Green Screen

"B2B Video Production" Chroma key technique is usded for compositing two images together in which background can be made transparent.  The "Green screen" and or a "blue screen" is commonly used in the b2bvideoproduction studio with a large blue or green background.  Mostly bluescreen will be used if the subject is green, as an example plants.

The person must not wear clothing similar in color to the chroma key color such as blue or green clothes, (and depending on which chroma key is being used) otherwice his or her clothes will become replaced with the background video. 

In post-production, a computer can use the references to adjust the position of the background, making it match the movement of the foreground perfectly. This process is commonly known as keying and works by allocating more pixels to the green channel.

The biggest challenge when setting up a bluescreen or greenscreen is even lighting evenly lit and to avoide a shadow, as it would present itself as a darker color to the camera.