SKILL.md
moviepy for Video Production
moviepy is the toolkit's go-to library for putting deterministic text on top of AI-generated video and for building short, single-file Python video projects without a Remotion toolchain.
The deeper principle is trustworthy text: any genre where text has to be readable, accurate, and consistent (legally, editorially, or commercially) is a genre where AI-rendered in-frame text is unacceptable and a moviepy overlay step is the natural fix. Names must be spelled right. Prices must be exact. Source attributions must be pixel-perfect. AI generation models cannot guarantee any of that.
When to use moviepy vs. Remotion
| Use moviepy when… | Use Remotion when… |
|---|---|
| Overlaying text/labels on an LTX-2 or SadTalker output | Building long-form sprint reviews or product demos |
Building sub-30s ad-style spots in a single build.py |
Multi-template, multi-brand, design-heavy work |
Compositing data-driven visuals (matplotlib FuncAnimation → mp4) |
Anything needing React components or design system reuse |
| One-off transformations on existing video files | Anything where the project lifecycle (planning → render) matters |
| You want zero Node.js / no React mental overhead | You want hot-reload preview in Remotion Studio |
Two runnable references for everything in this skill live in examples/: