Silverwing Quick Tip: Octane 2021 AOVs in Cinema 4D

In this quick tip I explain how to use the new AOV / Multipass system in Octane 2021 and the new custom object mattes.
As always I hope you like it.

[@SlayeRFCSM]

Just a pure BIG THANX! A short but very clear and detailed explaner here. You saved me tons of time of testing and researching how to deal with the new system!

[@SilverwingVFX]

Thank you very much. Much appreciated!

[@rubenscheer]

After searching for months, finally I have found the tutorial I needed. Thank you for this tip!!! I subscribed!

[@SilverwingVFX]

Oh thank you very much for your nice words. And of course for subscribing 🙌

[@TylerWeitz]

Super helpful quick recap of the updates, thank you so much!

[@SilverwingVFX]

Thank you very much. Great to hear you found it helpful 🙌

[@pixelasm]

Welcome back Raphael and thanks for sharing your insight into AOVs. To be honest I have not yet used them as my last contracts all demanded either final images out of camera or minimal post production.

[@whitekraw]

Just upgraded from 2020. I was like WTF!. Thank you master!!!!!!

[@adamtubak]

Wiedermal ein Augenöffner! Thank you so much Mister!! :)

[@mirospain]

great tut here! I have lots of questions about how to set up shadwo catchers ... could you make another vid about that? that'd be AMAZIN!!

[@SilverwingVFX]

Hi Till. Thanks for your comment and suggestion. I actually don´t use shadow catchers 😇 What I usually do is working with render layers and use compositing to do get the shadows in. Maybe this is something for a future tut.

[@THEillebaS]

Is it possible to also separate out post processing fx specifically chromatic aberration with alpha?

[@SilverwingVFX]

Hey there and thank you very much for your comment and your patience waiting for my answer. It is possible to separate out post effects. Unfortunately Chromatic Aberration is one of the things that does not work as a post pass due to the shifting in pixels that is happening. So while stuff like glow and glints are usually overlayed and added to the image chromatic aberration alters the pixels of the original render. Hope this is understandable. If you have follow up questions, feel free to ask!

[@StylishGaz]

I don't understand what you're meant to do with a white pass that covers the reflection? How do you then composite a reflection that's for example red with that?

[@SilverwingVFX]

It just means that you have the main matte and also the reflection/refraction of that matte. Mattes are usually there for small corrections make something a little bit brighter, correct the color slightly ect. Maybe reflections are not that important but imagine a cherry in a cocktail glass and you want a matte for it. No chance with regular mattes because they would be hidden by the fluid / glass. So you can use refraction to make the matte show through.

[@StylishGaz]

@@SilverwingVFX How do you get a shadow AOV with emissive materials? Having a headache figuring this out. The shadows just blow up on the entire surface. Also how to do get a cryptomatte of an actual object with tons of other objects inside it. They all come out as hundreds of different colours. The documentation is abysmal on this, really struggling.

[@SilverwingVFX]

@@StylishGaz To help you, I would need to know what you are trying to achieve. using the Shadow AOV About Cryptomattes. You can use the material node name to get all different materials. That usually works. You can also use octane Object Tags and name them differently. Each different Name then will become its own Cryptomatte inside the Object Node Name pass. So just create a Octane Object Tag and rename the standard name "Octane ObjectTag" to e.g. 01, 02, 03 etc. Every distinct name will create its own Crypto Matte. Same names will be combined into one crypto matte.

[@MotionPunk]

Best tips ever!

[@pixelasm]

4:28 if values between black and white are also included you could create subselections within an AOV RGB channel. Also things like hardwood floors built with a cloner could receive different strengths of AOV masks on a per object basis but still only take one chanel :)

[@3rdDim3nsn3D]

Im a bit late, but thanks raf for that info! Its kind of a mixture of the vray wirecolor pass and cryptomattes, that is super exciting! Thx buddy!

[@SilverwingVFX]

Hey thanks a lot. Glad you liked it. Yeah its really usable. I use the new custom AOVs all the time!

[@TheGuruDesign]

how do I save just the Matte and not the reflection using custom AOV? would it have to be created with material AOV?

[@ClaudioPozoVeloso]

Bro! Just what I was looking for, thank you!

[@SilverwingVFX]

Awesome. Nice to hear that!

[@monkey280]

Hi Raphael, danke für das Tutorial. Ich versuche einen AOV (Irradiance) als Maske in einem Material zu verwenden, kriege das aber nicht hin. Hast du da einen Tipp?

[@SilverwingVFX]

Hi, kannst Du evtl genauer beschreiben, was du vor hast. Ich glaube nicht, dass man AOVs im Material-Kontext nutzen kann. Das würde ja einen Loop erzeugen. Falls Du versucht haben solltest, die AOV nodes im Textur Kontext einzubinden. Diese sind für die "AOV Groups" also das interne Octane Compsiting da, nicht für Texturen. Aber kann auch sein, dass ich Dein Vorhaben falsch interpretiere und mir auf die Sprünge geholfen werden muss.

