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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.
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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