Break Language Barriers
in Every Sermon
Let every member hear the message in their own language. AI-powered real-time translation, built for churches worldwide.
From voice to translation in seconds
Four stages of AI work together in real time, engineered for sermon-grade reliability.
Live capture
The preacher's voice streams from the mic to the server with no perceptible delay.
16 kHz PCMSpeech recognition
Voice AI transcribes the sermon, with automatic backup to a fallback engine for safety.
Voice AIAI translation
Translation AI understands the full sermon context and naturally weaves in theological vocabulary.
Translation AIVoice + overlay
Accurate translated audio streams to listeners' phones — captions also appear on their phones in real time.
49 languagesBuilt for Sunday reality
Not a demo — battle-tested in real worship services.
Realtime mode — captions as you preach
Translation captions appear while the message is being preached, and the AI follows the flow of the whole sermon so each line reads naturally.
Sermon-grade accuracy
Custom glossary for theological terms, names, and church vocabulary. Speaker context carries across sentences for pronoun-perfect translation.
Transparent overlay
Floats above any video source. Fully customizable fonts, colors, position, and fade.
Cloud listen
Members scan a QR code to hear the translation through their own headphones — any language, any device.
OBS + ProPresenter
Native integrations push translations directly into your worship stream and projection stack.
Secure by design
All external calls flow through a hardened gateway with full audit trail. License-bound access prevents unauthorized use, and credentials are managed centrally — never exposed on the operator's machine.
Slots into the tools you already use
Keep using the tools you already have. No new hardware, no training. Install the app → connect your mic → press Start. Done.
Communities where many nations gather under one roof
Multilingual churches
Essential for diaspora churches — sermons translated and interpreted into 49 languages simultaneously.
Missions conferences
One speaker, 30+ attendees in different languages — no booths, no headset rentals; a phone is all anyone needs to hear the interpretation.
Online ministry
Live captions delivered through YouTube, Twitch, Zoom, and similar platforms.
Bible studies
Korean, Chinese, English, or any language — everyone follows the same Bible study in real time.
Reach overseas viewers with subtitles and dubbing
From Sunday live streams to YouTube uploads, every translation is auto-saved to the cloud after each session, ready for download anytime. Your church's video ministry reaches a global congregation.
Live stream captions on YouTube
Drop the LiveTransVoice overlay URL into OBS Studio's Browser Source — the translated captions are composited onto your YouTube Live broadcast, in the language(s) you choose to show. No third-party caption service required.
Auto-generated SRT/VTT subtitles
Press Stop when the service ends and SRT and VTT subtitle files are created for every language you interpreted, saved to the cloud archive. Upload them straight to YouTube — no manual transcription, no separate translation workflow.
Per-language audio (MP3)
The interpreted audio of each language your listeners actually heard in the listening room is saved as MP3 and kept for 90 days; depending on the interpretation mode, the original voice is saved too. Add it to your video edit as an alternate language track, or share it as a podcast.
Every sermon, preserved and shareable
Each session leaves an archive — subtitles for every language you interpreted, plus audio for the languages listeners heard — uploaded to the LiveTransVoice cloud archive. Members visit a per-church URL, enter a 6-character code, and replay.
Auto-uploaded to the cloud archive
Press Stop and the subtitles (SRT + VTT) and audio (MP3) go straight to the cloud. No manual export step. Subtitles stay in the archive; audio is kept for 90 days.
Code-gated per-church page
Each church gets its own URL livetransvoice.com/community/your-church. The operator shares a 6-character access code with the congregation; outsiders can't browse without it.
Optional cross-church discovery
Operators can flip individual sermons to a public community feed visible at livetransvoice.com/community, letting visitors discover other multilingual churches without entering any access code.
Korean sermon, 49 languages supported
From Seoul to São Paulo. Searchable picker below covers every supported language with native-script labels.
Frequently asked questions
How much does it cost to use?
LiveTransVoice is a usage-based service — you pay only for what you actually use. The service exists to serve churches. Top up credits when your license is issued and you can start immediately.
Does it work on Mac or mobile?
The operator app (the one that broadcasts the sermon) currently runs on Windows 10/11 only. A Mac version is under consideration. Listeners (the audience) can connect from iOS, Android, Mac, or Windows browsers — no app install required.
What languages are supported?
Korean, English, Japanese, Chinese (Traditional/Simplified), Spanish, Vietnamese, Indonesian, Thai, Arabic, Russian and 39 more — 49 languages total. One sermon broadcasts to multiple languages simultaneously, and each listener picks their own from their phone.
How do I add subtitles to YouTube live or video?
Two ways. (1) Live broadcast: add the LiveTransVoice overlay URL to OBS Studio's Browser Source and the translated captions appear on the stream. (2) After the service: press Stop and SRT/VTT subtitle files are created for every language you interpreted and saved to the cloud archive — download them and upload to YouTube.
Are the original and translated audio archived?
Yes. When you press Stop, everything uploads to the cloud archive automatically. Subtitles (SRT/VTT) for every language you interpreted stay in the archive. Audio (MP3) is saved only for the languages listeners actually heard in the listening room (plus the original voice, depending on the mode) and is kept for 90 days. The operator can delete a session at any time.
Do listeners need to install an app?
No. Listeners click a link or scan a QR code the operator shares — their phone or PC browser opens, and the captions and audio start playing in their selected language immediately. iOS, Android, Mac, and Windows are all supported, no install.
Ready for Sunday?
Install in minutes. No technical setup required. Translation and live interpretation are ready immediately.