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Maya 2011 Essential Training

Using motion blur in mental ray


From:

Maya 2011 Essential Training

with George Maestri

Video: Using motion blur in mental ray

Setting up motion blur in Mental Ray is a little bit different than setting up in the Maya Software Renderer. There is some different parameters, but a lot of the theory is the same. So I've got our little guy on the scooter. Let's go ahead and just find a frame that is good for motion blur. So, actually probably a good frame is this one to ones towards the end here, where he is kind of zooming offscreen. So I'm going to pick Frame 89. Let's go ahead and set up some motion blur. But before I do, well, let's just do a quick render of the scene just to see what it looks like.
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  1. 3m 50s
    1. Welcome
      1m 34s
    2. Using the exercise files
      26s
    3. A note on screen resolution
      1m 50s
  2. 1h 0m
    1. Overview of the Maya interface
      7m 42s
    2. Working with files and Maya projects
      2m 27s
    3. Navigating viewports
      5m 56s
    4. Reviewing the Viewport menus
      6m 28s
    5. Configuring safe frames and grids
      3m 21s
    6. Selecting objects
      4m 33s
    7. Using the Move tool
      3m 48s
    8. Rotating and scaling
      4m 31s
    9. Manipulating pivots
      3m 59s
    10. Understanding the Channel Box
      5m 36s
    11. Working with the Attribute Editor
      2m 28s
    12. Using the Hotbox
      2m 59s
    13. Working with marking menus
      3m 6s
    14. Customizing the interface
      3m 36s
  3. 59m 25s
    1. Creating polygonal objects
      6m 28s
    2. Working with polygonal components
      4m 42s
    3. Selecting polygonal components
      5m 44s
    4. Working with Soft Select
      7m 3s
    5. Using the Extrude tool
      6m 47s
    6. Keeping faces together
      2m 42s
    7. Extruding along curves
      3m 27s
    8. Using the Polygon Bevel tool
      4m 14s
    9. Smooth and subdivision surfaces
      7m 6s
    10. Blocking out a character body
      11m 12s
  4. 36m 6s
    1. Working with edge loops
      3m 27s
    2. Inserting and offsetting edge loops
      3m 38s
    3. Symmetrical modeling techniques
      5m 53s
    4. Combining objects
      3m 50s
    5. Using the Polygon Bridge tool
      2m 7s
    6. Connecting components and splitting polygons
      2m 48s
    7. Poking and wedging faces
      2m 49s
    8. Working with polygon booleans
      3m 17s
    9. Modeling with nonlinear deformers
      4m 54s
    10. Modeling with lattices
      3m 23s
  5. 1h 18m
    1. Introducing NURBS modeling
      5m 3s
    2. NURBS primitives
      5m 54s
    3. Using the NURBS curve tools
      5m 7s
    4. Creating Bézier curves
      1m 59s
    5. Creating text
      3m 51s
    6. Manipulating NURBS curves
      4m 13s
    7. Refining NURBS curves
      4m 16s
    8. Offsetting NURBS curves
      2m 31s
    9. Editing NURBS surfaces
      7m 3s
    10. Refining NURBS surfaces
      7m 22s
    11. Using NURBS Revolve
      7m 31s
    12. Using NURBS Loft
      4m 11s
    13. Using NURBS Extrude
      6m 0s
    14. Using NURBS Planar
      4m 47s
    15. Stitching NURBS surfaces
      8m 52s
  6. 35m 53s
    1. Extracting NURBS curves from surfaces
      5m 57s
    2. Creating curves on a surface
      3m 53s
    3. Projecting curves on surfaces
      7m 2s
    4. Trimming NURBS surfaces
      3m 42s
    5. Using the NURBS Fillet tool
      5m 31s
    6. Sculpting NURBS and polygonal surfaces
      5m 52s
    7. Converting NURBS to polygons
      3m 56s
  7. 33m 22s
    1. Working with the Outliner
      4m 58s
    2. Grouping objects
      4m 2s
    3. Creating hierarchies
      4m 17s
    4. Duplicating objects
      4m 51s
    5. Understanding the Hypergraph
      3m 32s
    6. Working with Hypergraph connections
      2m 31s
    7. Hiding and showing objects
      2m 12s
    8. Creating layers
      4m 2s
    9. Working with selection masks
      2m 57s
  8. 40m 18s
    1. Overview of renderers
      3m 24s
    2. Understand the basics of materials
      6m 15s
    3. Creating and applying maps
      5m 13s
    4. Using bitmaps as texture
      2m 59s
    5. Working with the Hypershade window
      5m 12s
    6. Working with mental ray materials
      6m 57s
    7. Using displacement and bump mapping
      3m 14s
    8. Using the Ramp Shader
      2m 36s
    9. Using the 3D Paint tool
      4m 28s
  9. 30m 14s
    1. Texture-mapping NURBS surfaces
      5m 46s
    2. Projecting textures onto surfaces
      4m 0s
    3. Texture-mapping polygonal surfaces
      7m 0s
    4. Applying UV mapping
      8m 11s
    5. Using the UVW Editor
      5m 17s
  10. 41m 16s
    1. Creating joints
      10m 2s
    2. Deforming a mesh using the Skin tool
      5m 2s
    3. Creating IK handles
      6m 48s
    4. Creating blend shapes
      5m 39s
    5. Rigging nonlinear deformers
      2m 36s
    6. Finalizing the character
      4m 45s
    7. Rigging the character to the scooter
      6m 24s
  11. 1h 5m
    1. Working with the Timeline
      4m 16s
    2. Creating and adjusting keys (keyframes)
      5m 4s
    3. Editing keys
      3m 13s
    4. Modifying keys in the Graph Editor
      5m 47s
    5. Modifying keys in the Dope Sheet
      2m 51s
    6. Creating breakdown keys
      2m 28s
    7. Animating objects along paths
      5m 54s
    8. Animation playback using Playblast
      3m 10s
    9. Animating with constraints
      6m 16s
    10. Creating animation cycles
      8m 25s
    11. Using set-driven keys
      6m 13s
    12. Adding sound to animations
      2m 24s
    13. Finishing the animation
      9m 45s
  12. 1h 2m
    1. Lights and lighting types in Maya
      7m 29s
    2. Adding depth-map shadows
      4m 13s
    3. Using Raytrace shadows
      3m 28s
    4. Understanding the basics of cameras
      7m 14s
    5. Adding depth of field
      6m 31s
    6. Adding Bokeh using mental ray
      4m 33s
    7. Using motion blur in Maya Software Renderer
      4m 10s
    8. Using motion blur in mental ray
      3m 5s
    9. Raytracing reflections and refractions
      4m 41s
    10. Interactive rendering with IPR
      3m 33s
    11. Lighting a scene
      8m 29s
    12. Batch rendering
      4m 53s
  13. 25s
    1. Goodbye
      25s

