video-explainer-system

Produce a long-form (~20+ min, 16:9) operator-narrated deep-dive video — an orchestrated film of many small `explainer` segments (cold-open → Act I → sponsor → Act II → sponsor → Act III → CTA), assembled RAM-safely into one master with chapters + captions. Use when the user wants a "deep dive", "long-form explainer", "YouTube tutorial video", "20-minute video", or runs "/deepdive <topic>". Brand-parameterized (FWF-first). You author the plan + per-segment script/deck and drive the record/review loop; a pure-Python pipeline does narrate→align→render →mux per segment and conform→concat→validate for the master. Generation only — it writes a labeled program dir + crash-safe manifest; it NEVER posts to social platforms (that's Phase 3).

Turn a topic (or source document) into a visually dynamic HTML explainer deck and a narrated vertical video, end-to-end, using only local/free tools (Kokoro TTS, torchaudio forced alignment, Playwright, ffmpeg) plus this Claude session. Use when the user wants to "make an explainer video", "turn this into a Short/ Reel/TikTok", "create an explainer deck", or "/explainer <topic>". Supports topic-only OR source-driven (ingest a PDF/URL and frame a real figure/screenshot); aspects 9:16, 16:9, 4:5; fixed theme. Generation only — it writes a labeled output dir + manifest.json; it does NOT post to social platforms.