YouDub

YouDub is an open-source video localization tool that translates, dubs, and generates hard subtitles for videos.

YouDub WebUI is a local video localization tool that processes YouTube, Bilibili, and local video inputs. It works by importing a video, transcribing and translating the content, separating vocals from background audio, generating dubbing, and mixing the final output. Users can choose outputs including hard-subtitled videos with original audio, dubbed videos without hard subtitles, or combined hard subtitles and dubbing. It supports YouTube English to Chinese, Bilibili Chinese to English, and local Japanese to Chinese dubbing workflows. It is designed for individual creators, developers, and small teams who want complete control over a local video localization pipeline using an open-source architecture.

YouDub at a glance

Best for: Social media creator
Runs on: Web, Windows, macOS, Linux, WSL2, self-hosted, open source
Pricing: Free
Released: December 2023
Category: AI video tool
Website: github.com/liuzhao1225/YouDub-webui

Key features

Translate YouTube, Bilibili, or local videos
Generate hard-subtitled videos
Separate vocals and background audio
Synthesize voice dubbing and mix audio
Upload local videos with pre-translated SRT subtitles
Configure OpenAI-compatible API translation settings
Process video inputs locally

Use it for

Translating and dubbing YouTube videos into Chinese
Localizing Bilibili videos into English
Generating hard subtitles and voiceovers for local video files
Isolating vocals and background music from media

Alternatives to YouDub

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SmartSub — Open source and free with local model processing and GPU acceleration.
AutoSubs — Runs entirely on your machine for free with zero data uploads.
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TubeBuddy — Provides comprehensive YouTube SEO and growth tools used by millions of creators.
Native Subtitle Quote Image — Extracts native embedded subtitles or generates script-based quote images with precise frame capture.
Toonflow — Automates the entire video creation workflow with multi-agent collaboration and character consistency.

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