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Maya 2011 Essential Training
9h 8m Beginner Jun 01, 2010

Viewers: in countries Watching now:

In Maya 2011 Essential Training, George Maestri demonstrates the tools and feature set in Maya, as well as the skills necessary to model, texture, animate, and render projects with this deep and robust piece of 3D animation software from Autodesk. This course takes an in-depth tour of Maya's interface, including navigating and manipulating objects in 3D and customizing the workspace. The course also covers object creation and modeling basics, shading and texturing, surface mapping techniques, character rigging, and lastly, rendering and final output. Exercise files accompany the course.

Topics include:
  • Getting familiar with the Maya interface
  • Organizing scenes
  • Creating hierarchies
  • NURBs modeling for solid objects
  • Adding color to models
  • Applying bitmap textures
  • Working with mental ray materials
  • Polygonal modeling for characters and organic objects
  • Deforming with the Skin tool
  • Setting up lights and cameras
  • Creating realistic effects such as depth of field
  • Working with the Timeline
  • Creating animation cycles
  • Batch rendering
  • Rendering with the mental ray engine
Subject:
3D + Animation
Software:
Maya
Author:
George Maestri

Using motion blur in mental ray

Setting up motion blur in Mental Ray is a little bit different than setting up in the Maya Software Renderer. There is some different parameters, but a lot of the theory is the same. So I've got our little guy on the scooter. Let's go ahead and just find a frame that is good for motion blur. So, actually probably a good frame is this one to ones towards the end here, where he is kind of zooming offscreen. So I'm going to pick Frame 89. Let's go ahead and set up some motion blur. But before I do, well, let's just do a quick render of the scene just to see what it looks like.

Okay, so this is without any motion blur. So go ahead and just remember that. Let's go ahead and start setting up to motion blur. So in mental ray, the motion blur settings are a little bit different. So we can find them under the Quality tab. If we scroll down here, you'll see we have Motion Blur right here. We have three settings. One is Off, the other one is No Deformation, and the other one is Full. Now with No Deformation, what it does is it basically doesn't calculate motion blur based on deformation.

So if I have some sort of skeletal animation or something like that, then that will not be calculated in the motion blur. But I am going to go ahead and turn this on and let's just go ahead and do a quick motion blur of this scene with the setting at No Deformation. So when we've rendered this with No Deformation, you can very easily see what the problem is, is that if anything is using a skeletal or any sort of deformation that will not be calculated in the motion blur solution.

The reason that mental ray does this is because it's faster when you don't calculate deformations. But in our situation, the arms of this character are being deformed, and so what we're getting here is we're getting just an incorrect result. So, let's go ahead and turn on Full Deformation. Also, let's go ahead and take a look at some of these parameters. The first parameter is Motion Blur By. This parameter basically just multiplies or reduces the amount of motion blur. Larger numbers, bigger motion blur, smaller numbers less.

The other two are Shutter Open and Shutter Closed. Basically, what they do is they simulate the camera. So, the closer they are together, the less motion blur you're going to get. So now with Motion Blur on Full, let's go ahead and do a quick render. So as you can see, with Motion Blur on Full, the arms are actually rendering properly. If we want, we can increase or decrease the motion blur by using this Motion Blur By parameter.

But these are the basics of mental ray motion blur. It's actually a little bit simpler to set up than the Maya Software Renderer motion blur, because it's always a real -time physically based motion blur as opposed to Maya, which can have 2D or 3D.

Find answers to the most frequently asked questions about Maya 2011 Essential Training.


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Q: The Chapter 2 exercise file dog_reference.mb appears blank when opened in Maya. I can't see the dog image. What do I do?
A: Make sure you are working with the most current version of the exercise files for this course from the lynda.com site. Try downloading the files again. If the image still doesn't appear, make sure the project folder is set to the matching (Chap02) folder in the exercise files.
 
Also check to make sure you have "hardware texturing" enabled under the viewport's Shading menu.
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