Thanks for teaching in low speed my friend . Im new in this and i have learned so much. Many things that in other couse i cant .
@laszlopapp27742 жыл бұрын
Thank you for another great video. Learnt a lot. I can only speak for myself, but it is neither slow, nor fast. It is the right amount of progression for a beginner like myself. :)
@HugosDesk2 жыл бұрын
Thanks so much for your kind words of support
@ashleylanevirk22862 жыл бұрын
I now fully understand premulting. Thanks Hugo! :::) Just brushin-up on the basics again. Haha multiplication/ Gain- "Looks exactly the fargin same"!
@HugosDesk2 жыл бұрын
Glad I could help
@3dvfxprofessor2 жыл бұрын
Good stuff for my students. Thanks for your time and passion!
@HugosDesk2 жыл бұрын
Thanks so much for your support
@singhsaab91922 жыл бұрын
Yes great information video, as I'm doing despill and color correction done before copy node in B pipe source plate for live action ... it's same thing and result as you have
@HugosDesk2 жыл бұрын
Yes I do that as well! Please not this is not about the dispill! It was just to show premult rules so I was using dispill as a regular grading operation. Thanks so much for watching
@jean-baptisteguervin177810 ай бұрын
Thank you so much for your Tuto ! Its really clear and understandable ! And your english is very clear for my french understanding ^^
@ronydey26962 жыл бұрын
Always grateful and thankful 2 u sir..hi there myself Rony an VFX student from India
@SizSarayut Жыл бұрын
Love your videoes, I've been watching them! I'm FXTD and I have to render sometime, they help me a lot by knowing all these things from comp side so that I can understand what comp needs!
@HugosDesk Жыл бұрын
Thanks so much for watching
@traveljunkies3753 Жыл бұрын
so great, thanks for your work, it's easy to follow and I learn a lot as a complete newbie haha
@bikramjitroy61552 жыл бұрын
Thanks for sharing your knowledge! As a beginner, it's really helping me.
@HugosDesk2 жыл бұрын
You are welcome
@scarabrae2 жыл бұрын
Thanks for this - nicely explained.
@HugosDesk2 жыл бұрын
Thanks for watching
@SitinprettyProductions Жыл бұрын
Great tutorial. It definitely helped with my understanding of premult/unpremult but when I use ibk color/gizmo and get my key (I assume that the keyed footage is premultiplied since there's transparency), then grade the alpha (I know you say not to) to fix the key a bit *I assume when grading the alpha you don't need to use the unpremult/premult but please correct me if i'm wrong..., then I merge over my bg I still have gray around the subject's body / but the hair looks good. Is there something I am doing wrong? Any help is much appreciated.
@moifat81132 жыл бұрын
Hey Thank you for another great video, I'm talking about this CG premultiplied by default + without linear color space We can switch color space for CG to linear without make button premultiplied on (in read node) that rule deal just with cg or also PNG image,
@ong3r12 жыл бұрын
Not boring at all!!
@HugosDesk2 жыл бұрын
Thanks so much for saying that
@chiarinadp2 жыл бұрын
thanks for sharing 💓
@moaazhussen5 ай бұрын
Perfect ❤❤
@abcdsan2 жыл бұрын
Good initiatives to make this video, good info but you might miss to set black and white point in grade before setting any grading.
@HugosDesk2 жыл бұрын
Well this was just a intro to the nodes themselves, we did not do any proper colour correction between plates and we did not go over settings black and white point. I have that class on my online course but not on this stream! Can’t do everything on a short stream. Anyway thanks for watching
@HugosDesk2 жыл бұрын
Oh and btw some of the footage am using has been balanced already by the grading department so I did not wanted to change it but you are correct I should have been more clear about the white and black point. Live stream are hard and some stuff gets forgotten! That’s why I do pre recorded classes so they can cover everything and be correct
@abcdsan2 жыл бұрын
@@HugosDesk yes, you are right !! keep on rocking !!
