Pdf2Video

Overview

Take a course package already produced by codex2course and turn it into a narrated lecture video. Stages: sanity-check inputs → set audio params → write per-slide narration (hard stop for review) → synthesize per-slide audio → assemble slides + audio into one course-video.mp4 with ffmpeg.

REQUIRED UPSTREAM: This skill assumes a directory produced by codex2course — outline.md, handout.md, slide-units/NNN-*.md, slides/000-cover.png + NNN-*.png + zzz-ending.png. If anything is missing, send the user back to codex2course first.

When to Use

Use this skill for:

• Adding a voiced narration track to an already-rendered slide deck
• Producing lecture / tutorial / training videos where each slide stays on screen for the duration of its narration
• Regenerating audio or video for a small set of slides after content edits

Do not use this skill when:

• Slides have not been rendered yet — run codex2course first
• The user wants live-action video, screen recording, or animated transitions — this skill produces static-image-per-page video only