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Stir fine gold and teal pigment bands into evolving marble swirls without losing their texture. An analytic divergence-free vortex field moves the pigment coordinates. Midpoint backtracing samples the original layered pattern for each frame, avoiding cumulative blur from repeatedly resampling a previous image. It models artistic pigment transport rather than a full fluid solver. Reuse supplied assets or quote new media through PopNow.

Uses PopNow for
Music & voice
Needs
Python 3 · FFmpeg

Generation is optional when you have suitable input material.

v1.0.0 · Updated Oct 25, 2026 · 3.8 MB · Use it for personal and client work; please don't resell or share the package.

What you get

  1. An editable 8-second 720p sample and local MP4 renderer, silent.

  2. The vortex paths, pigment layers and backtracing are already connected. Changing the stirring strength changes the transported pattern itself, while the original texture stays available for every new frame.

  3. A six-frame contact sheet, render receipt and input self-check.

Good for

  • Abstract motion backgrounds with reproducible variation
  • Short material studies for art and design reels

Not for

  • The flow is prescribed analytically; it does not solve pressure, viscosity, surface tension or interactions with real liquid boundaries.

How it works

Includes a local renderer

  1. Choose the material

    No image is required. Pigment bands, vortex positions and metallic accents are generated locally from the seed.

  2. Shape the motion

    Edit the documented project controls, then validate the exact settings. Stir strength from 0.3 to 2 controls transport velocity.

  3. Render and review

    Export locally to MP4, inspect the contact sheet and watch the whole film. Watch the whole film for fine texture retention and smooth transport rather than large blurred regions.

How the workflow runs

How Ink Marbling Story works

An analytic divergence-free vortex field moves the pigment coordinates. Midpoint backtracing samples the original layered pattern for each frame, avoiding cumulative blur from repeatedly resampling a previous image. It models artistic pigment transport rather than a full fluid solver.

What's inside the skill

What you can change

  • Stir strength from 0.3 to 2 controls transport velocity.
  • Two to seven vortices define separate stirring centers.
  • The seed changes the stirring layout, and accent sets the gold-like pigment color.

What to review before delivery

  • The local self-check compares three frame samples after a meaningful input change and rejects its documented invalid case.
  • Output protection rejects overlap with input files and preserves existing sidecars unless overwrite is explicit.
  • Watch the whole film for fine texture retention and smooth transport rather than large blurred regions. This final visual review is manual.

See the package files

These are selected working files from this edition, with their actual role. The complete download also contains instructions and applicable license notices.

  • The task-specific motion mechanism and supported inputs.

    scripts/scene.py

  • Protected MP4 export, contact sheet and hash receipt.

    scripts/runtime.py

  • Editable settings used by the supplied sample.

    examples/project.json

  • Actual changed-frame, invalid-input and output-protection checks.

    scripts/selftest.py

  • Input ranges, material placement and honest limits.

    references/inputs.md

Why use this skill

Start with this package

The vortex paths, pigment layers and backtracing are already connected. Changing the stirring strength changes the transported pattern itself, while the original texture stays available for every new frame.

What PopNow adds

Use PopNow for the missing Music & voice in this workflow. Keep adequate material you already own, then bring new assets back into the editing and assembly steps described here.

Compare the options

A prompt, your own skill, or this workflow?

Start with a prompt

Your agent can create from a plain request. The brief, visual rules, asset choices, output format and review process still need to be established for that project.

Write your own skill

You choose and maintain the reusable instructions, defaults, file structure and checks. This is useful when your process needs different rules or integrations.

A workflow created for PopNow

This workflow was built for PopNow. Its source files, included dependencies and applicable notices are part of the package; the scope described below belongs to this edition.

Guide reviewed Oct 25, 2026

What will this cost?

The supplied pigment pattern and motion are calculated locally. New music or sound effects are optional quoted PopNow requests; no generated image or video is required for the marbling.

Generation is optional when you have suitable input material. Free skill. New media is quoted before it runs.

The skill package

Free to install under your account's download allowance. The package license covers your own and client work; redistribution is excluded.

Existing assets and local work

Reusing suitable assets, editing files and running local assembly do not call a PopNow generation model. Your computer and any required runtime still do the work.

New AI images, clips or sound

Quoted for the actual model, inputs, count, duration and resolution. Extra alternatives, revisions or optional enhancement passes can add generation requests.

Your agent and hosting

Any subscription, hosted computer, deployment or other provider fee belongs to that service. Installing this skill does not include those services.

Check the cost of your version first

Your assistant can inspect the available models and quote the exact request first. You choose which optional passes to include and approve spending before generation.

Ask your assistant

  • Use the PopNow skill "Ink Marbling Story" for my project. List the inputs you can reuse, quote only the missing media, show the quoted total and flag any unpriced steps. Separate optional enhancements, and wait for my approval before starting anything paid.

How PopNow billing works

Connections using a PopNow API key, including API-key MCP connections, spend from the separate API balance in USD. A ChatGPT or Claude connection authorized through OAuth spends website credits. These balances are separate; the quote shown by your connection is the approval basis.

Download allowances and current account conditions apply. A free package does not mean unlimited free generation.

See model ratesAPI USD balanceWebsite credit packs

How to use it

You say

  • Use the PopNow skill "Ink Marbling Story" (ink-marbling-story) for this: Render the supplied 8-second example. Make a second version with stir_strength set to 0.5. Show the changed motion and quote any missing media before generation.

Then try

  • Show how the changed setting affects the actual motion.

  • Keep my adequate source material and prepare an optional soundtrack quote.

What to have ready

  • No image is required. Pigment bands, vortex positions and metallic accents are generated locally from the seed.
  • Python 3, Pillow, NumPy, FFmpeg and ffprobe
  • The project controls listed in the input contract

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Questions

Will the texture dissolve over repeated frames?

Each frame backtraces into the original pigment coordinates instead of repeatedly blurring the previous frame. Very strong deformation can still produce fine details that need visual review.

Does it simulate a real tray of paint?

No. It transports an authored pigment field through analytic vortices and does not model paint chemistry or fluid boundaries.

Can I reproduce a particular result?

Keep the seed and project settings. The local calculation is deterministic for the same software environment.

What is already packaged in Ink Marbling Story?

The task-specific motion mechanism and supported inputs. Protected MP4 export, contact sheet and hash receipt. Editable settings used by the supplied sample. Actual changed-frame, invalid-input and output-protection checks. Input ranges, material placement and honest limits.

Which parts of Ink Marbling Story can add a charge?

The supplied pigment pattern and motion are calculated locally. New music or sound effects are optional quoted PopNow requests; no generated image or video is required for the marbling. Connections using a PopNow API key, including API-key MCP connections, spend from the separate API balance in USD. A ChatGPT or Claude connection authorized through OAuth spends website credits. These balances are separate; the quote shown by your connection is the approval basis.

How does Ink Marbling Story differ from writing a prompt or my own skill?

The vortex paths, pigment layers and backtracing are already connected. Changing the stirring strength changes the transported pattern itself, while the original texture stays available for every new frame.