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:
10 years ago
RECENT POSTS
New Tutorial: Advanced Electric FX! 100% AE
In this 3-in-1 Tutorial we get the high-voltage action! This massive 56 min tutorial has so many tips and tricks you are sure to learn something new! Techniques: Direction Lightning Movement Dynamic Reflections with realistic falloff Sub Surface Illuminated Clouds Interactive Lightning bolts Nice Soft Glow recipe No extra Plug-ins needed! 100% After Effects! Project files […]
Where are the Tutorials! + NAB 2017!
Yo Andrew! Where are all the Tutorials!?! A reasonable question actually. I don’t have a simple answer but maybe I can share a bit of my process with you. This year I’ve been working on a bunch of amazing content for Video Copilot! My goal was to dig deep into default plug-ins and try to […]
I'm Sorry Shape Layers! I love you!
I must confess… I was never a big fan of shape layers…  we just didn’t get along.  I was used to using masks but suddenly (around AE CS3) the same mask tool began creating Red vector shapes. At first, they seemed cool enough but after accidentally adding shape layers to my comps, instead of masks, I lashed […]
Visualization Experiment and new Renders
Just playing around with a new After Effects experiment without using any 3rd Party plug-ins! I need to refine some parts of the effect but I really want to make a tutorial for it ASAP! Here are some other projects you may have missed! Using Element 3D bump mapping to create some Gold coins and […]
PLUG-INS