Viewers: in countries Watching now:
VFX Techniques introduces common yet critical visual effects techniques that are used in film and television shows on a regular basis. This installment shows how to build complex composites with Adobe After Effects and mocha, where motion graphics are mapped to live-action footage of an actor. Author Lee Lanier starts by combining rotoscoping and effects to digitally apply makeup to an actor to disguise motion tracking marks. Then discover how to transfer footage into mocha and generate planar tracking data that you can use to motion track graphics to the moving face of the actor. Plus, learn how to build and adjust motion graphics to create the look of a virtual tattoo and a pair of holographic heads-up glasses.
We've imported our image sequence into mocha. Before we begin motion tracking however, I'd like to discuss the interface and go over the basic parts, briefly. I'll start at the top. The main menus are up here, including File for Open and Save. There are some shortcut icons for that also right here. To the right are a number of tools used to create various splines to define a curve which the planar shape will be attached to eventually. We will discuss these in more detail as we go. To the left here is the Layer Controls.
Each shape we draw will be on a different layer and we'll use this once we have those shapes. Now sometimes this gets a little bit crowded with all these menus, so I'm going to close one of these, just so we have more space to work in. Under the View menu, there are various panels which you can open or close. I'm going to go down to Overlay Colors and just click that to close that, to get myself more room. It's important to have more room to work with in the Layer Controls Panel. To the right of this area is the viewer. You have your range right here and also your current frame here, which you can enter by hand.
You have standard play controls here. To the right of that are the Track Tools. These are used for analyzing the motion and the patterns to develop, basically, motion paths and eventually the planar shape. In After Effects, these would be similar to the analyze buttons. To the right of that are various key functions, including Autokey. At the bottom are several tabs and panels. The first one is Clip. It has all the details about the image sequence we're working with.
The next one is Track. This has settings for the motion tracking, which we'll discuss in more detail. This also has a place to export the data back to After Effects. To the right is AdjustTrack tab. This is used to fine-tune that planar shape and eventually determine where the tracked item is going to appear in After Effects. These are all within the Parameters tab. Below that is the CurveEditor, where you can fine-tune your curves you get from motion tracking. When working in mocha, you work with mocha files. Whereas an After Effects file ends with .aep, For mocha, it's .mocha.
So now that we know the basics we can begin to motion track.
There are currently no FAQs about VFX Techniques: Tracking Objects onto a Face.
Access exercise files from a button right under the course name.
Search within course videos and transcripts, and jump right to the results.
Remove icons showing you already watched videos if you want to start over.
Make the video wide, narrow, full-screen, or pop the player out of the page into its own window.
Click on text in the transcript to jump to that spot in the video. As the video plays, the relevant spot in the transcript will be highlighted.