tw2.mp4
Practice the words needed to understand a segment of a video. Useful for immersion learning as a beginner language learner.
A Chrome extension that creates vocabulary flashcards from YouTube subtitles using AI, with spaced repetition learning (FSRS algorithm).
- AI Vocabulary Extraction: Automatically extracts vocabulary from YouTube subtitles using OpenAI
- Spaced Repetition: Uses FSRS algorithm for optimal learning intervals
- Intelligent Caching: Avoids repeated API calls for the same content
- Practice Flow: Watch → Practice → Evaluate → Repeat
- Cross-browser Support: Chrome and Firefox compatible
- This add-on cannot be installed via extensions stores yet because I haven't got it signed yet, and I think my way of interacting with YouTube is a little naughty so I'm not sure it'd pass, so that's still on the roadmap.
- You can use this on Firefox theoretically, but only via
web-ext, but I can't get that to work on my machine, so no instructions yet.
- Download: Clone or download this repository
- Build: Run
npm install && npm run build - Install Extension:
- Open Chrome →
chrome://extensions/ - Enable "Developer mode" (top right toggle)
- Click "Load unpacked"
- Select the
distfolder from this project
- Open Chrome →
- Node.js and npm installed
- OpenAI API key
- Choose: Go to any YouTube video with subtitles
- Start Practice: Click "Start Practice" button below the video
- Add your OpenAI API key when asked
- Learn: Practice vocabulary flashcards with FSRS spaced repetition
- Watch: Watch the video segment that you just practiced for
- Evaluate: Rate your understanding after each segment
- Continue: Move to next subtitle segment
npm install
npm run build # Build for production
npm run dev # Development mode with watchThe extension uses OpenAI's API to extract vocabulary from subtitle text. API calls are minimized through intelligent caching. The costs of going through a whole video are usually between 1 and 30 cents in my experience.