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Understanding Video Layers

The concept of video layers is central to understanding how TriCaster’s Switcher and Transition controls work together to supply the video seen on Program Out. TriCaster’s Background layer (often shortened to simply ‘BKGD’) is always the base for the video composition displayed on Program out. In addition to BKGD, three additional ‘primary layers’ can contribute to TriCaster’s final Program output:

  • Two overlay layers, DSK 1 and DSK 2, are composed above the BKGD layer on Program output. DSK 2 appears ‘in front of’ DSK1 – that is, closest to the viewer.
  • FTB (Fade to Black) constitutes a final overlay layer – one that obscures all other layers when applied.


So the order can be represented like so:

BKGD(Program and Preview)--> DSK1--> DSK2--> FTB--> Program Out

With video layers clearly understood, it’s easy to comprehend the Transition and Local Layer controls. (for more information on this topic see the User Guide – Chapter 3)
Hint: DSK is short for Down Stream Keyer. DSK layers are typically used for graphics, titles, etc.

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