Join Ashley Kennedy for an in-depth discussion in this video Introduction to advanced compositing effects, part of Editing with Composites and Effects in Avid Media Composer.
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Once you've mastered some of the more simple compositing effects, you may want to notch it up a few levels to gain more control and more customizability out of your layering capabilities. In this movie, we'll take a brief look at the various advanced effects that we'll be learning throughout this course. Okay, so in the last movie, we took a look at the Superimpose, the picture-in-picture, and the 3D Warp. And we were able to keyframe it and animate it over time. And there were several parameters we could change, but there was very little in the way of compositing that we had much control over.
We're going to take a look at this Earth shot. And this time instead of simply superimposing it on top of the stars, we're going to draw an AniMatte shape around it. So this is more of a sit back and watch movie. I'm just going to demonstrate these various techniques so you can see how they work and we'll go into much more detail later. So I'm going to open up my Key category, and my AniMatte effect. I'm going to just drag it right onto the Earth shot. And you can see that it doesn't do anything.
I need to open my Effect Editor to manipulate the parameters. And I'm just going to draw a shape around the Earth, and watch carefully. Okay, so we are now seeing right to the background. We're defining with a shape, exactly what we're seeing. So this right now is as big as the Earth. If I wanted to make the shape any other size, that would be what I saw. So we're going to learn how to obviously keyframe this over time as well.
And we'll be nesting effects inside of it. And lots of other fun stuff. But just to show you the very, very basics, this is an AniMatte. We're drawing a shape around an image on a video layer above another video layer. And let's move to this one. We have an actor in front of a green screen. And where we defined layer with shape, in this one, we're going to do so with color, in this one. So we're going to stay in the Key category, but this time we're going to apply a SpectraMatte effect.
And I'm going to just drag this right onto the clip, going to open the Effect Editor, and again, don't try to do, just watch for now. I'm just going to sample the color. And you can see now that we can see the background here. I'm just going to manipulate just a couple of parameters. So that we can get a nice clean key. And we've still got some green on him, so I'm just going to do some very quick color correction.
And it looks pretty good. So now, we have defined the matte by color. So we've done it by shape, and we've done it by color. I want to come down here. I haven't edited this in yet, because I want to talk about what an alpha channel is. An alpha channel is basically just a transparent layer, that once we import it into Media Composer, it's going to allow us to define the layer. So I'm going to hide Media Composer for just a moment, and I'm just going to show you what we're going to look at outside of Media Composer.
This looks like the same Saturn that we saw in the last movie, but you'll notice that we don't have a background. So everything around Saturn is actually a transparent layer. So when we bring it into Media Composer we'll be able to see through it to the video layer underneath. Let's open up Media Composer again, and I've actually already imported it. There are some special import rules that we'll go through in a future movie, but I just want to show you. Here it is. It looks like a black background, but when we edit it into the sequence, you can see that we have the ability to see through to the bottom video layer.
So these are the three compositing effects that we're going to explore in great detail. We've got the AniMatte effect where we define our layers by shape. We've got the SpectraMatte effect where we define our layers by color, and we've got the matte key where we define our layers through alpha channels. So as you can see, there are a lot of ways you can define exactly how you combine, section off, and blend layers of video together to form a cohesive whole.
- Introducing compositing
- Pulling chroma keys with SpectraMatte
- Animating a chroma key
- Working with luma keys using the 3D Luma Keyer
- Masking out part of an image with the AniMatte effect
- Using AniMatte effects as transitions
- Using alpha channels in keys
- Creating a title sequence using a layered Photoshop file
- Changing the color or characteristics of an area inside the video frame using the Paint effect
- Writing words with the Brush tool
- Cloning and tracking objects
- Removing scratches and artifacts