using greenscreen video in cinema 4d

[Adam Trachtenberg]

You can create a background object, create a material with your greenscreen footage in the color channel, and put the material on the BG object. Cinema isn’t specifically set up to key greenscreen, but you can probably do a reasonable using the alpha channel of your material.

[Dave Wise]

kkita,

Do you want to have a keyed piece of footage directly into the environment that you can move the cam around with active shadows, etc?

I think I know what you are looking to do. Create a plane object or flat nurb (the standard square plane object works best for this). Create a new material. In your new material select your color channel and select the texture drop down to reveal your option to import a texture / image into that channel. Use the Load Image selection to find your keyed movie file and import that into the texture channel.
Depending on the file size and length of your video it may take a moment to load it.

Next go to the Alpha channel of your material and do the same. You will then probably need to select the Invert check box and the Image Alpha check box only. (I like it best with specular off also).

Depending on your version of C4D, that should do it. The movie file will be represented by the Plane object in the environment. Notice that as you render it out the keyed movie file will be where ever in the environment you want it to be. Be aware too, that the scrubbing of the play head in the timeline will not show you the video frames changing (until you render it out) unless you select the material you applied to the plane object in the Object tab/Manager and click on the material there. In the lower attributes of that material (video) you just applied to it you will see the selection box for “Animate Preview and that will update the frame of the video to the frame of the timeline in your C4D project.

Hope this helped,

Dave

[Paulie Notaro]

dave i have green screened onto a plane and when i go to render the scene all camera and lighting are there but the green screen footage is not,is there something i am missing in my render settings

[A.miller@yourmusicmuse.com Mueller]

Dave Wise pretty much covered it but I wanted to point out that I have done this before with pretty good results. Some things to point out tho are:

1. You have to key your footage and render out an .avi or quicktime animation with alpha in your nle first.

2. You have to check a setting in ambient occlusion to ignore transparency because it will affect the invisible edges otherwise.

3. The frame rate is locked at 30fps for textures in cinema and most video is 29.97 so your audio won’t sync up. I don’t know if they fixed this in later versions.

Hope this helps

Lee

Director Of Video Production (yes this is made up)

https://www.yourmusicmuse.com