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mocha 2.6 Essential Training
Illustration by John Hersey

Rendering mattes


From:

mocha 2.6 Essential Training

with Steve Wright

Video: Rendering mattes

In some production situations, you'll want to render out the black and white matte to disc to be imported into another program. Here we'll see how to do just that. I am using the rendering mattes mocha file from the Project Media Folder. To ensure compatibility with the program you're exporting to, make sure that the Clip Length, Frame Rate, Interlace Mode, Pull-down Mode and Pixel Aspect Ratio match your main project. To render out your mattes, you come up to the File, select Export Render Shapes.
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  1. 5m 23s
    1. Welcome
      1m 40s
    2. Getting to know the user interface
      3m 43s
  2. 1h 7m
    1. Drawing X-splines
      8m 2s
    2. Drawing B-splines
      5m 4s
    3. Editing splines
      3m 52s
    4. Keyframing splines
      6m 33s
    5. Discovering the timeline controls
      5m 52s
    6. Walking through the New Project window
      4m 23s
    7. Working with interlaced clips
      8m 19s
    8. Setting the color space
      4m 46s
    9. Defining mocha preferences
      3m 46s
    10. Walking through the Layer Control panel
      3m 22s
    11. Walking through the Layer Properties panel
      3m 29s
    12. Viewing mattes
      3m 41s
    13. Walking through the Edge Properties panel
      6m 24s
  3. 1h 8m
    1. A planar tracking demo
      6m 36s
    2. Setting motion options
      13m 12s
    3. Adjusting the tracking spline
      8m 51s
    4. Tracking awkward surfaces
      6m 3s
    5. Understanding the planar grid
      6m 50s
    6. Dealing with lens distortion
      7m 43s
    7. An AdjustTrack demo
      5m 49s
    8. Keyframing the AdjustTrack
      7m 48s
    9. Offsetting reference points
      5m 49s
  4. 1h 8m
    1. Strategizing shape distribution
      11m 21s
    2. Working with large areas
      2m 44s
    3. Selecting a start frame
      10m 38s
    4. Replacing a shape
      2m 54s
    5. Keyframing: Bifurcation
      4m 38s
    6. Keyframing: Straight ahead
      5m 17s
    7. Keyframing: Extremes
      9m 22s
    8. Keyframing: Maximum digression
      6m 45s
    9. Converting to stereo
      2m 54s
    10. Inspecting your rotos
      4m 43s
    11. Rendering mattes
      4m 45s
    12. Exporting shapes
      2m 54s
  5. 1h 30m
    1. Moving the camera with parallax
      5m 30s
    2. Moving the camera without parallax
      3m 58s
    3. Using multiple splines in a layer
      7m 23s
    4. Subtracting shapes
      7m 6s
    5. Stabilizing the viewer
      5m 46s
    6. Keyframing during tracking
      7m 24s
    7. Unlinking the tracker
      5m 8s
    8. Tracking manually
      12m 35s
    9. Defining corner pinning
      5m 4s
    10. Going further into the Track tab
      6m 53s
    11. Utilizing the more advanced AdjustTrack features
      8m 40s
    12. Working with the Stabilize tab
      6m 11s
    13. Exporting track data
      8m 53s

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mocha 2.6 Essential Training
5h 1m Beginner Sep 30, 2011

Viewers: in countries Watching now:

mocha has always been very popular as a tracking tool, but with the rising interest in stereo 3D conversion, its rotoscoping capabilities have become a favorite player in that pipeline and sales have soared. In this course, Steve Wright covers the basics of operating mocha, as well as advanced tracking and rotoscoping techniques. The course also covers the mocha/Nuke stereo 3D production pipeline in detail.

Topics include:
  • Understanding mocha preferences
  • Drawing and editing splines
  • Creating grids for tracking awkward surfaces
  • Keyframing techniques for advanced rotoscoping
  • Making stereo 3D conversions
  • Stabilizing techniques for advanced tracking
Subjects:
3D + Animation Video Visual Effects
Software:
mocha
Author:
Steve Wright

Rendering mattes

In some production situations, you'll want to render out the black and white matte to disc to be imported into another program. Here we'll see how to do just that. I am using the rendering mattes mocha file from the Project Media Folder. To ensure compatibility with the program you're exporting to, make sure that the Clip Length, Frame Rate, Interlace Mode, Pull-down Mode and Pixel Aspect Ratio match your main project. To render out your mattes, you come up to the File, select Export Render Shapes.

And the first thing is you have these three choices for your rendered mattes. If All Visible is selected, then all of the shapes over here that have their visibility on will be rendered. We'll Close this and I'll select one and now if you go to File > Export Rendered Shapes, the Selected option is on. With this option you'll only render the one matte that's been selected in the layer list. If you select All, then you are going to get all of the mattes which would include your tracker mattes which you frequently don't want.

So normally speaking, you're going to select all visible. Once you've setup your Rendered Matte selection you now have to choose between exporting into an Image sequence or a QuickTime movie. An Image Sequence would give you a series of individual frames and the directory that are maybe tiff or jpeg files. Let's start with that example. So Image Sequence here is selected this is the Directory it's going to write to and by default it's going to write them in the Results directory. If you want to change that you've select the Choose popup, browse for a new location, build a new directory and send it there.

File format here you get to choose the kind of file format you want maybe you want a tiff or jpeg, jpeg might not be a good choice for a Matte because it'll give you compression artifacts. So let's go with tiff. Prefix this is where you'll set the prefix for the filename of each individual frame. So let's call this LanternBoy and a period, don't forget to put in the period. If you don't mocha doesn't, so you would get LanternBoy number without a period between them or if you want an underscore to separate the prefix from the frame numbers.

Suffix if you wanted to put in the suffix that would go here. Index start is what will be the starting frame number of the first frame rendered to disc, normally that will be one. Index width is the padding how many digits will be in the frame numbers. Once you all setup you click OK. You'll see the progress render bar up here which is really pretty quick. We are all done. Now let's take a look at our files. Here we are in the Results folder here is our LanternBoy and we can take a quick look here.

We rendered out a series of sequential tiff numbered one through 27 pattern four places and we'll just step through them right here and there you go that's exactly what we wanted okay we'll Close this and we'll hide Find a Window to take a look at how we might do a QuickTime movie. So we'll to the File popup and select Export Rendered Shapes. This time select QuickTime Movie. Again, if you wanted it to go to a different directory, you would choose that here.

This is also where you would give it the file name of the finished QuickTime movie. So we'll call this movie LanternBoy, you do not put a period. Mocha is going to put the .MOV extension for you. So we'll click Save. So we've given it the filename and the destination. Now when we say OK, we'll get the choice of Compression Settings for the QuickTime move. You have a long list of compression options here. Animation is recommended because all of the others might leave compression artifacts.

If you're enabling keyframes and you need to tell it how often to put the keyframes Millions Of Colors will give you your highest quality revolution and you might want to leave the Quality setting on the Best. All right, we're ready to go. We'll click OK and again progress bar to render the movie. Now let's just take a look at what we got. Open up the Finder File again. So here is our LanternBoy movie, and we'll take a look at that and there we go.

If you don't want to render out all of the frames in the clip, then you can set in and out points in the timeline and Mocha will only render out that frame range. So there you have it, rendering your mattes disc using mocha.

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