Prompt Generator

Fill in a website, app, brand, product, script, or rough idea, choose the video controls, then copy a complete AI prompt for generating a Cetus HTML composition.

Static by Design

This page runs only in your browser. It does not call an AI model. It builds a clear prompt you can paste into ChatGPT, Codex, Claude, Gemini, or another coding assistant.

Website, scenes, assets, and notes are optional. Leave them blank and the generated prompt will tell the AI to ask only when needed or create a polished plan itself.

For the Cetus file format and CLI flags, read the docs.

Video Brief

Assistant

Where Will You Paste It?

Chooses code block output or direct file creation.

Agent Access

Source

Website, App, Product, Brand, or Script

Optional. Leave blank if you want the assistant to ask for source material.

Instruction or Idea

Creative Direction

Video Type

Style

Scene Planning

Scenes are optional. The assistant can create them.

Pacing

Scenes or Beats

Output

Duration

FPS

Cetus accepts positive FPS values. High FPS can be slow.

Output Size

Format

HTML File Name

Video Output File

Assets and Audio

Audio

Assets

Extra Notes

Open Docs

Generated Prompt

How The Controls Map To Cetus

FPS

data-fps sets the composition default. --fps overrides it at render time. Total frames are duration * fps.

Size

data-width and data-height define the HTML canvas. --width and --height override the output size.

Format

.mp4 uses H.264 for broad compatibility. .webm uses VP9 and is useful for browser-native workflows.

Assistant Workflows

Chatbot

Generates a complete HTML code block plus save, preview, and render instructions. Best when the AI cannot edit your files.

Codex or Claude Code

Asks the agent to create cetus.html directly, list changed files, and provide the exact Cetus commands.

Terminal Agent

Requests a local file, safe command usage, validation when possible, and a final guide for changing FPS, duration, size, and format.

Template Ideas

Website Launch

Hero screenshot, product tagline, three feature callouts, final URL, 8 to 12 seconds.

Video Intro

Logo reveal, title, subtitle, quick motion accent, clean fade out, 3 to 6 seconds.

Product Demo

Interface panels, cursor path, feature labels, before/after result, 12 to 30 seconds.

Social Reel

Vertical 1080x1920 layout, fast captions, visual beats, strong final call to action.

Explainer

Problem statement, process steps, result screen, concise text, 20 to 45 seconds.

Brand System

Reusable colors, type scale, lower thirds, title cards, and end screens for repeated videos.

Example Render Commands

cetus render cetus.html -o out.mp4
cetus render cetus.html -o reel.mp4
cetus render cetus.html -o transparent.webm

# Override HTML defaults only when needed
cetus render cetus.html -o smooth.mp4 --fps 60
cetus render cetus.html -o vertical.mp4 --width 1080 --height 1920