Real-time offline dubbing for macOS — capture any app, transcribe, translate and speak locally.
Real-time, fully offline dubbing for macOS.
MacDub captures the audio of any app (Zoom, Teams, VLC, Safari, Chrome, Music — or the whole system), transcribes it, translates it and reads the translation aloud with a system voice, keeping the original quietly in the background like a documentary. Everything runs on your Mac with Apple's own frameworks. No cloud, no API keys, no virtual audio drivers, and the microphone is never touched.
The screenshots below were taken while MacDub dubbed Apple's WWDC25 session Bring advanced speech-to-text to your app with SpeechAnalyzer playing in Google Chrome, English → Spanish.
------ Dubbing — pick the app, the languages and a voice, press Start Live transcript — original + translation, the word being spoken highlighted, latency per sentence Floating subtitle bar — always on top of the video you are watching Menu bar panel — status, last lines, Start/Stop and quick controls Live translation (beta) — call app, microphone, both languages, a voice for each side, audio and/or chat Live conversation — you and them side by side, a "…" bubble while someone speaks, transcription · audio · total per sentence History › Dubbing — recorded audio with a live spectrum, the transcript following karaoke-style, playback modes, transcription · audio · total times per sentence, right-click to copy a line History › Live translation — each conversation as a chat, both sides' audio in one take, times per sentence, right-click to copy a line Subtitles — transcript options, floating bar and exports AI & MCP — local summaries and one-click MCP registration S
From the project README.
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Native macOS video editor that coding agents can drive: everything the UI does, Claude Code and Codex can do through the bashcut CLI or MCP server. Layered timeline, captions, voiceover, plugins.
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