CGTalk - render question

[.Q.]

06-04-2005, 02:39 PM

hi.. i was wondering.. i just rendered out an uncompressed avi in maya.. and after effects wont import it or any re-coded version of it...ok fine i sayd

then i rendered out as tga sequence.. and imported them into after effects.
The sequence was rendered out against a black background so i used a plugin to make an alpha channel.. but not my object is VERY transparent...

so basicly the question is: how do i render against an transparent background.. so i dont have to use that make AC plugin.?

thanks
Q.

dudders

06-04-2005, 03:01 PM

Im no expert at exporting into after effects but if you save the targas with an alpha channel from Maya, does that not work? Otherwise use a bright green or blue background (or some colour that isnt in your scene) and use after effects to get rid of it.

[.Q.]

06-04-2005, 03:57 PM

yes tga's rendered with an alpha but this happend: (now i`m struggling to get rid of that black edge...) ARRRRGHHH :D
http://www.skill.ro/poze/temp/1.JPG (http://www.skill.ro/poze/temp/1.JPG)

qba3d

06-04-2005, 04:01 PM

use the alpha premultiply???

Q

[.Q.]

06-04-2005, 05:25 PM

yes yes i did set premultiplied in After effects...
so there isnt a way to render against a transparent background?

i just rerendered with the composited background and its better..but i would like not to render it with it

victor

06-04-2005, 05:39 PM

I'm sorry, but that "black edge" looks like it's just your lighting. Either point some lights at it or add some ambient lighting.

cshanks

06-04-2005, 11:24 PM

could be a problem with your shader. check your shader.

[.Q.]

06-05-2005, 01:22 AM

i added more lights and it worked.. thanks alot...
its the first time i need to do big thing.. and all the little problems overwhealmed me

thanks for the help

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