Join Lee Lanier for an in-depth discussion in this video Motion tracking CG renders, part of VFX Techniques: Crowd Replication with After Effects.
One common task of visual effects work is integrating 3D renders with the live action footage.…One important aspect of that is to make sure that the 3D renders take on the same camera…movement as the footage. There are several ways to try to achieve that.…One is to try to replicate the camera in the 3D program like Maya, the other is to motion…track in the compositor, like After Effects. We are going to try the latter.…So first we need a 3D render. I am going to go up to File > Import > File.…I'm going to go to the Renders folder and grab the Tubes Render.…
It's a series a PNG files, so I will just pick the first frame and click Open.…Now we'll take a look at that.…These are set of industrial tubes rendered in Maya to design the matching element at…the background that's already there.…The camera was set up in Maya to roughly replicate the original camera in a very simple fashion…just in the first and last frame, but no additional keyframing in the center.…So center is not particularly accurate, and just the first and last frame are somewhat roughed in.…
- Setting up your project
- Removing camera jitter
- Motion tracking CG renders
- Creating light effects
- Keying with Keylight
- Solving bad matte edges
- Rotoscoping green screen footage
- Color grading to match elements
- Relighting the scene
Skill Level Intermediate
1. Getting Started
Reviewing image sequences4m 13s
2. Tracking and Integrating Renders
3. Working with Greenscreen
4. Color Grading and Rendering
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