2017

Table Of Contents
By default, a segment on a track is blended with the background, and the matte is turned on by default. In
the Comp quick menu and editor, use the Matte box to also turn the matte off or invert it.
See 2D Compositing on the Timeline (page 381).
Using the GMask Timeline FX
On an RGB clip, using GMask Timeline FX will apply the matte to create a garbage mask that defines which
areas of the image appear in the result clip. With a matte container, the matte clip and the GMask matte
are composited in the result matte.
Use the GMask quick menu to select a shape from a library of presets, or enter the editor to create your own.
See
Masking and Rotoscoping (page 743).
Using Masks in Text Timeline FX
In A Only rendering mode, the text ap-
pears with the RGB clip used as a fill. In
In RGBA rendering mode, only the text
appears on the clip and the image is
In RGB rendering mode, the Text
Timeline FX is overlaid on the clip.
this example, a cloud image was stackedmasked out. In this example, a cloud
on a track underneath, so it appears as
a background.
image was stacked on a track under-
neath, so it appears as a background.
There are three states in which you can manage text in Timeline FX, (two of which allow masking
functionality).
In the Text Timeline FX quick menu, use the Alpha Rendering Mode box to select a state:
RGB: If you are using an RGB clip (or matte container), to generate a clip (or RGB portion of the clip)
with the text overlaid.
RGBA: If you are using an RGBA clip/matte container, to generate a text overlay and use the text outline
as a mask to display it on background tracks.
A Only: To generate a source based on the text as a mask and segment as a fill. For best results, use
unpremultiplied input. In the segment's Comp Timeline FX, verify that the Segment Premultiplication
box is set to Unpremultiplied.
Compositing in 3D Space on the Timeline Using Action
Use Action as a Timeline FX to work in 3D space directly on the timeline. Think of Action as a super tool
on the timeline, unlocking many tools in a 3D environment, allowing you to:
Import Alembic or FBX geometries (as well as other 3D formats).
Create 3D text that you can extrude and manipulate as a geometry.
Add lights and shadows, as well as other lighting effects, such as lens flares and rays.
Look at, and work with your scene, through an Action camera.
Compositing in 3D Space on the Timeline Using Action | 385