Autodesk 495B1-05A111-1301 - 3ds Max Design 2010, Руководство пользователя

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NOTE To avoid nonsense backward vectors on the first frame and nonsense
forward vectors on the last frame, the repeat mode of the clip should be such that
the image before the first frame and the image after the last frame are similar or
identical to the first and last frames, respectively.
Importing Motion Vectors From Maya
There are two types of render passes that you can use in Maya to render your
motion vectors: the 2D Motion Vector and the Normalized 2D Motion Vector.
NOTE You can import 2D motion vectors that were computed in another
application (e.g. 3D render)—see Importing Media on page 118
The 2D Motion Vector appears as “mv2dtoxik” when it is created. If you render
your motion vectors in Maya using the 2D Motion Vector render pass, the
motion vectors data is kept intact. Furthermore, you don’t need to set any
motion vector options on import in Composite.
The Normalized 2D Motion Vector appears as “mv2dnormremap” when it is
created. If you render your motion vectors in Maya using the Normalized 2D
Motion Vector render pass, the motion vectors are normalized between 0 and
1. When importing the render pass in Composite, you have to set motion
vector import options to convert the motion vector data to the true values.
NOTE For both the 2D Motion Vector and the Normalized 2D Motion Vector,
you must make sure to render your motion vectors in the EXR format.
In Composite, you can set the motion vector options on import or after
importing the render pass.
712 | Chapter 30 Vectors