@mryash3394 Жыл бұрын
Thanks sir❤️
@akhilshekar84272 жыл бұрын
Great tut
@HugosDesk2 жыл бұрын
Thanks so much
@AadiMourya-x6z6 ай бұрын
What if we keyout lady then no need to use alpha mask and premult
@artista3d2054 ай бұрын
I PUT A BACKGROUND IMAGE AND A CAR ,THN THE CAR IS LIKE TRANSPARENT ON THE BACKGROUND,HATS I DO TO SOLVE IT,I AM BEGINER IN NUKE.CAN YOU HELP ME?
@taunado2 жыл бұрын
Thumbs up
@qwame412 жыл бұрын
Thank you
@HugosDesk2 жыл бұрын
You are welcome
@rolandtorda55702 жыл бұрын
Hey Hugo, after unpremulting a prevously multiplyied image with an alpha mask I would expect getting back the whole image without "cutting" it out with the alpha. I must have missed something but I don't quite understand it. I'd really appreciate if you could help me out :) Thanks!
@laszlopapp27742 жыл бұрын
Before pre-multiplication, e.g. the background has 0.5 value. After pre-multiplication, it will become 0.0 as it will be cut off due to multiplying with 0.0 alpha. Now, if you un-premultiply, you cannot get 0.5 back in there because that information is not recoverable. Un-premultiplication is practically division. Division by zero is not mathematically supported if you know what I mean.
@rolandtorda55702 жыл бұрын
@@laszlopapp2774 Thanks:)
@varunlambo2 жыл бұрын
Sir I am working on a lot of footages where when there is a dark background.... it is difficult to get hair detail...... Keying a hair detail is not an issue.... but as soon as we premult it and Kill the spill.... it gives very visible grey edges on the hair...... then all we can do is edge detect and color the edges... which i find a bit wierd.... there must be a proper way to get rid of grey or green edges due to premult. pls help
@HugosDesk2 жыл бұрын
Am sorry you are having issues. It could be many things, have tried using luma keys? To maybe recover some of the detail back, also maybe the IBK?
@varunlambo2 жыл бұрын
@@HugosDesk Sir I am getting perfect hair details... But the issue is Premult.... Against a dark background. I am working in Bollywood Industry... I am searching for a proper way to blend the luminance created by Premult with the background. Against a day or a bright background there is no issue. I usually Key the footage then apply Premult to get the RGBA then use merge node to put it over background. I want to learn about a proper way where the luminance created by Premult can actually blend with dark backgrounds without losing hair details.
@varunlambo2 жыл бұрын
@@HugosDesk Sir, Pls help me .... all the tutorials on KZbin are taught on Bright backgrounds. I need luminance blending technique without losing hair details against a dark background.
@nuke_foundry_trick2 жыл бұрын
up !
@HugosDesk2 жыл бұрын
Hi
@animallabasg2 жыл бұрын
How to use the gizmos in nuke 13?
@HugosDesk2 жыл бұрын
Which ones?
@animallabasg2 жыл бұрын
@@HugosDesk like the one you are using for despil, most of he gizmos with python 2.7 are not working in Nuke 13, i cant find a way to convert the python 2.7 gizmos to python 3
@animallabasg2 жыл бұрын
@@HugosDesk like the one you are using for despil, most of he gizmos with python 2.7 are not working in Nuke 13, i cant find a way to convert the python 2.7 gizmos to python 3
@HugosDesk2 жыл бұрын
@@animallabasg Sorry, am still on Nuke 12 in production
@natemosemann76282 жыл бұрын
But where’s part 4? 😢
@HugosDesk2 жыл бұрын
Am resuming live streams in April. The plan is to do them once a month. Keep an eye on my social media for annocments
@toxicpurplesubstance6353Ай бұрын
I appreciate the lesson but I think your explanation of premultiplication is a little messy and you made a couple of small mistakes that makes it less comprehensible for beginners. For instance you say that using unpremult divides the alpha channel by the color but it's the opposite (color divided by the alpha). Also, when looking at the CG render you say that the gray areas of the alpha show that the render is already premultiplied, but that's not correct. You can't tell from looking at the alpha if the render is premultiplied or not; you need to look at the color channels (as you did in the previous example). Alpha stays untouched when multiplying/dividing. Still, thanks for the tutorials!
@gregorybennings8718Ай бұрын
I watched the whole video and didn't understand a thing lol.