A stream translator is a tool that converts a streamer's spoken language into translated captions displayed on their live broadcast in real time. It combines speech-to-text transcription with machine translation, delivering translated subtitles via an OBS browser source overlay.
Streamer speaks → audio streams to cloud STT → text is translated → translated caption appears on broadcast via browser source. End-to-end latency is typically under 2 seconds.
Modern stream translators support 28+ languages, dual-language output, custom styling, low latency, and work on any streaming platform (Twitch, YouTube, Kick, TikTok).
68% of Twitch viewers are non-English speakers. Without a stream translator, those viewers can't engage. With one, streamers see 2-3x international audience growth within 90 days.
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