Quiz: generating and answering

How to use

In the "Quiz" section of the result page:

1. Pick a type (mixed / multiple-choice / true-false) → "Generate", and the AI creates 6-10 questions into the "question pool" (the first batch is all selected by default).
2. Want more → "Generate another set" to add candidates to the pool (no duplicates of existing ones); not happy → "Clear and redo" to regenerate a batch.
3. Click "Organize pool": in the lower "Question pool" press "＋ Add" to pick good questions into "Your quiz" above; there you can reorder with ↑ / ↓, "Remove" back to the pool, or "Delete" a question entirely (~10 recommended, no hard cap).
4. Answer → "Submit" → backend grading → shows your score, per-question right/wrong, the correct answer, an explanation, the evidence, and a timestamp (click to verify in the video).

Billing

• First generation: 1 credit (half price).
• Generate another set / Clear and redo: 2 credits each.
• Selecting / reordering / deleting / grading: free.
• Long videos scale by length (1–3 hr ×2, >3 hr ×3 — see How credits work).

Quality and limits

• Questions are generated by AI based only on the video content, with a source timestamp per question; they may still contain errors, so defer to the video (each question has one-click playback to verify).
• Questions are drawn from across the whole video; extremely long videos (several hours) may favor earlier content.
• Answers are stored on the server and don't appear on the page before you submit, to prevent "peeking at the source".