flipnote.js

flipnote.js

Enables browser-based playback of the proprietary animation formats used by Flipnote Studio and Flipnote Studio 3D, powered by WebGL.

I hope that maybe in the long term it will serve some use in archiving Flipnote animations, epecially given that the online services for both applications have been closed down.

Features

• Perfect image and audio playback for animation files from Flipnote Studio (.ppm) and Flipnote Studio 3D (.kwz)
• Dynamic upscaling/downscaling
• Metadata parsing
• Player API based on the HTML5 Video and Audio APIs

Demo

Check out Flipnote Player for a live demo. :)

Authors

• James Daniel

License

This project is licensed under the MIT License - see the LICENSE.md file for details.

Building

Install dependencies:

npm install

Build:

npm run build

Run development server:

npm start

Acknowledgments

• KWZ format reverse-engineering: Kinnay, Khangaroo, MrNbaYoh, Shutterbug.
• PPM format reverse-engineering & documentaion: bricklife, mirai-iro, harimau_tigris, steven, yellows8 and PBSDS.
• Identifying the PPM sound codec: Midmad from Hatena Haiku (no longer active) and WDLMaster from the HCS forum.
• PBSDS for creating Hatena Tools, and for giving me some notes regarding areas where the documentation fell short.
• Stichting Mathematisch Centrum for writing this ADPCM to PCM converter in C which I semi-ported to JS to handle audio.
• Austin Burk and JoshuaDoes for helping to debug my Python3 PPM parser (which I used as a reference for the JS decoder).
• JSA for performing packet captures of Flipnote Hatena before it shut down, without them reverse-engineering the app in general would have been a huge pain.
• Nintendo for creating the Flipnote Studio application.
• Hatena for creating Flipnote Hatena, the now-defunct online service for sharing Flipnote Studio creations.