Join Lee Lanier for an in-depth discussion in this video Removing camera jitter, part of VFX Techniques: Crowd Replication with After Effects.
When working with live action footage in visual effects, there are several camera artifacts…you have to be concerned with.…One is camera bumps and jitter that might occur as the camera is moved.…The other is compression and noise might be present just because the nature of the camera,…for instance, a video camera has compression noise.…But why should you be concerned about that?…Well, in terms of camera bumps, the camera move might not be smooth enough to make a nice shot.…Also, it might make the motion tracking more difficult.…
In terms of noise and compression artifacts, that can also interfere with motion tracking,…and in fact, we're going to have to do quite a bit of motion tracking in this project, because we…have to track a number of green screen plates to build up a crowd for this room.…In terms of the camera bumps that can also interfere with the motion tracking make…it more difficult, but, it just might not look as nice.…Let's play this back and take a look.…There are definitely some awkward pans as the camera suddenly moves right or left as…
- 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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