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So we've looked at multi-pass compositing, and the layer based compositing as ways of isolating elements in Cinema 4D. There are other methods that you can use to create compositing in Cinema 4D. Where you can actually composite 3D elements into the scene. New 3D elements within After FX. We're going to have a look at that here and how we can then apply effects to those. We're on chapter 13 cu start and if you want (INAUDIBLE) And what I'm going to do, is start by extracting seam data from the cinema 4d file.
Just to show you that Cinema 4d file, this is chapter thirteen see you start.c4d. I'm going to hit Cmd + D or Control + E on Windows. To open it up in Cinema so you can see What it consist of. If you remember we setup a camera animation using a stage object (INAUDIBLE) to animate between different cameras. I also setup some nulls as well in here for these video walls so that we could replace these video walls and floors with video elements in aftereffects.
So we're now going to extract elements based on the nulls The lights and also these cameras. Now, very important, I have added a compositing tag to the nulls, because you need that in order to be able to bring the geometry of the Layer over to after effects. Let's just remind ourselves of the animation. (NOISE) (MUSIC).
Okay, so if we jump over to after effects the moment we've just go a single rendered Cinema 4D file but if I click on extract it creates All the cameras, lights, and nulls, that I set up using the compositing tags, from CINEMA 4D. And if I just, hit the accent key, hovering over the timeline, you can see what it's brought in. It's brought in the lights, three cameras, and two nulls, or layers, as they are in this case.
So, let's just jump back And let's see what we can do with this. Well, the first thing that I want to do is, I want to edit the cameras. Now, when you bring the cameras in, unfortunately it doesn't edit them for you, it just brings in three cameras And, unfortunately, you have to recreate the edit in AfterEffects. So there's no real workaround for that at the moment. So that's what I'm going to do here. I've set up some markers which will make it easier for me to jump around the scene.
So I'm going to jump to the first marker. J and K allow me to jump between markers. And I've set these up because I know these are the edit points where we jump from one camera to another camera. So basically I want these cameras to match up with the cameras, that we used to shoot the footage in CINEMA 4D. So I'm going to select the Close Up Start camera, and I'm going to go to Edit > Split Layer. And that just splits the layer at that point. And now I know that I'm not going to use this camera again until the end.
Basically I just looked at the original for reference, went into the animation setup and you can see that I've got markers in there. So I just used the markers for reference and created Markers in after effects which (UNKNOWN) So I want to cut it here so I'm going to hit alt + left bracket and that will trim the endpoint of that there. So I've got that camera at the beginning and the end. Then I want to go from that camera. At the first marker to the close up camera which is this one.
Now, I don't want to move the layer because we have keyframes on this layer. So it's very important that these keyframes are maintained. So what I've, shall do is just trim that layer. So Alt + left bracket trims in point. And then I'll jump to the next marker, and I'm going to split the layer. So command shift D, or control shift D on Windows, to split the layer. And then, I'm going to jump to the next marker. Need to actually be able to see the markers on the layer to be able to jump to them.
And this time, I'm just going to split the layer again, because I know that I need another piece of it. If I just trim it, I won't have any left. So, I'm going to split the layer. Cmd > Shift > d, or Ctrl > Shift > d on Windows, and then we need, the white text again. Now, I've accidentally trimmed instead of splitting the layer. I should've split the layer, really, but we'll just carry on, and I'll show you how we can duplicate it in a second. So what I'll just do is trim this one, so Alt-left bracket, and then the last bit will be here at the next marker, and I'll just do Alt-right bracket there for a second.
I may need to trim that a little more. So if you have >> Deleted to much of a layer. You can just duplicated it. And best if I move it up so I don't get confused in terms of the timing of the layer. And then, I'm just going to reset the end point. So, Alt+Left Bracket and Alt+Right Bracket. will trim to those markers. Okay. I've made a bit of a mess and that really. A bit (INAUDIBLE) but never mind, you get the idea. So, this one actually needs to be trimmed one frame back.
So, I'm going to trim that one frame back. I'm going to duplicate this again. Now if I do split layer instead of trim, I would have saved myself a whole lot of bother. OK. I'm just going to trim this one by hand. OK, so now we have The cameras matching up with the cameras from my scene. I've actually just realized, I've made a complete mistake with that. I've actually, just used the same camera throughout, okay. It's very easy to make mistakes in After Effects, and I don't like to record over my mistakes.
so I"m going to leave that in there and just very quickly re-trim it. So of course, it should alternate, between Two cameras, so it should go from the tracking camera to the wide camera, and vice versa. So to do it correctly, you see, what I should do, is instead of trimming the layer Hit Cmd > Shift > d to split the layer, and then I have enough left to do the next gap. So, one frame ahead, Cmd > Shift > d, to split the layer again, you can delete that portion, and then, just trim it here, so select it, and hit Okay, there may be a little bit of trimming still to go on there.
So apologies for me making those mistakes but I like to leave mistakes in there because it makes you feel better about it when you make mistakes too. So there we have the cameras animating in time with the other cameras. Now, at the moment their not visible so. These solids don't react to the cameras as we move through but if I make these cameras visible you'll see now that as we move through and I'm just going to do this quite quickly, just do a quick grand preview holding down Shift>Render every second frame.
You should now see When the solids come into shot the-, they're reacting to all the different cameras. So basically all those camera are mimicking the camera I used in Cinema 4D. So any new 3 d elements that we composite in here ill match those camera moves. And that's what we're going to do in the next step. We're going to use those nulls. To position some video layers to create a background for this composite. Okay. I've got a little bit more work to do on that, the trimming of those camera layers, so while I do that, I will let you move on to the next video.
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