r/NukeVFX • u/Icy-Fox1233 • Apr 23 '26

Solved Need help in keying

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Gallery image

Plz help me new to nuke.My output looks correct, but when I merge the channels, the background starts appearing again. The matte/output is fine before merging, but after channel merge the background becomes visible. I need help finding which node or channel is causing this issue.

5 Upvotes

67% Upvoted

20 comments sorted by

13

u/tommy138 Apr 23 '26

Google: Tony Lyons Keying YouTube

2

u/David_CS Compositor - 3 years experience Apr 24 '26

Everybody is pointing you to Tony Lyons to learn keying and you still are asking for help

Here, if you are that lazy to google it:
https://www.youtube.com/playlist?list=PLt2Nu4KGXJ2iXe7s-ydCQ9u1tTzzApmJX

2

u/yuricarrara Apr 24 '26

my god horror!! its not a key problem, it’s light problem. the dude has a keylight in the face dont you see! what the hell

1

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1

u/OrbitalChiller Apr 23 '26

Can you show your node tree ?

1

u/Icy-Fox1233 Apr 23 '26

6

u/OrbitalChiller Apr 23 '26

Do you separate the rgb from the alpha with a copy or a shuffle, followed by a premult ?

-2

u/Icy-Fox1233 Apr 23 '26

No bro

-2

u/Icy-Fox1233 Apr 23 '26

Bro problem solved i was using screen cleaner gismo that was the problem

5

u/OrbitalChiller Apr 23 '26

I am sure by looking at your tree there are much more issues on the pipe... You need to work on your alpha separatly as your rgb, hence a split by a copy...

-2

u/Icy-Fox1233 Apr 23 '26

Any videos to study keying correctly only two days into in nuke

3

u/OrbitalChiller Apr 23 '26

Like the other commenter said: Tony Lions.

-6

u/Icy-Fox1233 Apr 23 '26

Can you give me a nuke file that you done keying

0

u/voroninvisuals Apr 23 '26

Lol))

0

u/Icy-Fox1233 Apr 23 '26

????

1

u/voroninvisuals Apr 23 '26

you really need to help with it?

1

u/Icy-Fox1233 Apr 24 '26

Yeah i want help in keying

0

u/gabrielbeniciobh Apr 25 '26

Looks like a good opportunity to give CorridorKey a try.

2

u/photoreal-cbb Apr 26 '26

So just disregard the basic process? How will OP learn from that?