Avoid Color Headaches in Fusion! | Pre-Divide/Post-Mulitply Explained!

Avoid Color Headaches in Fusion! | Pre-Divide/Post-Mulitply Explained! - DaVinci Resolve

Рет қаралды 7,083

8 ай бұрын

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Avoid headaches with your color in Fusion using pre-divide/post-multiply!
In this video I'll explain exactly how pre-divide/post-multiply works and why you should be using it in Fusion.
Continue the discussion on our SubReddit: / caseyfarisgc
#GroundControl #DavinciResolve #DavinciResolve18

Пікірлер: 38

@ronshinall 8 ай бұрын

Yes to deep dive on alpha channels! Thank you.

@Chris7Lawrence 8 ай бұрын

Kudos to you Casey for just the effort you put into the story telling part of this to anchor in your message. Great job and super helpful.

@galacticgreg8261 8 ай бұрын

More stuff like this please. It had just the right amount of nerdiness to help those of us subs that have been with you for a while now.

@daveruble5150 8 ай бұрын

Neat. Plus intuitive. The sandwich metaphor! The stack! The Talent! Another award-winning presentation. You're a shoo-in for a Tubey Award. All my best, sir.

@AndreiPascu 8 ай бұрын

Another big W from Casey

@Tekkerue 8 ай бұрын

YES for super technical nerdy stuff! 🤓

@StrangeAustralian 8 ай бұрын

Your video came out for me at just the right time! I've been working on something with the TV node and had grain showing up in transparent spots when I didn't want it to. This fixed it right up. Thanks Casey!

@rickfarber4243 8 ай бұрын

Thanks for another terrific video. I'll show this to my students when they ask why we have to learn math.

@anatolykhramov7307 8 ай бұрын

Hmmm... A couple of days ago, I ran into this issue. I solved it by applying a mask to the merge layer, and I thought it would be good to figure out why it was happening. And here, Casey uploads a video on this topic. :) Thank you!

@OzoneVibe 8 ай бұрын

Another yes for the deep dive on alpha channels. 👍

@dougdina 4 ай бұрын

Yes, that is a puzzling concept EVEN AFTER reading the pages in the manual about this. Though, the manual doesn’t use a filthy coffee cup as an example. I’m glad you touched on the separate nodes Alpha Divide and Alpha Multiply as they are handy for multiple node operations. Sooo … nodes that do color correction do so on ALL pixels regardless of masks because they are RGB-dependent and not Alpha-dependent? I think that is correct. I believe the checkbox for Pre-divide/Post Multiple does a fancy operation: it divides out (removes alpha) before applying the correction, adds the correction, then adds the alpha values last. Either way, the coffee cup is still filthy.

@CaseyFaris 4 ай бұрын

Yup. You got it!

@ones_flow5652 8 ай бұрын

Really interesting! More, please. 🙂

@MPAflix 8 ай бұрын

Love this episode, more like this please!

@raccoonair 8 ай бұрын

Excellent explanation! I think most of us are looking for these kind of tutorials; thanks for sharing.

@Zdrxan 8 ай бұрын

Love your tutorials, I learn a lot from you. Please more alpha channel nerdiness

@mikefetherling 8 ай бұрын

Great explanation! Very helpful!

@LaMagnatron 8 ай бұрын

Definitely would love an alpha deep dive!

@coin777 8 ай бұрын

Can you make a video about why in fusion the colors in the video are so much different than in the other pages?

@stivosaurus 8 ай бұрын

I was noticing this the other day. I think it has something to do with the order in which the different pages are processed, with the Color page being done after the Fusion page. Or I could be confused. tl;dr: Video, YES!

@josefrogoschewsky6458 8 ай бұрын

This was very helpful. I would love tons more of this short tips videos for fusion. It’s such an amazing part of resolve - but can be frustrating to learn. You’ve helped immensely though.

@RomanHaussener 8 ай бұрын

Nice! Math with the very hungry caterpillar! 😄

@kidmd64 8 ай бұрын

Great video. More math please!

@KingZero69 8 ай бұрын

do a deep dive on color channels and why the alpha channel messes up the color corrector 💪

@RRS-CA 8 ай бұрын

Thank you, Casey! This is extremely helpful! I've struggled a lot with this while working in Fusion, especially in the 'Haunted' (and now in the 'Pumpkin') project. What other things can you teach us about the Alpha Channel, etc.?

@ADR69 8 ай бұрын

Its too early for me to grasp all these big words. Brb after coffee

@eie_for_you 8 ай бұрын

What about applying the same mask to the color corrector that we apply to the image?

@CaseyFaris 8 ай бұрын

That works too, although is maybe more hassle

@jeffnotti9932 8 ай бұрын

Yea that is an awesome idea.. thanks < J

@adeepoberoi1130 6 ай бұрын

Hi Casey. I am Going Crazy here , trying to render my DR fusion keyed (delta) project for a client. Quicktime DNxHR 12 bits keeps givine me weird renders (as in photo). So does Quiktime GoPro Cineform. I would really be great if you know the solution to this. I worked 2 days on this (should have done a test render in the beginning but never expected this). In DR everything looks fine but when rendered the keyed part is like half white and keeps moving.

@CaseyFaris 6 ай бұрын

Have u checked the matte in fusion? Is it totally b/w? Any grey noise will be partially transparent. Also make sure you select “export with alpha” on the deliver page.

@stivosaurus 8 ай бұрын

Can't we avoid all our color headaches by going to the RGB Mixer and clicking the Monochrome button?

@guitarguy7283 8 ай бұрын

PLEASE HELP! HOW CAN I RESTART AN ANIMATION IN FUSION? I MADE A SAMPLE AND I CANT GET RID OF THE ANIMATION.

@CaseyFaris 8 ай бұрын

You can double click any animated property to reset it. You can also delete any keyframes by clocking on the orange diamond.

@Bert_and_Sons 8 ай бұрын

Does anyone know why the Billy Rybka's YT channel does not continue?

@ArcanePath360 8 ай бұрын

Why would this not be enabled by default? It's like Black Magic want us to fail. Today I was trying to copy planar tracker transform node from one fusion clip to another (text clip above it). Nope. It just copies the node and not any of the transform data that it outputted. Really getting tired of having to sit through countless tutorials to just figure out something that should be basic

@rolandtorda5570 8 ай бұрын

Knowing these kinda concepts differentiate hobbie compositors from industry professionals. I don't think its nerd stuff rather a bare minimum if you wanna be a compositor.