Real-time subtitles for your live conference, summit, or event stream. Multi-language support, speaker-accurate captions, and professional-grade delivery — without the CART captioner price tag.
Start Free TrialLive conference streaming has become the default format for professional events. Whether it's a tech summit, medical conference, legal symposium, corporate all-hands, or academic colloquium, the audience watching remotely often equals or exceeds the in-room attendance. These remote viewers deserve the same accessible experience as those in the room.
Beyond accessibility, captions serve practical purposes for professional audiences. Viewers in open office environments, noisy hotel lobbies, or different time zones watching at reduced volume rely on captions to follow speaker content. Conference organizers who caption their streams consistently report higher remote viewer retention and longer average watch times.
Corporate events also face increasing legal pressure to provide accessible streams. The ADA, Section 508, and international equivalents like the EU Web Accessibility Directive impose caption requirements on organizations of certain types. Even organizations not legally required to caption should consider the reputational risk of an inaccessible professional stream.
CART (Communication Access Realtime Translation) is the professional standard for human live captioning. Trained stenographers can achieve 98-99% accuracy and handle technical vocabulary. The catch: CART captioners charge $75–$200 per hour, often require minimum booking windows, and need advance materials (speaker notes, agenda) to prepare. For a multi-day conference, CART costs can run $5,000–$20,000.
StreamTranslate provides AI captions powered by Deepgram Nova-2 — achieving 90-96% accuracy for clear spoken English — at $9.99 per month. For many conference use cases, especially keynotes and panel discussions with well-articulated speakers, this accuracy level is entirely sufficient. The cost saving is dramatic.
Best practice: use StreamTranslate for the majority of content and hire CART captioners only for sessions with highly technical specialized vocabulary, strong accents, or where legally mandated human captioning is required.
StreamTranslate handles panel discussions and multi-speaker events well. The system captions whoever is speaking at the microphone. For best results, ensure each speaker has a dedicated microphone and avoid crosstalk. Speaker identification labels can be added manually to your OBS overlay design.
Your A/V team likely already runs OBS for the stream. StreamTranslate adds a single Browser Source to your existing OBS scene — no workflow disruption.
Connect your conference audio board output (or podium mic) to the streaming computer. Clean, wired audio gives the best STT accuracy. Avoid ambient room audio.
Go to streamtranslate.live/setup, get your overlay URL, add it as a Browser Source in OBS. Position it at the bottom of your conference broadcast frame.
Run a test stream at least 30 minutes before the event starts. Check caption accuracy, position, and ensure audio levels are correctly routed. StreamTranslate is real-time — no buffering or file upload needed.
Many conferences now draw global audiences. StreamTranslate's 50+ language translation feature turns your English-language conference into a multilingual broadcast. Speakers present in English; viewers in Latin America, Europe, Asia, and the Middle East see captions in their native language, in real time.
This capability, which previously required teams of simultaneous interpreters wearing headsets in soundproof booths, is now available as a $9.99/month software subscription. The accuracy gap vs human interpreters is real for technical conferences, but for keynotes, panel discussions, and general sessions, AI translation serves the global audience effectively.
Production teams running professional conference streams should plan the StreamTranslate integration as part of the OBS scene design. The caption overlay sits in its own scene layer — fully transparent background with only the text visible. This means it can be added to or removed from scenes independently, toggled during B-roll or slide-only moments, and styled to match the conference's brand design.
StreamTranslate supports OBS Studio, Streamlabs OBS, vMix, and XSplit. If you're using hardware encoders or production switchers that don't support browser sources natively, you can run StreamTranslate on a second display and capture it with a video capture device.
When you stream with StreamTranslate captions, the captions are burned into the OBS recording as well. This means your conference recordings are captioned from the start — no post-production captioning step required for archival recordings or VOD distribution.
CART captioners achieve 98-99% accuracy at $75-200/hour. StreamTranslate achieves 90-96% accuracy at $9.99/month. For most conference sessions with clear audio, StreamTranslate is sufficient. Use CART only for highly specialized technical sessions or legally mandated scenarios.
Yes. StreamTranslate captions whoever is speaking at the microphone. For best results in multi-speaker panels, ensure each speaker has a dedicated mic and route the conference audio board output (not room ambience) into OBS.
StreamTranslate is an OBS overlay that works with any platform you stream to. If your virtual conference uses OBS virtual camera feeding into Zoom or Teams, the captions appear in your video output.
StreamTranslate translates into 50+ languages in real time, including Spanish, Portuguese, French, German, Japanese, Chinese, Korean, Arabic, Hindi, Italian, Dutch, and more.
Go to streamtranslate.live/setup, add the browser source to your OBS scene, and run a test stream at least 30 minutes before the event. Verify caption accuracy with your speaker's mic setup.
When you stream with StreamTranslate active, captions are burned into your OBS recording in real time. No post-production captioning is required. For conferences without live captions, StreamTranslate is a live-only solution.