K fellas, im using Cinema 4D and have everything tracked, imported and added a object and so forth. Im using a clip i have of me filming down a neighborhood and im in the middle of the street. I added a cube in the street within cinema 4d, added a floor, and added a light source for a shadow. My question is this.
How do i render this and combine both the orginal footage to the 3d rendered footage of the scene into combustion ? Is it done with RPF, if so, HOW so hah? What should i label my alpha settings as etc.  
If u can answer this, i need u to be VERy specific please. VERY SPECIFIC!
thx guys, take care.

anyone?

Hello,
Maybe you'll get more hit on some compositing forums such as http://www.cgtalk.com/

Hi dbx
After you have imported the cinema file from MM to cinema 4d create a new material and apply the original movie to it (in the color option). Ensure that you get into the animation settings of the material and calculate all the frames. Apply this material to a background object (the mapping should be Frontal by default). Your objects and floor can be placed in the scene (although I have only used a plane not a floor object as I can apply a compositing tag to it and only allow it to recieve shadows and not cast any). The same movie material is applied to the floor plane (Frontal projection again). This allows the texture of the movie to be applied to your floor object making it indistinguishable from the rest of the scene but allows the shadows to be cast onto the movie "floor". The whole scene can then be exported from cinema (the original movie footage will be composited along with your objects). I hope this makes sense I've only had MM for 1 day and cinema for a year and the software integration gets some getting used to. Hope you can understand this explanation, I'm not used to replying to queries in forums.
Izzyabo