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Now, if you've been following through the training, you may recognize some of this footage, and I'm just going to preface this video by explaining that if you go through all of the training, you will have all the tools to be able to create this. So this piece of footage, which is a girl dancing, if we go ahead and press play, this was originally green-screen footage, which we keyed in the Keying chapter. And then later I created this silhouette look in the pre-render video, which you'll see later in the training. But it's the perfect source to use the 3D replicator with, so I figured we'd go ahead and replicate this dancing person by using Replicate 3D.
I'm sure you may recognize the style, but rather than having it just stay over this one shape, we are going to use 3D replicators to really kind of push this. So with the video layer selected, let's go down to the toolbar in the lower-right section and create our replicator by just clicking the Create a Replicator button. Now, you'll see this grid. If we drag the corners out, we can scale this out so it's replicated over the size of the comp.
Now, if we go to the Inspector, under the Replicator, all we need to do is adjust the Scale down a little bit in order to have her appear multiple places. I don't want that many in this instance, but we can adjust exactly that as we turn this into a 3D replicator. If we look at our composition, you notice we have a 2D layer--see the icon here on the group layer. The quickest way to change this to 3D is to go up under Object and add a New Camera to the project.
This will allow us to click the Switch to 3D button, and that way the layer is now 3D that contains a replicator. But a replicator isn't 3D until we actually go in and enable 3D for the replicator in the Inspector. So select 3D, and we still need to go one step further. If you go up under Shape, click on the pulldown and now you notice we have an option for Box and Sphere. Let's change this to Box. What Box does is it creates a 3D box.
See, now I have an option for Columns, Rows, and Ranks. Ranks is code for Z space. Now, to accentuate how this is moving in Z space, I'm just going to orbit our camera here a little bit, and you'll notice now they actually exist in true 3D space. Now, things might look a little confusing because we have this background color solid and this layer is just kind of randomly floating in the scene. Notice how it's kind of flat underneath our 3D replicator.
Well, I want this color solid to always stay 2D in the background. So if you just click and drag down to the left, you'll get this plus button and when you let go, that just lets you know that you've moved the color to under group. And if you select that group, you can click on its 3D button and make it 2D again. Now all we need to do is just drag it to the bottom of our layer hierarchy, making sure to drag it to the left so it stays on its own layer.
Now as we orbit around with the camera, our color solid is going to stay in the background and we can really kind of push things with our 3D replicator. Since this is a video clip, we can adjust the playback in terms of whether it's random or offset. So let's adjust the Source Frame Offset by clicking and dragging. Here, let's adjust it to around 10. Now you'll notice if we play our scene that each different replicated object is moving at a different rate of speed, because there is an offset from the start piece of video.
We could randomize that further by randomizing this and choosing Random Start Frame. Now that's going to be extraordinarily random. Having the silhouette is kind of fun, but it's a little boring. What I want to do is actually have colors go all the way across the 3D replicator. In order to do that, we need to change our Color mode from Original to Over Pattern. I want this to change over the size of the pattern. Now, you notice I do have a color gradient and our silhouettes are still black.
Now, the problem with this, the way the color gradient is applied, it's blending with the black video and you're not able to see anything. So what we need to do is actually change our black source video to white. We don't need to turn on visibility for this layer. If we just select our source video file and then go to our Library, under Color Correction, under Filters > Color Correction, you want to choose Colorize. Just drag and drop that directly to our source video.
Now with that filter selected in the Inspector, remap black to white and click OK. Now, since we've changed our source video to actually be a white piece of video, when we select our replicator, no matter what we choose for the color range, the colors will be transmitted to each of the objects. So let's change the Color Gradient to something more like Dawn. Now, this is really kind of popping off the background. One thing that we can do to kind of blend things back is adjust the opacity.
We can adjust the opacity within the replicator itself or just adjust the original source opacity. I want to select the replicator itself. And if you scroll around to your color gradient, click on this little square up here in the upper left, this will allow you to adjust the opacity. So I can bring the opacity down a little bit, and now we can see the layers overlapping. I like the effect that this is creating, but I want to accentuate it. So in order to do that, you want to enable Additive Blend for the replicator.
Now I'm getting this kind of cool funky additive affect. So if I deselect our 3D replicator, I can go ahead and press play and you'll notice we have our animated video playing in the background, replicated over 3D space. I encourage you to continue tweaking this by keyframing some of the different parameters and really having fun with animating the camera and adjusting your keyframes.
So if we deselect our replicator and try and play things back, you may notice things have slowed down quite a bit. So when you're working with a replicator, you're really going to have to utilize Motion's different tools for optimizing real-time playback. So in an instance like this, I would start by enabling a RAM Preview, Command+R. After the RAM Preview loaded, I'd attempt to see exactly what I'm dealing with. Now, if something like that is kind of slowing you down a little bit, you can go to your Render settings.
Under Render settings, we could change the quality down, or we could select the replicator itself and press Ctrl+S to solo the layer. So when you're working in 3D, and specifically when you're working in 3D with a 3D replicator, make sure to optimize your playback, but definitely have fun and check out all the different options you can use to customize your 3D replicator.
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