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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.
Let's take an overall tour of the user interface for mocha. And this is a watch only demo-- nothing for you load. Just sit back and watch the action. Up here at the top is the Main Toolbar and it contains a collection of several different tools. Over here this is for loading and saving projects, your Undo, Redo. These tools here are for selecting points and splines and like that. These are navigation tools, these are the tools that actually draw splines and over here are a few things for manipulating the splines.
The row right below it here is the Viewer Controls. Here you can select which clip to look at, setting proxy resolutions, looking at RGB values, looking at your Mattes, doing pre-multiply operations, making the splines visible and invisible, and over here at the planar surface and planar grid; we will learn more about those during the tracking. This will stabilize the clip to help you roto it and trace for diagnostics, previews to see your stabilization for the plate, and a little gain, and a gamma control for the viewer to make your clips easier to see for rotoscoping.
Over here is the Layer Controls. Now the layers are where your splines live. So I'm going to put up the splines and there it shows up in the Layer Control. It's called a Layer Control because the splines are stacked on top of each other and here you can rename the splines, your visibility controls, and even color them so you can see groups of things organized by color. And there's a few things at the bottom of the Layer Controls for duplicating splines, throwing them in the trash, locking, and unlocking. Next, we'll take a look at the Layer Properties. Layer Properties assign attributes to the layers or splines and you have things like in and out points and you can insert a moving clip into one of your splines or put a Matte clip in there.
This Link to track, you'll recall that mocha has a Planar Tracker so after doing the tracking we can link splines to the track data here. Edge Properties allow you to set the edge softness. You can also enable and disable the Motion Blur here. Down here are the Overlay Colors so you can actually change the color of the on-screen splines and the control handles and group things by color as we mentioned up here. Down here are the Timeline Controls. Of course, we can drag the playhead, single step forward and backward, so we can set in and out points on the timeline here, because you frequently want to just work on one little section, like so.
So these are the actual playhead controls here where you play forward and backward in single frame and loop control. Over here are the Tracking controls; you only use this when you want to track something. And over here are Keyframe controls, go to the next keyframe, delete a keyframe, and a few special controls we'll learn about later. Down here there are four tabs. The Clip tab sets the attributes to the clip. We have things like Cropping. Over here are a few more tabs where you can set the Colorspace or change your Interlaced settings and so on and so forth. Down below here, some stats about the file.
The Track tab, which is what comes up in default when you start mocha, is used for controlling the planar tracker. This allows you to change some of the attributes to refine the algorithm to improve your tracking results. The Adjust Track tab contains tools for modifying the tracking data. Sometimes your tracker will drift a little bit. This tab is used to correct for that. And the Stabilize tab is used for stabilizing the plate. You might want to stabilize a plate to make it easier to roto or maybe you're going to stabilize a plate and then export the stabilizing data to your particular app.
Now that we have an overview of the user interface we can load a clip and get some hands-on experience.
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