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3d animated object and tracking in AE, possibly.

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sean lake
3d animated object and tracking in AE, possibly.
on Aug 31, 2015 at 4:06:47 pm

Let me apologize beforehand if this has been answered in various ways, but I thought I'd ask specifically to what I am trying to accomplish. Normally I use Nuke, but occasionally I use AE.
I'm aware that AE can be really simple for certain needs. So here's my need.
Please advise as to what would be the best course of action.
I have several shots, really short ones, but that's not important.
One is a shot, pretty much locked down, of a sky. I need insert an animated 3d object that will be rendered out in Maya.
What would be the best course of action?
Is there a simple way to track or should I not even track and just "insert" the obj or whatever into the scene?
There are other shots with the same object but the object will be moving within the scene and not just the sky. 1 or two shots has some moving actors involved. I don't see a real need for parallax, as before, the camera is pretty much locked down.
What would be the best way to do this? I know I'll need to import the rendered passes into either Nuke or AE, but what about tracking?
Any ideas, suggestions, etc would be greatly appreciated.

Thanks!


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Dave LaRonde
Re: 3d animated object and tracking in AE, possibly.
on Aug 31, 2015 at 6:04:01 pm
Last Edited By Dave LaRonde on Aug 31, 2015 at 6:10:18 pm

I'd just do a simple motion track in AE, apply it to a null object, and then parent the 3D render(s)from Maya to the null. You should be good to go.

You also might think about using Mocha for the track, or AE's camera tracker.

Dave LaRonde
Promotion Producer
KGAN (CBS) & KFXA (Fox) Cedar Rapids, IA


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sean lake
Re: 3d animated object and tracking in AE, possibly.
on Aug 31, 2015 at 6:12:55 pm

Maybe I could privately work with you to show you what I've got?


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Dave LaRonde
Re: 3d animated object and tracking in AE, possibly.
on Aug 31, 2015 at 6:22:54 pm
Last Edited By Dave LaRonde on Aug 31, 2015 at 6:24:13 pm

I doubt it would be necessary. As long as the shot to be tracked has a well-defined, static object in it, it should be a simple matter to track it. Just make sure the big box is large enough to accommodate any movement of the small box -- the thing you're actually tracking -- bgetween any 2 frames of the shot.

It sounds like you're just talking about a shot with camera jiggle, a little minor camera movement... something like that. It should be a piece of cake. Oh, you MIGHT find that you picked the wrong portion of the shot to track, but you just delete that track and do another one using a different object in the shot. It's not exactly intuitive, but pretty close to it.

Give it a shot -- I bet you succeed.

Dave LaRonde
Promotion Producer
KGAN (CBS) & KFXA (Fox) Cedar Rapids, IA


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sean lake
Re: 3d animated object and tracking in AE, possibly.
on Sep 1, 2015 at 2:53:33 am

I got a bit lost to be honest. I tried drawing the spline in mocha, which works fine, but then what? export tracking?
Then you said add a null object and attach the 'rendered" bit from maya?


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sean lake
Re: 3d animated object and tracking in AE, possibly.
on Sep 1, 2015 at 3:25:14 am

https://www.dropbox.com/s/3juoqjhpj89w5ut/EP13_SHOT01.mov?dl=0

Here's one of the shots. I guess, export the "tracking" to Maya animate the copter, render that, import the render into AE, attach somehow to the tracking data?

Does that sound right?

https://www.dropbox.com/s/k4i11hfovb1jsrc/scene.mb?dl=0


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Dave LaRonde
Re: 3d animated object and tracking in AE, possibly.
on Sep 2, 2015 at 1:43:42 am

Oh, I'm not talking about Mocha, I'm talking about AE's built-in Motion Tracker. Lots easier than Mocha, and from your ddescription of the shot, very capable of doing the job for you.

Dave LaRonde
Promotion Producer
KGAN (CBS) & KFXA (Fox) Cedar Rapids, IA


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