Getting Started

We provide pre-built installers, ready to use without any development setup.

1️⃣ Download & Install

1. Visit the Releases page
2. Download: Gemini-Subtitle-Pro-x.x.x-win-x64.zip
3. Extract anywhere and run MioSub.exe

2️⃣ Configure API Key

Open Settings and enter your Gemini and OpenAI API Keys.

Important Notes

1. For local Whisper, see Local Whisper Setup
2. API Key must support Gemini 3 Flash, Gemini 3 Pro, and Gemini 2.5 Flash
3. Custom models not supported to ensure translation quality

3️⃣ Start Using

Enjoy! 🎉

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🧠 Technical Details

🎧 Auto Glossary Extraction

• Smart extraction of proper nouns (names, places, titles)
• Google Search verification for standard translations
• Generate glossary for consistent terminology

⚡ Long Context Translation

• Semantic segmentation into 5-10 minute chunks
• Full context preservation to avoid fragmentation
• Scene presets (anime, movie, news, tech) for style optimization

🗣️ Speaker Recognition

• Auto-detect and label multiple speakers
• Customizable speaker names and colors
• Merge adjacent same-speaker subtitles

🚀 Fully Automated Mode

Just paste a video link (YouTube/Bilibili):

1. Auto Download: yt-dlp downloads best quality
2. Audio Extraction: Extract audio with VAD segmentation
3. Smart Transcription: Whisper speech-to-text
4. AI Translation: Gemini context-aware translation
5. Auto Encode: FFmpeg burns subtitles (GPU accelerated)
6. Output: Ready MP4 with hardcoded subtitles