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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.
So far, we've had lots of fun playing with mocha's rotos. But, now it's time to step back and take a look at how to set up a new project. So, to set up a new project, as we saw before, we go to the File pop-up and either select New Project here or use this icon here and we get the New Project window. The first thing we want to do is import our clip. So Choose will open up a browser. Then, as we did before, you can browse to the Exercise Files>the lesson files and then to the Lantern Boy and again, you always select one frame out of the clip and say Open.
The Import Clip window here will show you the full pathname to your frames including the prefix numbering and extension. The next field, Project, shows you the name of your mocha script. By default, it's going to use the prefix of your frames to name the script. If you'd like to change that, you can do so here, and now the script will be called lanternboyXX. If you'd like to change the location, use this button here. By default, it's going to put your mocha scripts in the same folder as your frames in a new folder called Results.
So mocha puts a Results folder inside the same folder you got your clips from and in there, you'll find all your mocha scripts. I'll cancel this. Next up, we have the Options tab. Here's the Frame Range that you saw in your clips. If you'd like to change that, for example, we only want to load in frames 10 to 27, we can edit that data right here. I'll put that back to 1. Down here are the Frame Properties; contains things like the Frame Rate. You can choose from this popup a different frame rate if you wish, and the pixel aspect ratio.
Now, mocha looks at the image you load in and decides which kind of image it is. For example, it thinks it's an NTSC image and then it will put up the proper aspect ratio for you here. The Lantern Boy clip is a custom clip, and it has an aspect ratio of 1. Next is the Fields and the Pulldowns. These are used for any interlaced video. We'll be taking a closer look at that in the very next video. The Advanced Tab contains additional controls. The Frame offset here is not really a frame offset, this is the starting frame of your Timeline.
So if you loaded in a clip numbered 101 to 200 and didn't change this, on the Timeline, you would see 1 to 100. So you would have to come here and enter 101, so that the Timeline would start with the same frame number as your clip. We'll put that back to 1. Caching; by default you are going to leave Caching off. The only time you turn it on is if you have a slow network, and a fast local drive. Then, it'll bring them over from the slow network, put them on your fast local drive, and it'll speed up your workflow.
The Color parameters here we'll take a look at in a video shortly. Now, we'll take a look at how to save and load scripts. So I say, OK, I bring in my clip. It's now named lantern boyXX, because I changed the name. If I'd like to save it with another version number for example, we can do File>Save As, and give it another version number _v02, Save. Now my script has a new name here.
To load an existing file, you have a couple of approaches. You can do the File pop-up, and look for it here in the Recent Files; mocha remembers the last 10 projects you work on, so you can just pick it right out of this list. Just to make sure you don't lose any work, you can click Save one more time before you load in the new mocha project. If the project you are looking for is not in the Recent Files List, then you can do Open Project, and browse to it wherever it lives. We'll cancel that.
Now, in the New Projects Tab, you did several settings. If you find later you'd like to modify those, you can come down here to the Clip Tab, and here you can see the settings for the Pixel Aspect Ratio and the Frame Rate, the Colorspace and the Interlace. So if you decide, for example, that the Frame Rate is wrong, you can change that right here, or if you forgot to set your Frame Offset, you could set that right here.
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