System information

For examples of how parent/child track relationships affect 3D compositing, see "3D Compositing" on page
391.
Learning more about compositing modes and transparency
The Compositing Mode button determines how the transparency in a video track is generated. Because
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.
The mode can be selected by clicking the Compositing Mode button and choosing a mode from the menu.
The following examples demonstrate how each of the compositing modes would affect two simple tracks.
Track one is a generated media event with a transparent edge, and track two is a DV clip.
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