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alex

jagged greenscreen issue c4d

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hi everyone

 

i have a kids ad to do in which kids will be shot on greenscreen dancing

then placed in and around big 3d letters.

 

ive been doing some rough tests before the shoot and

the problem i have is when i import the already keyed footage onto

a plane and then place it into the 3d environment i get a jagged square shape

refelected onto the 3d text.

 

does anybody know how to get rid of this?

 

ive uploaded some images to show what i meen.

 

http://img297.imageshack.us/img297/4145/picture2wf5.png

 

http://img364.imageshack.us/img364/729/picture1ot0.png

 

if anybody could help this would be great

 

cheers

alex

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You need to adjust your AA settings. Most likely first set "Best" instead of "Geometry". Then maybe

set the Min/Max AA. And -maybe- adjust the raydepth if many planes are overlapping.

 

You might consider using Nulls with ExportTags instead, export the scene as .aec and you can have

faster revisions. (Hooking the planes to the Nulls in AE.) Make sure to dload the latest CinemaAE plugin

from Maxon. They just released a new one for CS3 some days ago.

 

Cheers

Lennart

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aww no worries ive just found the AA and that works

a treat :)

 

thanks very much!

 

just one more thing, could you expand abit on

the other way of me doing this ad by importing

the nulls into after effects. i know how to import

a c4d scene into af but not seen the technique your

suggesting

 

thanks again

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In the render settings you have the option to export to AE using .aec

Have a active Camera and add External Compositing tags to Nulls (at the

location of your kids)

A bit to busy going thru the process.

Make a simple test scene to get the hang of it.

 

Cheers

Lennart

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Hey there . . . I think what you need help with is the null export to AE. You can do this in C4D by creating a new null object and placing it in the scene where you would like to set the footage in AE. Then right click in the object palette and apply Cinema 4D Tags>External Compositing Tag. This will show up in AE as a null with the same name as in your C4D project and when you do the .aec output will have the correct relationship to the camera that is needed. I usually then copy and paste the position of the null to the 3D layer in AE, adjust to the correct position and then parent to the null.

 

Hope this helps and if you have more questions post em up

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