シンギュラリティ・ソサエティPublicationへの投稿
🔌

MulmoCast Claude Plugin - Create Video Presentations from Claude Code

Isamu
に公開
AI
plugin
presentation
Claude Code
MulmoCast
tech

What is MulmoCast Claude Plugin?

MulmoCast Claude Plugin is a plugin that lets you create video presentations directly from Claude Code.

Just provide a URL, topic, or document, and it automatically handles everything from research to narration writing, slide design, and video generation.

https://github.com/receptron/mulmocast-claude-plugin

Features

  • Create videos from URLs: Fetch and analyze articles, then generate professional presentation videos
  • Create videos from topics: Research via web search and generate videos with data-rich slides
  • Create videos from documents: Read PDF or text files and compile them into videos
  • Multilingual support: Supports Japanese and English

Installation

# Step 1: Add the marketplace
claude plugin marketplace add receptron/mulmocast-claude-plugin

# Step 2: Install the plugin
claude plugin install mulmocast@mulmocast-plugins

Updating

To update the plugin to the latest version:

# Update the marketplace catalog
/plugin marketplace update mulmocast-plugins

# Update the plugin
/plugin update mulmocast@mulmocast-plugins

The commit hash is pinned at install time, so marketplace update alone won't update the plugin itself. You need to run /plugin update as well.

Prerequisites

  • Node.js 22+
  • ffmpeg — Used for combining video and audio
  • OPENAI_API_KEY — Text-to-speech (default TTS provider)

Optionally, GEMINI_API_KEY (image generation / TTS), REPLICATE_API_TOKEN (video generation), and ELEVENLABS_API_KEY (TTS) are also available.

Usage

Run the /mulmocast:story command in Claude Code.

/mulmocast:story https://example.com/article make a movie in English

/mulmocast:story AI trends in 2026, 5 slides, English

/mulmocast:story path/to/quarterly-report.pdf

You can also specify a cinematic style:

/mulmocast:story Introduce MulmoCast with a Star Wars opening crawl

/mulmocast:story https://example.com/article Terminator HUD style, English

/mulmocast:story Latest trends in quantum computing, Evangelion alert screen style

5-Phase Structured Process

The plugin creates videos through an interactive 5-phase process. User approval is obtained at each phase before proceeding.

Phase 1: Research

Collects and analyzes content based on the input source.

  • URL: Fetch and parse pages with WebFetch or Playwright
  • Topic: Search 3–5 sources with WebSearch
  • File: Read documents and identify themes

Research results are presented as a Topic Brief to confirm the theme, tone, and key insights.

Phase 2: Structure

Determines the number of beats based on content volume and presents a Beat Outline.

Source Length Beat Count Structure
Short (1 article) 3–8 HOOK → SECTIONS → CLOSE
Medium (long article) 8–15 HOOK → (SECTION × N) → CLOSE
Long (report) 15–25 HOOK → (CHAPTER × N) → CLOSE

Phase 3: Narration

Creates spoken narration for each beat.

  • 2–4 sentences per beat (30–60 words)
  • Natural spoken rhythm
  • Includes specific numbers and names

Phase 4: Visual Design

Designs slides using 11 layout types and 12 content block types.

Layouts: title, columns, comparison, grid, bigQuote, stats, timeline, split, matrix, table, funnel

Content blocks: text, bullets, code, callout, metric, divider, image, imageRef, chart, mermaid, table, section

Slide density is automatically adjusted based on beat count.

Beat Count Density Approach
3–5 Maximum Pack like a cheat sheet
6–10 Standard 3–5 points/slide + images
11+ Relaxed 1 point/slide, generous whitespace

Phase 5: Assembly

Assembles narrations and visuals into MulmoScript JSON and generates the video.

Output: output/video/<basename>.mp4

Slide Themes

Automatically selects from 6 preset themes to match the content.

Content Type Theme
Business news, financial data corporate (default)
Pop culture, entertainment pop
Education, tutorials warm
Academic, research minimal
Startups, design creative
Tech, developer-focused dark

Cinematic Animations

In addition to slide-based presentations, you can create cinematic effects using html_tailwind animations. CSS animations and JavaScript programmatically generate movie and anime-style HUD overlays and scene backgrounds.

14 cinematic themes are available:

# Theme Features
1 Space Opera (Star Wars) 3D opening crawl, starfield generation
2 Cyberpunk Terminal (Ghost in the Shell) Neon green terminal, CRT scanlines
3 Mecha Anime (Evangelion) Red alert screen, typewriter, status counters
4 Film Noir Monochrome, venetian blinds, smoke effects
5 Retro Synthwave / 80s Neon grid, sunset gradients
6 Matrix / Digital Rain Digital rain, green code
7 Documentary / Nature Ken Burns effect, subtitle overlay
8 Anime Opening Speed lines, dynamic text
9 Horror / Thriller Glitch, red flash, noise
10 Terminator T-800 Vision City silhouette generation, targeting brackets
11 Dragon Ball Scouter Power level counter, warrior silhouette, lens frame
12 Blade Runner 3-layer cityscape, neon signs, rain
13 Total Recall Mars gradient, dome structures, brain scan
14 Iron Man JARVIS HUD Hexagonal grid, 3D hologram panels

Sample Video

A showcase video featuring all 14 themes:

Just instruct with phrases like "Star Wars style" or "Terminator HUD" and the matching cinematic animation is automatically generated.

シンギュラリティ・ソサエティ
シンギュラリティ・ソサエティPublication

人工知能を活用したアプリケーションやサービスを活用し、内発的動機付けで行動するエンジニア、起業家、社会起業家をサポートするコミュニティーです。 singularitysociety.org Supported by 週刊 Life is beautiful

Discussion