Set Extension Setups

In the Set Extensions tutorial we learned a technique to add CG elements on top of a live action shot. But there are other effective ways to do this, include masking out parts and even using a green screen in the field.


In the above example, luminance keying and some masks were used to remove the sky and replace it with a destroyed city. Since our characters do not extend over the separating wall it is easy to remove the sky by masking the wall off and replacing it with our set extension.

This is a fake setup to demonstrate another possible way to remove the background. Obviously this would be even easier to remove than the white sky green keyer. Especially since it is pure green from the paint bucket in Photoshop. Of course in real life you want to add some track points as well so you can track the camera movement and I don’t mean in Photoshop.


In this example a fake green screen is painted on to demonstrate how using a small green screen in front of your actors will allow you to extend the background directly in front of your characters while maintaining the original dirt ground which makes your charcters look like they are really there. Once the green is removed a background plate of the original dirt lot can be placed back into the scene, then by using a subtraction mask and some feathering, you can blend the real foreground dirt with the background plate of the matte painting. Just be careful not to fade the mask beyond the end of the green screen or you will get a sharp edge where the green screen ends.

Another idea would be to park a static object like a car in front of the actors with a green screen behind it. Then you can key out the green and use a garbage matte to cut the rest of the scene out, and this way you wouldn’t have to blend the original footage with the background matte painting because the car would serve as a separator.

You can also extend the set with a camera movement and place some large building in the BG and simply pan upwards to the top of it… or even… Okay, that is enough for now.

POSTED:
7 years ago
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66 Comments

Great ideas for set extension!
5 years ago
Hi...
That is a nice post indeed. I liked your way of presenting the ideas. Good job. Keep it up!
seagate
6 years ago
i luv u full ... andrew

regrads
sigit kurniawan
Sandy
7 years ago
Very Useful.....thankyou

Best Regards
Sandy
7 years ago
The possibilities are endless with this! Thanks yet again!!
jake
7 years ago
sam loya looks like emeril
7 years ago
when we where shooting dirty sexy money at ABC studios they used a green screen in the afternoon outside it was sunny.later on at ten night we were shooting a scene and they shot it against a huge blue screen SO LIKE SOME GUY @ cuase i was in the shot aganst the blue screen and i was wearing jeans.
Some Guy
7 years ago
@Kris S: You usually use greenscreen for exterior shots and bluescreen for interior. It's because of the color temperature
( http://en.wikipedia.org/wiki/Color_temperature ).
If you shoot outside you have a high color temperature which causes a bluish tinge, so it's harder to make a good key with a bluescreen.
If you shoot inside you have a low color temperature and a yellowish/greenish tinge, which makes it harder to key out the greenscreen.
And of course there are reasons to use greenscreen or bluescreen inside AND outside. For example the style or the DV compression or you want your actor to wear blue jeans inside...
7 years ago
ty drobins
7 years ago
It just depends on the shot I guess, for exterior shots it's most common to use a green screen I think..
Kris S
7 years ago
green screen or blue screen ? any significant difference or advantage in using green vs blue screen?
Marco
7 years ago
Nice to see that some of my tutorial suggestions made the cut! This is pretty bad ass.

I was wondering, because Mini DV footage uses compression, how difficult is it to eliminate most of the green spill. How does it compare to keying footage that was shot with HDV (which also uses compression)?
7 years ago
omg hahaha :D
7 years ago
alright no more explaining please . the whole thing is just to show people where to replace the green screen haa .ok.
bwoogie
7 years ago
"In this example a fake green screen is painted on to demonstrate how using a small green screen in front of your actors will allow you to extend the background directly in front of your characters while maintaining the original dirt ground which makes your charcters look like they are really there"

He painted on the green just to show you where a real green screen would go.
7 years ago
now i got confused too .i dont know but on a scene like this thats requaires a huge green screen unless you doing a realy prof set.thats alot of work .
7 years ago
@clancy30

I'm so confused lol... AK was just putting in the fake greenscreen to show you where the real greenscreen would go. Putting in a fake greenscreen using AE and PS would be pointless... is that what you were trying to do?
7 years ago
Hello really nice andrew. finnally we're getting something usefull hehe ;)

Anyways i worked on a commercial a few weeks ago, and i used the same techniques as in th set extension tutorial

www.two-penguins.com/workvask.htm

There were made alot of rotoscoping on the guy aswell as matte painting..

