System information
Compositing Video
Compositing is the process of mixing the tracks to create a single layered output.
You can also adjust the opacity of part or all of a clip, and you can superimpose clips on top of one
another for special effects, transitions, or to add different backgrounds.
Compositing and Masks
Compositing is the process of mixing video tracks to create a single layered output.
You can use compositing in conjunction with masks to cover portions of video or to limit the effects of a
filter. Masks are frequently based on dark versus light areas, specific colors, or an .
Click the Parent Composite Mode or Compositing Mode button in the track header and choose a
mode from the menu to determine how the transparency in a video track is generated. Since lower tracks
show through higher tracks, it is the compositing mode of the higher track that determines how much of
the lower track shows though. The compositing mode of the lowest video track adjusts its transparency
against the background.
To change the opacity/transparency of all events on the track, drag the Level slider in the track header or
use a composite-level envelope adjust the opacity/transparency over time. For more information, see "Video
Track Controls" on page 240 and "Video Track Automation" on page 260.
To change the opacity/transparency of a single event, you can use an event envelope. For more
information, see "Event Envelopes" on page 166.
The compositing model in Vegas Pro 6.0 and later differs significantly from the Vegas Pro 4.0 model.
To reproduce the Vegas Pro 4.0 parent/child masking behavior, set the compositing mode of the
parent track to Multiply, and then apply the Mask Generator plug-in as a track effect on the parent
track.
Chapter 16
COMPOSITING VIDEO385