[@monkey280]

@@SilverwingVFX Ah mega, dass du so schnell antwortest. Das mit dem Loop habe ich auch vermutet, Mist. :) Ich versuche zwei Materialien oder zwei Farben, egal, abhängig von Licht/Schatten auf dem Objekt zu mixen. Konkret: Planet Erde wird von Sonne angestrahlt, im Schatten möchte ich die Nachtbeleuchtung der Städte zeigen. Ich kann das zwar in der Post erledigen, fände es aber schöner das direkt im Rendering zu haben.

[@SilverwingVFX]

@@monkey280 Hey, danke auch für Deine schnelle Antwort. Ich denke mal, Du willst das so wie in dem aktuellen Blender tut machen. kzbin.info/www/bejne/Zoq9q3ukZc6tbrc Ich glaube das könnte man evtl. durch etwas vector mathe und normalen lösen. Weiß nicht genau, ob man OSL braucht. Octane hat inzwischen auch viele Mathe Nodes. Müsste aber auch etwas drüber nachdenken und ausprobieren.

[@monkey280]

@@SilverwingVFX Genau das. :) Ja mach mal, ich will dich da nicht aufhalten. 😛Danke für deine Zeit und dein Investment in die Community. Gruß von Monk3yheaD@artstation

[@matthewyang8685]

Thanks for the tutorial. Subcribing to your channel.

[@SilverwingVFX]

Oh, super nice hearing that. Very much appreciated! Thank you!

[@steventapia_motiondesigner]

Thanks for this Tutorial... I mean quick tip!!!

[@SilverwingVFX]

😄 Thank you. You very welcome!

[@yunyunyun790]

It's really helpfull! Thank you for the tip

[@oursonwelles]

Hi, thank you for the tip! I'm wondering if there's a reason to use layer IDs instead of Cryptomattes: smaller file size? Faster when used in Ae?

[@SilverwingVFX]

To my knowledge Cryptomatte does not support Reflections / Refractions. Also its always good to offer more flexibility :-)

[@MarcusRizzo]

wow!.. i never realized that aov manager button before xD.. i was setting everything adding manually xD.. thank you!

[@SilverwingVFX]

It was only recently added in the Release Candidate 2 of the 2021 version. So you probably have not seen it because it was not there ;-)

[@MarcusRizzo]

@@SilverwingVFX yeaaah!!! i updated just after seeing your video xD

[@MarcusRizzo]

@@SilverwingVFX one thing that i noticed at this new AOV system is that have no option to output the denoised beauty, and i cant find the way to do it. Do you know how to?

[@SilverwingVFX]

@@MarcusRizzo You are right. It seems like the easy option to save both the beauty aswell as a denoised bauty is gone (hopefully only for now) You could use the comp feature in Octane 2021 to assemble all the denoise passed to get a denoised beauty output. I will speak to the Developer about it.

[@bloodforfeathers]

I can see the render layers in the IPR but when I send it to the picture viewer they are all black, do you have any idea why this is happening?

[@SilverwingVFX]

If you are rendering EXRs you need to use the Extractor effect on them in After Effects. Not sure why this is the way it is, but that will make them show up. If you are rendering PNGs you might need to save through the octane saving dialog. Hope that helps

[@timotionz]

Hey there, thanks for the short description. But I have an issue, somehow when I'm rendering the AOV, somehow in output I'm getting a few AOVS, instead of one, for example when I'm export Shadow, I'm getting 3 image of different Shadows

[@MrKeyframes]

Thank you Raphael!

Thank you very much

[@SilverwingVFX]

Thank you for thanking me!

[@AlexAmbroziak]

Everything works great in the live viewer, but when I render the custom2 AOV it appears to have no data and is totally black. Any idea what causes this?

[@SilverwingVFX]

It,s a current bug in the way Octane packages these channels. You could get them to display with the extractor effect.

[@AlexAmbroziak]

@@SilverwingVFX Amazing, thank you.

[@3danimator]

Great Sir ❤❤❤

[@jamesgalligan3081]

Thank you!

[@dariomotion2757]

hellllll thank you so much !

[@SilverwingVFX]

You´re welcome!

[@esnoox8616]

I remember the legacy layer masks having problems with DoF and MB... di they fix it with this AOV System or is cryptomatte still the way to go? Oh and btw, good to see you back... love your calm thoughtfull way of teaching stuff. Still hoping for a in depth master class from you. :D

[@SilverwingVFX]

The Custom AOVs should mimic blur and DOF similar to the beauty. But they will not get rid of the fundamental problem with mattes when they are partly opaque. You would need to save out Deep EXRs (which Octane is capable of) to apply mattes to the right part of overlapping pixels of transparent / blurred objects. Thank you very much for your kind words. Making a truly good masterclass is a lot of work that I sort of shy away from. But never say never ;-)

[@germanmairen]

thx man!

[@justinshelley2541]

You should probably mention that this is for C4d somewhere in the title/description. This is useless to me

[@SilverwingVFX]

Hey and thank you very much. You are absolutely right. Sorry for the inconvenience!