Chroma Key- A Brief Explanation

This post is about Chroma Key



What is Chroma Key?
Chroma Key is a Special Effect for Compositing (Layering) two images or Videos streams together based on color hues (Chroma Range). This technique is usually used for Film Making. A reflective Green or Blue background is used. 

A Girl Standing against a Green Screen

After Processing

In Movies are Sci-Fi Themed, Fantasy Themed, etc. These scenes are not Original but looks realistic.

Many Software's provide features of Chroma Key but not all does perfectly, meaning some software's does but it not looks realistic. Only few Costly Software's does this realistically. Examples of these software's that I used is:

         Name Of Software:                                                           Rating By Me:

(a) VSDC Free Video Editor                                  5/10   "Not have much Features"

(b) Video Pad Editor                                               6/10    "Have Some Features"

(c) Adobe After Effects CS4                                 10/10   " Have Dozens of Features and Settings

                                                                                               for Film-Making Purpose"

Ideal for Film Making is Adobe After Effects CS4 (or Higher) but its very costly.Visit Wikipedia (Adobe After Effects)

For Better Results in  Green Screen Proper lightning. Also If shooting in Green Screen Always try to eliminate Shadows From the Backdrop. If Backdrop is Green Subject must not wear any Green Apparel.

Also Wearing Glasses and remove any glass material because remains of Green Screen may not be perfectly Eliminated also, Subject should be at least 8 inches away form backdrop for Better Results