PERFORM ADVANCED COMPOSITING WITH AOVS
3D World UK|March 2021
Denis Kozlov details his approach for compositing the final look of his visually striking short film
Denis Kozlov

Made of shapes, colours and a bit of story, dERIVATIVE is a short film I have directed for the wonderful Mixpoint Studio in Prague. It follows through a row of visual transformations and is likely to be more a work of motion design than a classical CG animation.

For this project I had the chance to personally craft every single pixel of the final film (which is freely available at vimeo. com/458135379). What has really helped me is a compositingcentred workflow, which I’d like to talk about in this tutorial.

It’s not uncommon among 3D artists in the film and animation industries to overlook compositing as a mere slapping of a few effects nodes to fancy up the picture or hide some mistakes at the end of the work. And sadly enough, game development seems to be almost ignorant of compositing as a discipline – at least that’s the impression I’ve been getting. Yet you can do almost anything to your creations in comp – build the whole animation from the ground up, do shading and look development and completely redesign the already rendered scenes – all at the much more interactive speeds than traditional 3D animation pipelines would allow.

The key is breaking up the renders into passes, also known as Render Elements or Arbitrary Output Variables (AOVs). While there’s only so much you can do with a single beauty pass, a full set of AOVs unlocks a whole range of options. Here’s my approach.

01 SHUFFLE THE ELEMENTS IN

The first step is to import the 3D renders into Fusion. I typically render to multi-channel EXR file format, and instead of using multiple Loaders I often prefer to shuffle the extra AOVs into the technical slots at the EXR Format tab. Remember that channels are just numerical data and you can generally put any pass into any slot and easily extract or rearrange them later!

Then I’d use the Channel Booleans node to move these AOVs into the RGB channels and treat them as regular images further on. Minimising the number of loaders makes it easier to update the source renders with new versions.

02 STOCK UP ON MASKS

Continue reading your story on the app

Continue reading your story in the magazine

RELATED STORIES

Old Fashion and True Moments

Film Photography is a big world of its own, with various techniques, cameras, and actions. Old-time photography is priceless; it is a living testimonial of rich heritage.

3 mins read
Lens Magazine
March 2021

The Road to Dharma A Different Motorcycle Adventure Series

The Road To Dharma

2 mins read
Adventure Motorcycle (ADVMoto)
September-October 2020

Designs for life

The Czech Republic has a rich design heritage, and today’s generation is doing it proud

5 mins read
Business Traveler
March 2020

Possibilities In Prague

The Czech capital excels at making business a pleasure.

3 mins read
Global Traveler
April 2019

Russia says it will retaliate again if Czech spy row escalates

Czech Republic demands that Russia allow the return of all 20 staff to Moscow by Thursday or face further evictions of its diplomats from Prague; thousands defy Russian ban on pro-Navalny rallies

3 mins read
Gulf Today
April 23, 2021

ART Wear

The works of Italian photographer Franco Fontana, which focus on form and colour, become art-à-porter for the fifth sportmax denim culture collection. Fontana tells us more about the capsule

2 mins read
L'OFFICIEL Singapore
March 2021

WHERE HISTORY MEETS FUTURE

FIVE IS A COMMERCIAL BUILDING DEVELOPED BY QARTA ARCHITEKTURA

3 mins read
Architect and Interiors India
February 2021

Where history meets future

Five is a commercial building developed

3 mins read
Commercial Design
February 2021

Inspired Ink

South Korean artist JIEUN PARK gives us the lowdown on what inspires and drives her passion for her Chinese ink art.

4 mins read
EL Singapore
February 2021

Education redefined

Multi-skilling is the new trend in globalised PhyGital learning

5 mins read
Outlook Money
January 2021