#13 · Primary category: Translation & Localization

YouDub-webui

ai-dubbing ai-video-translation bilibili demucs fastapi ffmpeg multilingual-video nextjs open-source python speech-to-text subtitle-translation text-to-speech video-localization video-translation voice-cloning voxcpm whisper youtube youtube-translator

Open-source AI video localization and dubbing for YouTube/Bilibili: speech recognition, subtitle translation, voice cloning, audio mixing and rendering.

Project last updated:08/26/26

GitHub Stars

5.4K

Forks

584

Contributors

7

License

Apache-2.0

Why we included this project

The bottleneck in localizing a foreign-language video is rarely a single step; it's the plumbing that connects downloading a clip, separating the vocals, transcribing and translating, and generating a dubbed track with subtitles. YouDub WebUI packages that chain into a self-hosted web app: feed it a YouTube or Bilibili link and it returns a playable, downloadable version in the target language, without sending your footage to a third-party service. The pipeline leans on established open-source pieces, including Whisper-style speech recognition, Demucs vocal separation, and a voice-cloning TTS layer, and its most mature route is English to Chinese, with Chinese to English supported through the same flow. The strongest proof it holds up under real load is that the author's own Bilibili channel, with over a million followers, runs entirely on it. For creators and small teams that want to own, debug, and modify their localization stack, the architecture is simple enough to inspect and change.

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