Source
Repository and examples
Read the primary source.
Reference illustration, not a screenshot of this source.
Hand-drawn explainer (Nikola)
Agent skill for explainer videos · Video
A Codex skill that turns a topic, a script or a subtitle file into an explainer video drawn stroke by stroke, or animated as cards and diagrams.
Use it for
Choose when an idea should be drawn in front of the viewer, one part at a time, with subtitles and an editable project.
Choose something else for
Not a quick template tool: it is written for Chinese narration and calls outside voice and image services.
Give it
Topic; Script; SRT subtitles; Source picture
Get back
MP4 video; Subtitles; Timeline; Editable project
How it is operated
Codex agent skill with Python scripts; its animated route renders with HyperFrames
Availability
Provider capabilities and historical Studio notes are distinguished below. Current account access, credits and runtime readiness were not tested.
How charging works
Free code under Apache-2.0; the voice and image services it calls are billed by their providers.
Where processing happens
Scripts run locally; narration and image generation go to the selected outside services.
Language support
Written for Chinese narration; another language needs another voice service.
Automate a content pipeline
★★★☆☆ 3/5 for this task
The only explainer in this set drawn stroke by stroke on one sheet, delivered as a real MP4 with subtitles; held back by Chinese-first narration and outside services.
Decision: Choose when an idea should be drawn in front of the viewer, one part at a time.
Limits and things to check
- Documentation and default narration are Chinese; the default voice is ByteDance Volcengine speech synthesis and needs its account.
- The stroke route draws from a source picture that has to be made first, for example with an image model.
Drawn stroke by stroke on one sheet rather than cut between shots. Its animated route uses HyperFrames, which renders HTML to MP4.
Evidence
Repository documentation and published example videos; no run on this Mac
Catalogue review: 2026-09-13. The evidence note identifies what was verified. This date does not imply a fresh tool test or verification of every linked source.
