Here's how to import a Cinema 4D scene file into After Effects.
First, update the Cinema 4D render settings. These will be inhereted by the After Effects composition settings when the file is imported into After Effects.
https://fast.wistia.net/embed/iframe/qgi1ovi43x
In Cinema 4D, go to Render → Edit Render Settings (⌘B / Ctrl + B).
Update your render settings:
Output
Anti-Aliasing
Go to File → Save (⌘S / Ctrl + S) to save the Cinema 4D file.
Open After Effects CC.
Go to File → Import → File... (⌘I / Ctrl + I) and browse for your Cinema 4D scene file.
<aside> 💡 You can also double-click the Project Panel and browse for your Cinema 4D scene file.
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[Optional] Import the background from the scene file.
After Effects CC defaults to a transparent background for imported Cinema 4D scene files. Ignoring it will import our scene exactly as it is, including the background.
https://fast.wistia.net/embed/iframe/qef5fmkvdh
<aside> ⚠️ When you create a composition from a .c4d file, it's based on the render settings from Cinema 4D. After the composition is created, however, changes to the render settings will have no effect on it.
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You now have a composition in After Effects! It's linked to your Cinema 4D file, so any changes you make in Cinema 4D will be show up in After Effects.