Natron lgm2014

Alexandre Gauthier-Foichat

LGM 2014

Leipzig, April 4th

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Table of contents

1 Introduction1 The project2 Why we do it3 License

2 Architecture1 Feature for v12 Performances3 Demand driven4 OpenFX support5 OpenFX current state

3 Conclusion

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The project

• Hosted in a research team at INRIA• Open-source, cross-platform nodal compositing software• Video editing and image processing• Funded since October 2013 as a result of an open-source

project contest

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Compositing in short

Image before matting Road Signs

Final image

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Why we do it

• Support OpenFX: standard to design visual effectsplug-ins.

• No open-source graphical software supporting OpenFX• But used by many proprietary applications: Nuke,Scratch,

Da Vinci resolve...• Natron first targets education and research domains

Alexandre Gauthier-Foichat 5/15

Why we do it

• Support OpenFX: standard to design visual effectsplug-ins.

• No open-source graphical software supporting OpenFX

• But used by many proprietary applications: Nuke,Scratch,Da Vinci resolve...

• Natron first targets education and research domains

Alexandre Gauthier-Foichat 5/15

Why we do it

• Support OpenFX: standard to design visual effectsplug-ins.

• No open-source graphical software supporting OpenFX• But used by many proprietary applications: Nuke,Scratch,

Da Vinci resolve...

• Natron first targets education and research domains

Alexandre Gauthier-Foichat 5/15

Why we do it

• Support OpenFX: standard to design visual effectsplug-ins.

• No open-source graphical software supporting OpenFX• But used by many proprietary applications: Nuke,Scratch,

Da Vinci resolve...• Natron first targets education and research domains

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License

• Most OpenFX plug-ins are commercial or released underBSD-style license.

• GPL programs cannot load non GPL plug-ins• This is probably why we don’t see many open-source

softwares around OpenFX• Natron is under Mozilla Public License (GPL compatible)

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License

• Most OpenFX plug-ins are commercial or released underBSD-style license.

• GPL programs cannot load non GPL plug-ins

• This is probably why we don’t see many open-sourcesoftwares around OpenFX

• Natron is under Mozilla Public License (GPL compatible)

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License

• Most OpenFX plug-ins are commercial or released underBSD-style license.

• GPL programs cannot load non GPL plug-ins• This is probably why we don’t see many open-source

softwares around OpenFX

• Natron is under Mozilla Public License (GPL compatible)

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License

• Most OpenFX plug-ins are commercial or released underBSD-style license.

• GPL programs cannot load non GPL plug-ins• This is probably why we don’t see many open-source

softwares around OpenFX• Natron is under Mozilla Public License (GPL compatible)

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Table of contents

1 Introduction1 The project2 Why we do it3 License

2 Architecture1 Feature for v12 Performances3 Demand driven4 OpenFX support5 OpenFX current state

3 Conclusion

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Features for v1

• Implementation of a performant rendering engine

• Animation support

• Support for OpenFX v1.3: Over 500 plug-ins available

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Features for v1

• Implementation of a performant rendering engine• Animation support

• Support for OpenFX v1.3: Over 500 plug-ins available

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Features for v1

• Implementation of a performant rendering engine• Animation support

• Support for OpenFX v1.3: Over 500 plug-ins available

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Based on many open-source libraries

• Qt: Graphical user interface and core library• Boost: Serialization of the project• OpenImageIO: Image reading/writing• OpenColorIO: Color management

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Performances

• Multi-threaded:

−→ A main-thread handling user events and OpenGLrendering−→ N render threads gathered in a pool

• Thread pool controlled by Natron• Asynchronous tasks asked by the plug-ins

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Performances

• Multi-threaded:−→ A main-thread handling user events and OpenGLrendering

−→ N render threads gathered in a pool• Thread pool controlled by Natron• Asynchronous tasks asked by the plug-ins

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Performances

• Multi-threaded:−→ A main-thread handling user events and OpenGLrendering−→ N render threads gathered in a pool

• Thread pool controlled by Natron• Asynchronous tasks asked by the plug-ins

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Demand driven

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OpenFX support

• Very stable API for writing visual effects.

• Efficient: about 500 lines of code for a plug-in• Plug-ins can be GPU accelerated using external libraries

like OpenCL or CUDA

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OpenFX support

• Very stable API for writing visual effects.• Efficient: about 500 lines of code for a plug-in

• Plug-ins can be GPU accelerated using external librarieslike OpenCL or CUDA

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OpenFX support

• Very stable API for writing visual effects.• Efficient: about 500 lines of code for a plug-in• Plug-ins can be GPU accelerated using external libraries

like OpenCL or CUDA

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OpenFX current state

• Many plug-ins, but most of them are proprietary.

• About 80 are open-source: TuttleOFX

• We need more open-source visual effects plug-ins

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OpenFX current state

• Many plug-ins, but most of them are proprietary.• About 80 are open-source: TuttleOFX

• We need more open-source visual effects plug-ins

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OpenFX current state

• Many plug-ins, but most of them are proprietary.• About 80 are open-source: TuttleOFX

• We need more open-source visual effects plug-ins

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Conclusion• Natron is in beta stage now and it’s a good time to join us.• We need people making packages for all linux distributions• Non developers are welcome: bug reporting,feedback,

demo reels, tutorials, translation...

• Download at https://natron.inria.fr• Mailing list: [email protected]

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Thank you

• Thanks for your time !• Any questions ?

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