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 you can click through
- Select words or phrases from the transcript that you want to learn and vocablii instantly turns them into flashcards
- Each flashcard keeps the original context from the video so you remember how words are actually used in real conversations
- The built-in spaced repetition system schedules your flashcard reviews at the right intervals to help you remember vocabulary long-term
- Everything happens in your browser without downloads, and you can try it free to see if it works for your learning style