A field guide to making videos with code instead of cameras

What it does

This repo collects prompts people actually used to get Claude Opus 5.5 to produce videos — 18 full prompts and 54 public cases from the model’s first week, each with a link back to the original post. The trick is that Opus never outputs a video file: it writes code (HTML Canvas, p5.js, Three.js, Remotion, Manim, even Blender scripts) to draw every frame, then a headless browser screenshots frame-by-frame and FFmpeg stitches it into an MP4. Music comes from Web Audio or Python synthesis; narration hooks into TTS.

The interesting bit

The collection is honest about the ceiling: this approach shines at motion graphics, line-art and ink-wash animation, explainers, launch videos, and lyric MVs — and fails at photorealistic live-action. For realism, the documented pattern is to let Opus orchestrate while delegating actual footage to video models like Seedance or Runway. Also notable: some of the best results came from absurdly short prompts, including a startup launch video reportedly done in one minute for about two dollars.

Key highlights

• 18 complete prompts, from one-liners to an 847-character cinematic brief for a Battle of Austerlitz film
• Covers 9 technical routes: Canvas, p5.js, Three.js, Remotion, Manim, Blender, TTS narration, real-asset pipelines, and hybrid video-model workflows
• Includes practical field wisdom — e.g. one-author-at-a-time revision (“slow it down,” “more energy”), and a .claude/settings.json deny rule so Claude can’t read your TTS API key
• Two marathon prompts documented by outline only: a ~3000-character Japanese pixel-art runner and a ~2000-word MV pipeline mixing fal, Seedance 2.5, and frame-by-frame JS repainting
• Bilingual throughout — Chinese and English prompts both represented

Caveats

• It’s a prompt-and-casebook, not a tool: no code of its own to run, just curated text with source links
• Two of the longest prompts are only summarized with links, not reproduced in full
• Case quality is self-reported by authors on X, Bilibili, and forums; nothing here is independently verified

Verdict

Worth a browse if you want to try code-rendered video and want proven starting prompts instead of guessing. Skip it if you expected a library, a renderer, or anything you install — the repo’s entire value is other people’s homework, helpfully organized.