Live stream translation is real-time conversion of spoken speech into translated text subtitles during a live broadcast. StreamTranslate does this automatically in 30+ languages.
Start Translating Free → No credit card · 30+ languages · Works with OBS, Streamlabs, XSplitLive stream translation is the process of automatically converting a streamer's spoken words into translated subtitles in real time, displayed on the stream for viewers who speak different languages. Unlike post-production subtitles, live stream translation happens during the broadcast with under 500ms latency.
Modern live stream translation tools use speech recognition (STT) to transcribe the streamer's voice, then machine translation to convert it into the target language, then display it as a subtitle overlay on the stream via OBS browser source.
StreamTranslate uses Deepgram Nova-2 for speech recognition — one of the most accurate STT engines available — paired with a multi-provider translation layer that selects the best translation in real time. The result appears on stream with under 500ms latency end-to-end.
Over 40% of Twitch viewers are outside English-speaking countries. Without translation, those viewers can't follow along and typically leave within seconds. Live stream translation lets English-speaking streamers reach Spanish, Portuguese, Japanese, Korean, Chinese, Arabic, Hindi, French, German, and Russian-speaking audiences without hiring a translator or learning a new language.