Join Lee Lanier for an in-depth discussion in this video Removing an old sky, part of VFX Techniques: Building Replacement with After Effects.
We have spent some time tracking some foreground elements and also tracking this…new billboard using the 3D tracker.…We are ready to move on and start building the composition, where we start adding…all the elements together.…So in fact I am going to make a brand-new composition, Composition>New…Composition. I want to make sure this new composition is the same size as the first…one in terms of the resolution, 1920 x 1080, there's a preset for that which is called HDTV…1080 24, it is 24 frames per second, and that the duration is 120 frames.…
I will go ahead and rename this one also, I'll call this BuildStreet, click OK,…here is a new comp and this will be where we combine everything together to…build up the new street with the new building.…I want to start this by dragging a new copy of the street footage down into the composition.…I'm going to rename this backgrounds become the new background.…Now the first task here will be to remove the old sky. We've already tracked a new…sky in the previous composition, but we need to remove this one, so the new sky…
Learn how to track the footage with the Adobe After Effects 3D Camera Tracker, replace areas such as the sky, rotoscope moving elements such as buildings and cars, and integrate a digital matte painting so it gains appropriate shifts in perspective and scale. You'll also apply color-grading techniques and learn how to fabricate reflections. The course also covers an alternative motion-tracking workflow with the Foundry CameraTracker plugin.
- Using the After Effects 3D Camera Tracker
- Applying tracking data to 3D layers
- Constructing and refining motion graphics
- Keying out the sky
- Rotoscoping to remove and save features
- Using the Foundry CameraTracker plugin
- Creating reflections
- Color grading