Green Screen/lighting keyout trouble .
by Andonis Bakopoulos on Oct 23, 2013 at 3:22:26 pm
Hi Guys ,
I need some help urgently i am a 6 months user of AE show forgive me if i sound pretty amateur.
I am working on a project which is 70% shot in green screen the problem i am facing is that due to incorrect i assume lighting setup i have the character's hair (blonde) reflecting the green screen . so when i use keylight to key out the character from the green screen i loose all these detail from his hair and skin wich reflects the green back on.
Its pretty serious since the 70% percent of this project is been shot using the green screen with the main character reflecting the green back on his skin and hair.
I am pretty desperate i can't find a way that seems to work. I tried roto brush but there is so much movement and its a 4 mins music video it doesn't come out good and will take me a year to roto brush it perfectly .
Re: Green Screen/lighting keyout trouble . by Dave LaRonde on Oct 24, 2013 at 2:07:02 am
[Andonis Bakopoulos]"in regards to ** Show us one of those problem frames** you mean to upload a capture screen ?"
Yes. If the green background is too bright, it can be very difficult to get a good key. It's difficult to tell you what to do because we don't know the lighting problems you face. a screen capture will help us.
[Andonis Bakopoulos]" i am not using AE for long time ."
Then do not try to use the keying effects in After Effects without knowing what they do. There are Keylight tutorials here on the Creative Cow that can help. You can also download the Keylight tutorials and user manual from The Foundry, the company that makes Keylight.
KGAN (CBS) & KFXA (Fox) Cedar Rapids, IA
Re: Green Screen/lighting keyout trouble . by Andonis Bakopoulos on Oct 24, 2013 at 3:05:40 am Last Edited By Andonis Bakopoulos on Dec 25, 2014 at 5:46:31 pm
Thank you so much for the information .
I ve watched lots of tutorials before i used the keylight and have successfully key out plenty footage that ive used for the little time i am using AE. This one just looks more highly complicated keying out since i have the green light bouncing back at his face an hair. Any guidance how to follow this particular issue would be very appreciated.
Here is the screen capture i used despill bias and took some green from his hair and thats the best i could get i didnt go further to edge thin hair etc i know there tutorials about it, just right know i need to get the skin and hair right.
Re: Green Screen/lighting keyout trouble . by Dave LaRonde on Oct 30, 2013 at 12:13:59 am
If this doesn't work, someone else will have to come up with an idea:
Put the problem shot in a comp and duplicate it.
Add the Keylight effect to the top layer. Get a good key using the information in the status viewer.
Go to the lower layer, and use the top layer as an alpha matte.
Add Keylight to the lower layer, and adjust it to get rid of the green spill.
If this is your first time using green screens, you should know that these things are NOT automatic. They need careful lighting and shooting on the best footage available. Some times it takes many layers to key various portions of the shot individually.
KGAN (CBS) & KFXA (Fox) Cedar Rapids, IA
Re: Green Screen/lighting keyout trouble . by Daniel Broadway on Oct 30, 2013 at 3:07:21 am Last Edited By Daniel Broadway on Dec 25, 2014 at 5:24:10 pm
Andonis, as Steve Brame suggested, Spill Slayer is probably your last hope to rescue this shot. Spill Slayer's algorithms are better than the ones used currently in After Effects for handling spill (reflected green light), and it has more options to deal with colorizing the spill after the fact. Go to this website and try the demo on your footage...
I quickly threw Spill Slayer on your JPG preview, and it definitely gets rid of the green cast, but I would need a better quality frame grab than this small JPEG to really tell if it's going to do what you need.
Re: Green Screen/lighting keyout trouble . by Andonis Bakopoulos on Oct 30, 2013 at 1:36:01 pm Last Edited By Andonis Bakopoulos on Dec 25, 2014 at 5:46:09 pm
Thank you so much Daniel and all of you guys and Dave for his feedback , I really appreciate your help and as Steve suggested Spill Slayer looks very promising and might be the best case scenario since the 70% is shot on the same Camera and lighting setup but I am back on my desk in 1 hour and get to try Spill Slayer . I am uploading a better quality of the problem frame . Daniel thank you for being generous enough to have a look at your self and tell me if Spill Slayer is really is going to save me. If i can get this shot right the rest will be a piece of cake because this is the closet shot in the problem and unfortunately the only close up of the artist!!!
