Live stream translation is real-time conversion of spoken speech into translated text subtitles during a live broadcast. StreamTranslate does this automatically in 28+ languages.
Start Translating Free → No credit card · 28+ 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 2-second 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 2-second 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.