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Green Screen Class

Matthew Charles Robinson

matthew robinson

on 23 November 2014

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Transcript of Green Screen Class

Lighting a Green Screen James Green Screen 03/13/2013 The green screen does require it's own lighting Key to lighting a green screen is consistency Diffusion filters are very handy when lighting green screens. Diffusion helps create more even lighting and reduce the impact of shadows. 1.The color and lighting of the green screen needs to be as even as possible.
2.You can't have anything in the foreground (i.e. part of the the subjects) which is the same color as the green screen. Using Green Screen Footage Once you have recorded your green screen footage you will obviously need to remove the green parts of the image and replace it with your own background How do you do this This is done through a process called chroma keying, which means selecting a color and removing every instance of that color in the image. Any image placed "behind" this image then becomes visible. There are two common ways to create a chroma key:
1.In real time, using a video switcher or special effects generator.
2.In post-production, using editing or composting software. Post Production We will assume that you are using the second method since this is by far the most common, especially for beginners.

Exactly how you do a chroma key will depend on the editing software you use but the general process used by most applications goes like this 1.Place the green screen footage on a layer in the timeline.
2.Place the footage or image to be used as the background on a layer below the green screen footage.
3.Add a green screen or chroma key effect to the top layer (the example shown is the effect supplied with Adobe Premiere).
4.Select green as the color to use in the key. Most software provides a color picker to help you do this.
5.After selecting the color, parts of the image will become transparent and you should see the background appear in these parts. Adjust various parameters to get the best effect. Post Production Steps Premier How to key green screen footage
using premier How to Green Screen Using
Final cut pro Green Screen Tips
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