Re: Green Screen/lighting keyout trouble . by Daniel Broadway on Oct 30, 2013 at 4:35:28 pm Last Edited By Daniel Broadway on Dec 25, 2014 at 5:23:28 pm
Andonis, I threw together a quick and dirty composite to test Spill Slayer on your footage. It does the best job possible I think, considering how much spill is everywhere. Better than Keylight's suppression for sure. Keylight is too aggressive with not a lot of controls. If you install the trial of Spill Slayer, this After Effect project will show you.
Notice I adjusted the Screen Balance under Keylight from 50 to 100 to get more detail out of the key. I also made Keylight show "Intermediate Result" instead of "Final Result" to keep Keylight from suppressing spill. Here is the After Effects project...
Re: Green Screen/lighting keyout trouble . by Andonis Bakopoulos on Oct 30, 2013 at 8:25:06 pm
Thank you so much for the presets Daniel, It Looks that it will work and if i combine it with Dave's method i believe i will have a good result. Will come back to you guys and let you know how did that go..
Re: Green Screen/lighting keyout trouble . by Andonis Bakopoulos on Nov 2, 2013 at 8:31:33 pm Last Edited By Andonis Bakopoulos on Dec 25, 2014 at 5:47:19 pm
And all of you guys thank you so much much for the help.Spill Slayer actually did a good work!!! And saved me from so much time thanks to your suggestion i got an OK Key from the horribly over lit close up.
Daniel thank you for the preset you really saved me long time , i just enabled back the *color replace on the Spill Slayer and did some adjustment in the color balance just to get back the gold look at his hair back cause it looked kind of dumbed and unrealistic. Just a lil bit and warmed up the skin tone as well so he don't look as pale. I can use that as the raw and take it from there.. with more adjustment and filters so i can get to a more natural and warm skin tone. His beard bit red-ish but will work with masks separately. (?)
Thank you so much for your support and your accountability guys. Its great to be among people who cares about everybody to get to be winners!!
Re: Green Screen/lighting keyout trouble . by Andonis Bakopoulos on Nov 11, 2013 at 5:57:43 pm
Thank you for asking and your generosity. I been away in Long Island for a very intense 5 days workshop and just came back in the city, I am getting back to work on it today. Its coming up very beautiful but there is still a long way, I wouldn't do it without your support i really respect that . Thank you for your msg are you currently working on something now?
Re: Green Screen/lighting keyout trouble . by Andonis Bakopoulos on Dec 21, 2013 at 10:07:05 pm
Dear Daniel ,
Here i am facing another challenging keying out due to the horrible lighting and as you can see on the frame shadows on the background make it even harder to get a descent key out of the silhouette and silhouette need to look perfect right now i am loosing details in his hair when i use keying out with spill slayer. i haven't get a good result yet does anyone have light on that ?
Re: Green Screen/lighting keyout trouble . by Daniel Broadway on Dec 21, 2013 at 11:18:04 pm
Andonis, since we are not seeing a lot of detail, and it's mostly black, you can get away with using an Extract keyer on this shot. Below is a link to a mock up After effects file. You might want to combine what I did with Steve's suggestion of tight garbage mattes to block out the stuff from the edge of frame. Have a look...
Re: Green Screen/lighting keyout trouble . by Andonis Bakopoulos on Dec 22, 2013 at 10:56:02 pm
Daniel Got it worked!!
Thank you so much . i used your preset the only difference was that i used primatte keyer instead of extract method, cause i got slightly a better key out and adjust the levels a bit , i dint use super tight junk matte cause in this case didnt really work for me instead i masked it manually and father it a bit to get rid the junk close to him , so in in result i got some for fine details at his hair which is exactly what i want it!!
Thank you so much once again for helping out ,i really hope moving forward ill be able to be in support to you at some point