BUTTERFLY ENGINEAI documentary production engine
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Story Factory / Product preview

One topic. A finished documentary.

Butterfly Story Factory is the local Windows studio built on Butterfly Engine. This page is a visual preview of the real panel — the application itself runs on your PC.

Request the Developer Edition Try the panel

Available as a Developer EditionDeveloper Edition · Windows 10 / 11

Try the panel

The real workflow, in your browser.

Choose a topic, duration and language pair, then run a simulated production. The real app performs the same steps locally on Windows.

INTERACTIVE PANEL / 01
127.0.0.1:8765 / butterfly-story-factory Interactive demo

New video

Pick a topic and a duration. Everything else is automatic.

Demo mode

New video

Pick a topic and a duration. Everything else is automatic.

1
Duration
Quality and cost
Selected tier Standard ≈ $2.35 · 5 min
Pick one tier for this production. The estimate follows the length you choose.
Topic
Auto-detected from your topic
Visual style
Output 1080p · MP4 · H.264
Interactive preview. The production app runs on Windows and keeps every file on your machine. Request the Developer Edition

Create

Pick a topic, format and language pair. The real app runs the same seven-stage pipeline locally.

Library

Every finished production stays on your disk. Open a project to replay, re-export or inspect its storyboard.

Providers

Three quality tiers run on one OpenRouter key; manual mode lets you mix OpenAI, Gemini, ElevenLabs and local providers per stage.

OWN THE STUDIO

The panel is the demo. The studio runs on your PC.

One-time license, full source code, unlimited local productions.

From $349 · founding price for the first 50.

  • One-time license · unlimited local productions
  • Your own API key · no per-video fee
  • Commercial license — sell the videos you make

Crypto payment only for now. We'll contact you by email with payment details; other methods will be added later.

Accepted: USDT (TRC20) · USDC (ERC20, Base, Arbitrum, Solana) · BNB (BSC) · SOL (Solana) · BTC.

The code is updated frequently. You receive the latest version available at the time of purchase.

Seat = one named person using the studio on one Windows machine. Seats are license terms, not device-locked DRM. Source code is included in every tier.

For solo creators

Creator

$499 $349 First 50

1 named user license

The complete local studio on one Windows machine.

  • 1 named user license · commercial use
  • Full source code + installer
  • 3 / 5 / 8 / 12 min + 30s Reels
Most popular

For small teams

Studio

$999 $799 First 50

Up to 3 named users

More seats for client work, with priority support.

  • Everything in Creator
  • Up to 3 named users
  • Commercial client work

For agencies

White-label

$2,499 $1,999 First 50

Up to 3 internal users + unlimited client projects

Put your brand on the studio and deliver to clients.

  • Everything in Studio
  • White-label rights
  • Unlimited client projects

Request pricing

Tell us what you need. We'll send the right license and price.

No spam. Your details are only used to answer this request.

DELIVERY

  • EXE installer Run the Windows installer. FFmpeg is included and the app installs per user.
  • Portable folder + EXE Unzip the ready-to-run folder and launch the EXE. No installer needed.
  • Source ZIP Give the source to your AI assistant or install it yourself with Python.

REAL OUTPUTS / 20–30 SEC

Two formats. One engine.

Two real 20-second demo teasers and one full 24-second production in both formats — all from the same engine.

20–30S / 16:9 + 9:16
16:9
Apollo 11 16:9 · 20s · Turkish narration · Turkish subtitles
20s
9:16
The Great Emu War 9:16 · 20s · English narration · Turkish subtitles
20s
16:9
The Wright Brothers - First Flight 16:9 · 24 s · English narration · burned-in subtitles
24s
9:16
The Wright Brothers - Vertical cut 9:16 · 24 s · same production, reframed
24s

PUBLISHING PACK

Every production ships with its YouTube and TikTok kit

Poster, thumbnail, title, description, tags, chapters and metadata — generated from the same run.

Wright Flyer thumbnail
1280×720 thumbnail · 1920×1080 poster
The Twelve Seconds That Changed the Sky

Two bicycle mechanics, a freezing sandbar and twelve seconds that proved controlled flight was possible. A 24-second documentary on the 1903 Wright Flyer.

#WrightBrothers#KittyHawk#FirstFlight#1903#Documentary

1080p · 24 s · 16:9 + 9:16 · EN narration · burned-in subtitles · SRT sidecar

Generated copy is shown exactly as produced, in English.

  1. 00:00 Impossible?
  2. 00:05 Kitty Hawk
  3. 00:10 Engine roars
  4. 00:15 Airborne
  5. 00:19 The question

LIVE DEMO / CODE GATED

Generate your own 20-second teaser.

Enter your email and activation code. One code produces one video. Choose the format, topic and language pair.

CODE / 01
Try one of these
Choose a frame

One code = one video. The result link stays available for 72 hours.

02 / How it works

One topic. Four connected steps.

No timeline assembly, no manual subtitle sync, no scattered asset folders.

FLOW / 04 STEPS
01
BRIEF

Describe

One topic and optional guidance. The idea language is detected automatically.

  • One topic, optional guidance
  • Format + independent language pair
02
SCRIPT

Write

Gemini builds a scene-by-scene documentary script with a clear causal spine.

  • Scene-by-scene script
  • Visual continuity and narration timing
03
ASSETS

Produce

Scene images, narration, subtitles, music and a 1080p timeline are assembled.

  • 7 cinematic stills or reference frames
  • Narration, music, subtitles and 1080p timeline
04
MP4

Deliver

A finished MP4 and 30-second vertical Reels are written to your disk.

  • Horizontal MP4 or vertical 9:16 cut
  • Share-ready file with burned-in subtitles

ROI calculator

What is manual editing really costing you?

Estimate the monthly cost of editing by hand versus producing with Butterfly Story Factory. The result is an illustration, not a quote.

Manual cost / month$0
Butterfly cost / month$0
Monthly saving$0
Hours freed / month0
License payback0

Butterfly cost = API cost × videos + license ÷ 12. Actual provider costs depend on duration, images and voice.

DEVELOPER EDITION / 1.3.2

Own the studio, not a subscription.

A complete local production system for Windows. One license, your API keys, unlimited productions, and the source code in your hands.

VERSION 1.3.2

Local by design

Runs on your PC. Every image, voice file and MP4 stays on your disk.

Full source code

Read, modify and extend the pipeline. No black box, no vendor lock-in.

24 narration languages

Narration and subtitles are independent tracks. Pair any two.

1080p + vertical Reels

Long-form documentaries and a 9:16 cut from the same production.

Three quality tiers

One OpenRouter key covers stills, narration and score at three price levels.

Manual APIs when you need them

Mix OpenAI, Gemini, ElevenLabs, Google Cloud and local providers per stage.

Private credentials

Keys are encrypted with Windows DPAPI and never leave your machine.

Commercial license

Single-user commercial use with no per-video fee.

What the Developer Edition gives you

The public demo is a 20-second taste. The Developer Edition is the full studio.

Developer Edition Public demo
Where it runs Your Windows PC Hosted in the cloud
Video length 3 / 5 / 8 / 12 min + 30s Reels 20-second teaser
Languages 24 narration + subtitle tracks 15 demo languages
Source code Included Not included
Production limit Unlimited local jobs 1 code = 1 video
API key Your own OpenRouter or manual API keys Hosted by us
Output Local files, yours forever 72-hour signed link
License One-time commercial license Free demo
Butterfly Story Factory

04 / Early access

Build your next documentary.

Request the Developer Edition or ask a question about the local workflow.

Only early-access updates. No spam.

Request the Developer Edition Back to Butterfly Engine