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Multi Part – In a production environment, compositors often have to key greenscreen footage that was shot in less than ideal conditions. Things like shadows, motion blur, long hair, and green spill can make keying very challenging.
In this series of lessons, we will go over how to effectively deal with all of these problems using some advanced techniques in After Effects. We will start off by evaluating the footage and planning how to tackle the shot.
We’ll go on to separate our key into multiple parts: making edge mattes a core matte and fixing problem areas with holdout mattes. We will then use a powerful technique to fix edges, color-correct the character to fit into the scene, and create a light wrap from scratch.
Then, as a final touch, we’ll add a magic blast effect. After you have completed watching this tutorial, you will have a set of tools in your back pocket that will help you to get great-looking keys from even the most difficult greenscreens. Software required: After Effects CC 2014
We will begin the tutorial by importing our footage into After Effects and analyzing the job ahead of us. Then we will create garbage masks to break apart our person into manageable pieces. We will then add Keylight effects to our layers to create an initial key. After that, we will analyze the best way to remove noise on each layer. Then we will fill in our alpha by creating a core matte. Finally we will focus on the hair and all the detailed roto and keying work involved. We will complete the project by doing some heavy-duty rotoscoping work on the bottle.
Nothing says visual fx like a greenscreen. The image of a film set covered with blue or green fabric has become synonymous with visual effects. Keying has become such an important part of video production that it’s easy to underestimate how much there is to learn about the process, and it’s easy to overestimate how easy it is.
More: course-vip[FXGear] – Multi Part Greenscreen Keying in After Effects CC 2014