Enjoy! ;)
7 years ago
otherwise you have to read the notes man before you try to make a comment ,read whats under the possible setup A .when you try to sound smart you sound !.peace and love.
7 years ago
i work with green screen i know that .but the pics andrew posted the two guys standing infront of a green screen i dont think that was a set .it looked like he added that green in the software .

@bader ahmad -min ween ya sahbi?that site was great.
otherwize
7 years ago
@ clancy30
maan haha, GREENSCREEN is not added by software, its added on shooting. You shoot your actors on a green screen and then remove it. Not add it.

I support benandaim's question and demand an answer! lol just joking. But i still would be thankful for an answer.
7 years ago
Thanks AK the added blogging on this one has made it much more practical i think. Thanks again!
Bader Ahmed
7 years ago
Thats Great !

Do not forget to check out this wen site Fore Dylan Cole >>>>>

http://www.dylancolestudio.com/index2.html

More Inspirations for Matte Painting

Happy Matte Painting for all

thanks The Great Andrew ever !!!
benandaim
7 years ago
Hey Andrew,

Love your work...who doesn't?

I got a question about motion tracking. When you do yours it works seemlessly, however when i track then link my object seems to jitter around a little bit. How do you know the best points in your footage to track? And any other tips on tracking would be great! Thanks in Advance.
7 years ago
are you making a tut on this ,man thats what iam talking about how to add the green screen in AE or PS it doesn't matter but thats what i need to do my shots cuse my actors is going to be in russia. good thinking andrew.
7 years ago
here you go guys, my first attempt at this effect. please veiw and leave some feedback :) thanks alot from elliott

http://www.youtube.com/watch?v=tBiAWeeSmys
7 years ago
It's great to get tips like that, doesn't have to be video tutorial always, this works perfectly fine for small "tutorials" like this. Thanks!

MM.
bwoogie
7 years ago
uh-oh! Now he is using bad grammar! "That is how who spell..."

Just messin' with ya! Anyways, I just bought the Riot and SFX bundle the other day, and downloaded the SFX while I'm waiting for it to arrive in the mail (I love that btw, dl and ship it) Excellent stuff right there!

Keep up the great work!
Any news on the baby?
drobins
7 years ago
Judd, see tutorial number 35 Jumpy Text. Andrew explains how to wiggle the x-y and z axis seperately.
7 years ago
is there an expression to create a wiggle effect only on the X-axis?

...I know, off topic. Sorry.
Micklevietch
7 years ago
Thanks you Sean Emer !!
drobins
7 years ago
The tutorials make up for any typos! I've made my share of typos. Actually I like to Capitalize letters for no ReaSon just to drive my boss nUts.
7 years ago
That is how who spell composite when it is late. Now, I could fix it but... oh well.
7 years ago
figures.... I right when I see there's a new tut lightning starts pounding down outside.... off goes the pc! looks good though!
Frank
7 years ago
Well, i was trying to be funny i guess.
Todd
7 years ago
hey Andrew .... just wanted to say i love your tutorials... anyways i am looking into buying a new hd cam... i was thinking sony... now with there (HD):AVCHD (SD Logical): MPEG2-PS file format i was wondering does cs3 premiere, after effects accept theses formats.... would really apperciate some input... thanks
drobins
7 years ago
Trevor that's ok....Andrew spelled "Composite" as Compositie on the first image up top :)

Unless compositie is his pet name for composites......

then everything is A-OK.
Trevor
7 years ago
Wow, it's totally pointless to make this comment, but I realized that I spelled "roll" as "role" in my previous comment. How embarrassing! But you still rok Andrew.

See what I did there? I mispelled something again. Cuz, with the....ah, I'll leave the comedy to AK.
7 years ago
Very cool frank, though the demon face on the mother doesn't look very scary lol
Frank
7 years ago
A tribute to king Kramer the first.

Here's a project i made using some old footage and incorporating the wise teachings of Mr. AK! About 5 tutorials helped me on this one, and i used VideoCopilot'S Designer sound effects (best product ever!) for the soundtrack.

This site rocks, can't say that enough!

youtube.com/dubuc4

Comments welcome! Thanx AK
Orc Master
7 years ago
Awesome tips! That's definately gonna help me in the future!

I would like to ask something, though... Is there any way to make the perspective look more like 3D? Maybe with a broken down matte turned into 3D layers?...

IDK, just a thought, for I don't think the effect looks bad but I think it could be taken to the next level ;)
7 years ago
AK please make a tutorial with this green screen techniques, I am not a master in photoshop, make us a short tuto pleasE!!!!!!!!!!!!!!

