2010

Table Of Contents
are not accurate. Even if one track point is off alignment on one frame, it
could result in an incorrect solution.
Your solution has the correct camera movement, but you may wonder
why the camera and locators are placed below the perspective view grid.
If you want to control where the solution is placed within the scene, you
need to give the solver more information, called survey constraints.
Continue with the next lesson to learn more.
Exporting and rendering solutions
With the camera movement solved, you can create your animation using the
solved camera to make sure the animation does not move out of the camera
view. If your animators use Maya Complete or another software product, you
must export the camera solution from Live (Scene > Export Scene As). You
can also export to other 3rd party 3D and compositing applications.
When you render the animation, we recommend you do so without the image
plane background. A better workflow is to render the animation created in
Maya separately and then use a compositing software application to combine
it with the live footage background.
However, if you do want to render the image plane, you must turn off the Use
Cache option on the Setup control panel. The Use Cache option utilizes a Roto
node, which does not render. By turning Use Cache off, Live switches to the
standard Maya image plane, which is renderable.
Lesson 2: Solving with survey data
Introduction
This optional lesson is a continuation of the previous lesson.
The objective in this shot is to replace the filmed fence with a fence modeled
in Maya. Suppose you had taken measurements of the fence from the film set
and used the measurements to model a fence in Maya. The locators created
by Live would not match the same scale that you used for the model. Also,
the locators and camera Live created are not near the perspective view grid,
which is a convenient reference for modeling and animating.
To solve these issues, you can incorporate the measurements you surveyed
from the set into the Live solver. You do this with the survey constraints
feature.
1002 | Chapter 20 Live