Replacing a laptop screen material in After Effects

[Henryotoy]

Hello,

I've created an animation in C4D & Octane of a laptop opening.

I'd like to render it out (I assume in EXR), open the image sequence in After Effects and replace the material on the 'screen' object with a comp from within After Effects.

This material sits behind a 'glass' object, so I'm hoping when I replace the 'screen' material it will keep all the reflections from the HDRI.

This way if the client changes the screen contents I don't need to re-render out the laptop animation from C4D.

Thank you.

[Henryotoy]

I've attempted this - but it's still not right.

• Export a Tif sequence (took 23 hours for 300 frames!)
• Put an external tag on the 'screen' object, made it a solid and matched the size of the material (although it rounds this measurements up/down).
• Converted the Greyscalegorilla Signal Tag to keyframes for the camera movement
• Imported this C4D into AE
• Extracted the data
• I can see the camera and red solid
• Rotated the solid 90 degrees on the X axis

Tracks perfect put is about 30 pixels too far down - not sure what else to do to make it line up

I also don't know how to export just the reflection to sit over the top without doubling up the reflection strength on the rest of the animation

Thanks