Your customers
Karl
7 years ago
Thank you again ! :)

Next time , Sam behind the camera filming andrew !

For warp or other ugly stuff you can inflict to your friends , not some great good looking effect i mean!

Poor sam , been frozen , face dislocation , lost in 1860 ..
give him a break for god sake !
7 years ago
we're gonna have to change your name to "butter," because you're on a roll!
7 years ago
Micklevietch, in photoshop outline the two people using the polygon lasso tool or the pen tool. Then you can cut them out and paste them onto a new layer, and then put a green box in between the top layer and the source layer.

Of course that was only an illusion though. In real life you would need to set the screen up on stands (to be digitally removed later, which isn't as hard as it sounds).

One key thing to remember when you are lighting your green screen though: Keep the actors as far AWAY from the screen as you can manage (20 feet is nice), and make sure that you light the greenscreen with diffuse, soft light (outside this shouldn't be too hard since the sun helps a lot, but make sure that you fill in any wrinkles or shadows with bounce cards). Also, giving your talent a good halo backlighting (think CSI) will help seperate them from the green screen even further, giving you a much better key.

Don't forget that actors and green screens receive two DIFFERENT lighting set ups. If the actors get too close to the green screen you are risking spill light and shadows, which can be a pain in post.

Of course not everyone likes to light their shots, and some don't have the lights lol. In that case, doing it outside would def help.
Micklevietch
7 years ago
How was the green box "screen" painted in front of the two guys? This may be a stupid question, but i don't use Photoshop alot!

Cheers,
Marc.B
7 years ago
Very intresting. Thanks for the tips
Dustin James
7 years ago
Thanks for the added tips..

I don't quite comprehend the car part... put the green screen to hide the car? or...?
Morten Enoksen
7 years ago
thanks man ^^
Gary
7 years ago
That's awesome, this is used in a lot of feature films. In eragon they did that a lot.
matiass
7 years ago
AK, Did you know something about Imagineers Systems MOCHA?
Is it Better than AE tracking tools?
Regards,
Matias.-
matiass
7 years ago
AK Did you heard About imagineer systems MOCHA?
Its better than AE tracking tools?
Thanks,
-[Cloud]-
7 years ago
oh dear, now you gettin' the taste of this, aren't ya?

really nice og getting this technique further and more professional.

i really apreciate ist.
thank you

-[Cloud]-
Conor
7 years ago
Those are some good tips Andrew. Another triumph!
7 years ago
Oh man, this latest tutorials is the sweetest imo! very nice work! and this is an great expansion on it!

Andrew! goddamd, you're good!
nico
7 years ago
thanks!
I'll try these techniques soon, looks great!
but unfortunately it's really hard to find pictures from different angles from the same 'set' on the internet... so you can only use one camera position for that set extension :(

I'm dutch and 15 years old by the way, so I hope you understand what
I'm trying to say....
Dgx
7 years ago
Thanks again love your work
Actually is there any "Andrew Kramer Fan Club" ? :):):)
I want to sign up :):):)
Some Guy
7 years ago
Thank you for that very helpful information. Especially for the "Setup B". I had some thoughts how to realize this sort of shots. The hint with a car in front of the actors is great.
7 years ago
Here is another "1rst try" with some before useless video I had. The comp on my computer is much better quality and the lighting looks far better than the encoding on youtube. Please comment, advise is always welcome!

http://www.youtube.com/watch?v=MjJ67_Hbcqs

-James Cawley
http://www.youtube.com/watch?v=MjJ67_Hbcqs
Ben
7 years ago
Wow That looks great!
Logan
7 years ago
Wow maybe you could make a video tutorial on that awesome
7 years ago
Fonzie, I got that same impression.
Fonzie
7 years ago
great tips. I foresee endless compositing possibilities with these methods. I need to go out and shoot a movie now.

By the way, the ruined city in the pics above reminds me of the movie Idiocracy.
Doug
7 years ago
wow... epic tutorial/blog
7 years ago
Nice to learn something about the shooting! In most of the chases I go out and shot what ever comes into my mind but most of that footage isn´t really helpful for the post. I need to learn to take some time for preparing and for those ideas you mentioned here. Thanks.
Fetch
Trevor
7 years ago
That was funny. You were getting on a role there, till you realized you were "tutorializing" in a blog!

That's my new word for the day....well, the rest of the night anyway. TUTORIALIZING!
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