Compositing Alien Ship

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  01 January 2016
Compositing Alien Ship

Hello all. I was wondering if anyone knew of any suitable video tuts for my issue...

I'm compositing a UFO into a scene. This UFO has lights on it that glow in the second pass of rendering. I try and render it with an alpha channel in Maya, and then when I place it into AE I can't seem to get the alpha to work...the bloom of the lights have a cut and paste style seam at the edges...you know, not dithered and faded.

I imagine I'm not setting up multi-pass in AE or Maya properly?

Thank you so much for helping. This is for an indie film. I'm doing a buddy a favor.

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Michael Reed
http://actormichael.wixsite.com/libradragon
actor.michael@gmail.com
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  01 January 2016
Nada eh? Hmmm. I'll keep Googling. Thanks. The answers out there. Been piecing multiple tutorials together to get the desired information needed.
__________________
Michael Reed
http://actormichael.wixsite.com/libradragon
actor.michael@gmail.com
-----
Intel I5 3.5 Ghz
AMD R2 290
16 Gig Ram
Win 8.1
 
  01 January 2016
There's a ton of ways to do the glow on the lights. I'm not sure what you mean when you say you are trying to use the alpha channel, though. The alpha channel of just the isolated lights?

You could use that alpha channel of the lights, place it over the render, set the layer to "Add" blending mode, and add a blur and some color to it. That would do a nice job of creating the glow. You could do a couple different versions of that with the blur set both small and large, and vary their opacity, to get a very nice effect.

But that's just one way.
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  01 January 2016
Well, what I was trying to do is just animate the whole thing in Maya, and drop the animation in AE...

...however, the glow isn't looking right. The edges of the glow are not smooth and naturally fading...

Typically, would I animate the model, and THEN in a separate layer, add the glow of the lights?

Thank you in advance.
__________________
Michael Reed
http://actormichael.wixsite.com/libradragon
actor.michael@gmail.com
-----
Intel I5 3.5 Ghz
AMD R2 290
16 Gig Ram
Win 8.1
 
  02 February 2016
Might help to fake the lighting after compositing the ship into the scene. Or rather, pop another compositing pass into the pipeline.

EDIT: Looks like you already thought of that! Ha.
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  02 February 2016
I've decided to just let it be as is. I've got a nice alpha Targa from Maya, and AE is taking it cleanly, so I'm going to go without the glow for now.

Adding all the glow in AE might be too much of a headache to be worthwhile.

__________________
Michael Reed
http://actormichael.wixsite.com/libradragon
actor.michael@gmail.com
-----
Intel I5 3.5 Ghz
AMD R2 290
16 Gig Ram
Win 8.1
 
  02 February 2016
Is the alpha properly pre-multiplied? What does the glow pass look like exactly? Post it please.

Also adding the glow in ("Add" blend mode) will get rid of any black in the pass, and is also the correct way to composite such effects anyways so you should use that. Glows are some of the least problematic things to composite I would say.
 
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