implement user story

[jacwu]

[jacwu]

@foundry get the detail of user story “US-S003: Interactive Video Lessons” of the kids english learning platform

[github-actions]

Here are the details for user story US‑S003 — "Interactive Video Lessons" from your PRD.

• ID / Title

  • US‑S003: Immersive Video Classroom — Interactive Video Lessons

• User story

  • As a student, I want to watch engaging animated video lessons with in‑video interactions so that I can learn English in an entertaining way.

• Acceptance criteria

  • Given a course is selected, when Start Learning is tapped, then the video starts within 3 seconds.
  • Given the video is playing, when an interaction point is reached, then the video pauses and a question is displayed.
  • Given an interactive question is shown, when the correct answer is chosen, then an encouraging animation and sound are played.
  • Given an interactive question is shown, when a wrong answer is chosen, then the correct answer and explanation are shown.
  • Given the video is playing, when Pause is tapped, then the video pauses immediately.
  • Given the lesson is completed, when returning to the course list, then the lesson is marked as completed and rewards are shown.

• Priority and estimate

  • Priority: P0
  • Estimate: 12 days

• Functional/implementation notes (from the PRD)

  • Description: immersive animated video courses with in‑video interactive questions to increase engagement.
  • Core features to implement:
    • Video playback: smooth playback, speed control, seek bar (P0).
    • Interaction points: insert multiple‑choice / drag questions at timeline key points (P0).
    • Progress saving: auto‑save and resume support (P0).
    • Subtitles: bilingual, toggleable (P1).
    • Offline download: members can download lessons for offline viewing (P2).
  • Key technical points:
    • Use H.264 / H.265 with adaptive bitrate.
    • Interaction engine: timeline‑triggered events that pause video and surface questions.
    • CDN acceleration / multi‑node distribution; target first frame < 1s.

Would you like this turned into:

• a one‑page user‑story card for the dev team (title, story, acceptance, estimate), or
• a breakdown into tasks/stories for front‑end, backend, QA, and content (with suggested subtasks and tech notes)?

Tell me which format you prefer and I’ll create it.