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Chromakeying through window

greenscreen window chromakey

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#1 Karl Reynolds

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Posted 13 February 2014 - 07:10 PM

Hey guys,

 

this is my first post here, so i hope i'm in the right category;)

 

For a music video we're shooting a "kid's room". It isn't an actual kid's room, but we're designing the interior to look like it. The unfortunate thing is a BIG window. And behind this window is kind of a restaurant/lounge. We could move all the chairs and stuff, but you would see that there is just another room behind the window...

So i figured we put up a big greenscreen which i already own, and later add the exterior. Maybe the outside of the window might actually be a picture of the universe, i know it sounds cheesy, but the video is kinda weird for itself and it would fit the album cover. 

But anyways, here is a picture of the room i'm talking about. Do you think a well lit greenscreen would to the trick? I'm a little scared of having a green spill on the window frame etc. I'm using Keylight in After Effects for the post production and i'm fairly experienced with chromakeying in post.

ey8k8dwq.jpg

 

 

Fyi we will almost exclusively do still shots so there will be no need for camera tracking.

I hope i could be as clearly as possible!

 

Thanks!!

 

Best, Karl

 

EDIT: For the final video we have to shoot daytime and nightime scenes in this room!


Edited by Karl Reynolds, 13 February 2014 - 07:13 PM.

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#2 Stephen Williams

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Posted 14 February 2014 - 02:23 PM

Hey guys,

 

this is my first post here, so i hope i'm in the right category;)

 

For a music video we're shooting a "kid's room". It isn't an actual kid's room, but we're designing the interior to look like it. The unfortunate thing is a BIG window. And behind this window is kind of a restaurant/lounge. We could move all the chairs and stuff, but you would see that there is just another room behind the window...

So i figured we put up a big greenscreen which i already own, and later add the exterior. Maybe the outside of the window might actually be a picture of the universe, i know it sounds cheesy, but the video is kinda weird for itself and it would fit the album cover. 

But anyways, here is a picture of the room i'm talking about. Do you think a well lit greenscreen would to the trick? I'm a little scared of having a green spill on the window frame etc. I'm using Keylight in After Effects for the post production and i'm fairly experienced with chromakeying in post.

ey8k8dwq.jpg

 

 

Fyi we will almost exclusively do still shots so there will be no need for camera tracking.

I hope i could be as clearly as possible!

 

Thanks!!

 

Best, Karl

 

EDIT: For the final video we have to shoot daytime and nightime scenes in this room!

It's quite doable, you can even see it's through a window if thats what you want. 20 years ago with an optical printer we could lift waster & smoke from a blue screen. With all this new tech, people stat getting worried :D


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#3 Karl Reynolds

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Posted 14 February 2014 - 02:42 PM

hehe, yeah you're right. It's just that we only have this one try to pull it off. There's a kid involved, lots of people who travel to the location and of course a lot of organisation and schedules.

Do you guys have any tips that i should consider? The distance of the screen to the window, the lighting of the screen, when we're shooting night time scenes? that's what worries me the most. Shooting a night scene in the room with all the light outside the window lighting the screen...

 

Thank you guys!


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#4 Diego Torroija

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Posted 14 February 2014 - 03:19 PM

Hey Karl,

What I would do is to use green paper with green tape to mask the window from the inside to control reflections and tinfoil behind to control light coming through the window, then you need a good gaffer to light it evenly, ant to rig a source from light direction ad reflections and BG in AE.

Make sure the camera is locked, and minimize people standing tween the window and camera, no mater how clean the key is in my experience there is always some roto :)

 

Other option could be to use a large blue screen pulled back as far as I could from the outside to get a good natural light or HMIs  and to avoid spill coming in, Reflections and camera move where still something to consider.

 

Diegotorroija.com


Edited by Diego Torroija, 14 February 2014 - 03:23 PM.

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#5 Karl Reynolds

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Posted 14 February 2014 - 04:17 PM

Hey Diego,

 

thanks for the advice!

I'm not sure if i really get it. Wouldn't it be easier with the green on the outside to get the reflections right? In my experience Keylight in AE should be able to handle a screen behind glass, if im not wrong..

How would i get the reflections if i tape the green paper on the inside of the windows?

BTW I'm also gonna get some curtains to minimize the amount of the windows visible.

 

Thanks!


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