| merging video and 3D in c4d
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 | merging video and 3D in c4d
by FrB on Oct 11, 2001 at 3:26:34 pm |
is it possible, for example, to record a movie and then put a 3D element moving in it using C4D ?
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• | | | |  | Re: merging video and 3D in c4d
by thorn on Oct 11, 2001 at 6:07:36 pm |
In short, yes.
However, without knowing what type of equipment you have, what apps you have at your disposal, and what type of scene you're attempting to building - i can't offer any more suggestions in that area.
thorn
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• | | | | | Re: merging video and 3D in c4d
by FrB on Oct 11, 2001 at 6:56:27 pm |
well, I have a little webcam (Kodak DVC 323) but I also have access to a Canon XL1 camera, I have C4D XL R7, 3DS Max 3.0, Lightwave 7, After Effects 5, Premiere 6.0, and so on
the scene would be quite basic, lets say I shoot my floor, and I make a little robot walk on the floor
what would I have to use
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• | | | | | Re: merging video and 3D in c4d
by thorn on Oct 11, 2001 at 11:59:54 pm |
Well, shoot the floor with your camera and digitize the footage. Export a frame of it for a reference plate.
Import the image into your 3D app as a background image, and adjust the 3D camera as needed to match perspective.
Create your animtion, and render it out with an alpha channel.
Take the render into After Effects, layer it on top of the digitized floor footage and adjust the levels of the rendered footage to match for color/hue/brightness.
thorn
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• | | | |  | Re: merging video and 3D in c4d
by Marco on Oct 15, 2001 at 10:28:19 am |
You might also want to be careful about the Alpha channel output. Generally, AE likes pre-multiplied Alphas. You might have to use a plugin inside AE, such as Matte Choker, to get rid of any Anti-aliasing problems that might arise with the Alpha-channel.
When you render out from CINEMA, take into account that you should match the lense-angle, and -aperture. Add a noise filter to the 3D stuff or even Media-filter to get rid of the crisp 3D look. I'd also recommend taking out some colour, since Webcams are never as colour-strong as 3D images. If you want to go all out, try adding a Levels filter in AE, with an inverted gamma of 0.45, before any other plugins and ending the pipeline with another gamma-filter of 2.2 (the natural gamma of video). This way you'll make sure that the filters work in video-gamma-space (which is logarithmic -> 2.2), not in linear RGB space.
The rest is trial and error to make it look good.
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