Fixing noise after using Keylight on subject?

[rickyj89135955]

I have tried to use keylight on a subject before with no green bouncing on them and they always have this weird noise on their solid color non-green clothes.  Is there a way to fix this with another plug in?

[Mylenium]

Without any info or screenshots of your footage and settings this is difficult to tell, but feel free to experiment with the Remove Grain effect. Though, to be honest, it is more likely that you need to change procedures. Your footage may be shot the wrong way or you have overcranked your settings.

Mylenium

[Roei Tzoref]

This is probably due to Keylight's notoriously aggresive spill supressing. Try this: use "intermediate result" instead of "final result" and for the spill use Ae's "advanced spill supressor". If that doesn't cut it, I recommend NeatVideo noise removal plugin

[brian704]

You can also use Keylight to create the matte and then use a copy of the footage without keylight as the "fill". Then you can color correct that layer and do anything else without the added noise

[Roei Tzoref]

I think it's the same thing as choosing intermediate result and without the hassle of additional layers. you're basically telling Keylight not to deal with color correction.

[erics62359021]

i cant believe it was this easy! thank you so much this REALLY saved my ass

[brandonf57822300]

This fixed exactly what I was having a problem with, thank you.

[mh30394877]

This saved me, thank you!

[Lokister]

drastic improvement with your method, thank you

[Stephanie367705104sz9]

Thank you so much for this amazing tip!

[Jose Panadero]

Under Keylight > Screen Matte category you have a setting called Replace method. When you get a noisy result, is it better to change this parameter to Source. Also you can contrast your matte to get better result in the same category using the Clip Black and Clup White parameters. Maybe it is not perfect but a better start point to clean the matte

[KevinTheDane]

This is the answer I was looking for. Fixed the grain.
Setting to Intermediate result also fixes this, but then I cant use the Edge Colour Correction feature.
Thanks Jose 🙂

[defaultej6gpiqnywms]

You saved my life Jose, thank you, this solved my issue.

[soapvegas]

This is the definite answer I was looking for, thank you so much! In my current workflow I'm mastering for the highly compressed WebM. During workflow testing we found that many other workflows and settings lead to terrible artifacts in WebM (also the entire ordeal with premultiplying / unpremultiplying was eye-opening). Other options discussed in this thread could work for other compositing workflows, but didn't integrate into ours or had limitations.

Setting it to "hard color" absolutely fixed it for us. Any final color corrections for contrast can be easily done after precomposing.

Thank you Jose, your advice just gave us the last bit of information we needed to lock in our post workflow!

[brian704]

Not quite - with the extra layer you have the ability to process the layer after the key - without effecting the matte

[brian704]

Also - since you can rarely pull a proper key with a single instance of keylight, you can add your mattes together and have a single layer as your fill.

[Roei Tzoref]

I see what you mean. still you can add mattes with intermediate result. one layer with keylight for core matte, another layer with keylight in the layer stack below for soft edges. mulltipass keying works with this technique too. the alpha or luma matte technique is valid of course, just different approach. here's an excellent course on keying by vfx guru Mark Christiansen. advanced stuff, he shows techniques for also multipass keying (no alpha or luma matte necessary)

[brian704]

Yes - Mark's stuff is great!

[rickyj89135955]

I followed the tutorial from Surfaced Studios and he does a great job explaining how to do things step by step, but it's little stuff other than noise the edges will sometimes get really jagged and I'm at a of of how to fix simple stuff like that.  I'm not making Avengers here, but geez it should be able to look a lot better than what I am getting.

[brian704]

Some of that will depend on how you shot the footage - if it is 4:1:1 you don't have much chance of pulling a good key. Little things like pre-blur on the matte and using a separate edge and core key should help a lot.

[Roei Tzoref]

can you show us the video? and the result?

[Kevin-Monahan]

Still need help with this RickyJ? Let us know, please.

Thanks,
Kevin

[Volkan Dalyan]

Hi, you could also try PremierPro "Ultra Key" instead of AE "Keylight". It worked well for me. It's noise free also faster than Keylight. Just set it to "Aggressive".