Greek, Czech, Hungarian, Romanian, Ukrainian.

Pricing

Free Plan with 3 hours every month. Then Stream Pass at $9.99 one-time (12 hours), Starter at $14.99/mo (25 hrs), Pro at $34.99/mo (50 hrs + dual-language), Unlimited at $149/mo (no caps).

Frequently asked questions

How fast is the translation?
Under 500ms end-to-end from speech to on-screen caption.
Does this work with OBS / Streamlabs / Meld Studio?
Yes. Any streaming software that supports Browser Sources works the same way.
Do I need to install anything?
No. Just paste one URL into OBS as a Browser Source. No plugin, no app, no API keys.
What languages are supported?
65 including Spanish, Portuguese, French, German, Japanese, Korean, Mandarin, Arabic, Hindi, Russian, Italian, Polish, Dutch, and more.
How much does it cost?
Free Plan with 3 hours every month. Then plans from $9.99 one-time (Stream Pass) or $14.99/month (Starter).

Free Plan with 3 hours every month

card required for the Free Plan; no payment unless you upgrade. Paste one URL into OBS. Live in 60 seconds.

Launch StreamTranslate →
vs Caption.Ninja vs LocalVocal vs Maestra All Alternatives

Also stream IRL

Also supports IRL with Moblin and the OBS audio plugin, including home and cloud OBS setups such as IRL Toolkit.

Use an OBS receiver for IRL Pro, Larix Broadcaster, PRISM Live Mobile or TVU Go. Cloud providers may need to install the plugin on your server.

Moblin · Moblin Browser Source · Cloud OBS · IRL Toolkit · OBS Studio · IRL Pro · Larix Broadcaster · PRISM Live Mobile · TVU Go · MediaMTX

IRL setup guide · Desktop setup guide