This task can be performed using Vocablii
Turn YouTube videos into custom flashcards
Best product for this task

Vocablii
edtech
Vocablii helps language learners turn any YouTube video into flashcards, using real vocab from real content. Paste a link, get an interactive transcript, and auto-generate spaced repetition flashcards in seconds. Built for learners who want context, not canned textbook phrases. Currently supports 14 languages and works right in your browser. Free to try.

What to expect from an ideal product
- Paste any YouTube video link into vocablii and it automatically creates an interactive transcript that highlights all the vocabulary words worth learning
- The tool scans through the video content and pulls out the most useful words and phrases, saving you from manually writing down vocabulary while watching
- Each extracted word becomes a flashcard that includes the original context from the video, so you remember how native speakers actually use it
- The spaced repetition system automatically schedules when to review each word based on how well you know it, making your study time more effective
- You can study the vocabulary right in your browser without downloading anything, and the flashcards work offline once created