# AI generated video - what is spoolcast? spoolcast — the illustrated short-form video pipeline for builders. core message: getting attention can be a passive process now. Type: project entry Published: 2026-04-21 [Original page]() [Browse this group]() Parent project: spoolcast Series: features Recorded status: launched Updated: 2026-09-16T16:22:48.125Z Technologies: React, Python, spoolcast, Remotion, Google Cloud TTS, kie.ai, OpenCV, Claude Tags: video, pipeline, dev tool, ai ## Details **What this is** An 8-minute AI-generated explainer video about spoolcast — the pipeline that rendered the video. the pipeline is both the subject and the thing that made it. **What it covers** - cold open: the problem (you build things, marketing is a separate job) - anatomy: 6 rules that keep the script from being slop - budget: ~$3 per 5-minute video - the four layers: image / animation / voice / render — what each does and how they connect - proof: the actual pilot video this pipeline produced - the agent layer (still being built) that turns raw signals into shot lists automatically **How it works** Script becomes a shot list — one row per sentence the narrator says. Each chunk gets one AI-generated illustration, style-locked via image-ref chaining. A python script computes a per-pixel reveal-time map for stroke-by-stroke paint-in. Google cloud chirp3-hd handles narration at 1.1x. Remotion renders headless into an mp4. The 9-render iteration exposed the gap between "script works on paper" and "video lands on a viewer." Fixes along the way: a reveal-group concept for rhythmic beat clusters, act bumpers at section boundaries, a preview-must-explain rule for act openers, zero-prior-context rule for thumbnails, anti-self-hedge rule for title/thumbnail language, targeted speaking-rate adjustments on specific beats that landed too fast. **Built with** Remotion, React, Python, OpenCV, kie.ai (nano-banana-2), Google cloud chirp3-hd, Claude Code (editorial agent). ## Links [Site or demo]() [Video]() ## Related build notes [shipped the first spoolcast video]() [Video guidebook]() Status and dates describe the published record, not a recent test of an external service. Missing details are not inferred. Public links do not imply an open-source licence or permission to reuse material. [Directory]()