OCA, The Open Cel Animation format

OCA is an open format to ease the exchange of traditionnal/frame-by-frame/cel animation between different applications.

Principles

YOUTUBE

Implementation

We’re providing some implementations of OCA as add-ons for a few applications, and third-party developers have added support for it in their applications too. If the application you need is not listed, you can politely ask for it in a feature request and we’ll consider it.

App Add-on Exports Imports Comments Maintainer
After Effects DuIO - RxLaboratory / Duduf
Animation Paper Native ? Niels Krogh Mortensen
Blender Bluik Exporter for Grease Pencil planned. RxLaboratory / Duduf
Callipeg Native - Enoben
Fusion Reactor (using Vonk Ultra) - We Suck Less
Krita OCA for Krita RxLaboratory / Duduf
OpenToonz Native - Some limitations, see https://github.com/opentoonz/opentoonz/pull/4483 Dwango
Photoshop OCA - RxLaboratory / Duduf
TVPaint OCA - RxLaboratory / Duduf
XDTS OCA to XDTS converter XDTS is a format supported by OpenToonz, Tahoma, Clip Studio Paint EX and Toei Animation Digital Exposure Sheet. Wolf In A Bow

Legend:
| Available
| In development
| Planned
- | Not supported

Tip

The OCA format is made to be simple to export/import in any application and it should not be difficult to implement it/write your own script for your application.

Icon

You may use these icons when talking about or implementing OCA.

SVG: SVG icon

PNG: PNG icon

(Right-click on the images to save them)

Features

OCA supports the most common features of all drawing/animation software:

All these properties are stored in a simple JSON file, and the images are stored in standard image file formats: PNG, EXR, SVG

Everything is assembled in a folder which name ends with .oca. The JSON file is at the root, while the images are stored in subfolders corresponding to layers and groups.

More features may be added later, have a look at the Roadmap!

Specifications

JSON Objects

Values

License

Software

Copyright (C) 2020-2022 Nicolas Dufresne and Contributors.
This program is free software; you can redistribute them and/or modify them under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with DuBuilder. If not, see http://www.gnu.org/licenses/.

This Documentation

Copyright (C) 2020-2022 Nicolas Dufresne and Contributors.
Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation;
with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled “Documentation License”.

GNU GFDL