Chroma Key or Green
Screen technique is used by Videographers and Filmmakers to superimpose one
image on top of another in a layering fashion.
Chroma is the colorfulness
relative to the brightness
of a similarly illuminated area that appears to be white or highly
transmitting. One colour, usually green is digitally removed in the layer in the
editing process.
It is a great skill to
have as a videographer or filmmaker.
How do they do that:
Clip
1
The object or person
that is to be seen in a totally different clip is filmed standing in front of a
green background. Any colour really can be used, but generally green is the
industry norm. The green colour will then in the editing process be removed to
reveal the background of the main clip.
Clip
2
This is the background
or the main clip in which the added object or person will appear.
Here is an example.
The person (object) is filmed standing in front of a green background, which
will then be removed to reveal the background in clip 2.
 |
| Green Screen Process |
You need an editing
program that can do the “keying” process to be able to use this technique. Both
Adobe Premier and Final Cut incorporate the keying function.
Most Editing programs can do it.
- Adobe Premier
- Final Cut
- Filmora
- Windows Movie Maker
This technique is a
great way to enhance your videos.
Here is an example of an object falling onto the Champs-'Elysees in Paris
Here is an example of an object falling onto the Champs-'Elysees in Paris
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