NewTek TriCaster TC1 (2 RU) - Manual (Page 108)

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SECTION 9.2
SWITCHER ROW BANKS
FIGURE 97 (TC1 SHOWN)
In standard Switcher mode, two Switcher rows labeled PGM (Program) and PREV (Preview) are shown
(Figure 97). Clicking a button in the Program or Preview row selects the active video source for that bus
(note that audio sources can optionally be affected by Switcher activity – see Chapter 16 Audio).
TriCaster’s Program and Preview rows represent all available video source in “banks” of buttons. The
number of banks vary according to the number of sources each model supports.
Bank 1 is shown by default. Holding down Alt on the keyboard reveals Bank 2 . On releasing Alt , Bank 1 is re-
displayed. Press ALT + CTRL to momentarily display Bank 3 when supported . It’s possible to ‘latch’ banks ,
either by clicking Bank buttons on the screen, or by pressing Tab to cycle the currently displayed bank.
Hint: The standard Switcher (and M/Es with transitions assigned) show ‘selection hint’ tags beneath their rows
when the selected source is in another bank. Click a tag to jump to the bank the source is hosted in.
SECTION 9.3
PROGRAM/PREVIEW ROWS
The video source selections in the Switcher rows include all external inputs, including video router sources,
internal sources ( Media Players and Buffers ), and the output from all M/Es.
The PGM (Program) row selection determines the dominant video
stream of the Background (BKGD) video layer – that is the ‘rear -
most’ layer of the composition sent to Program output.
Other sources may be mixed above the Background layer at times
as you apply LiveMatte , or as portions of an incoming Preview row
video source appear during a transition.
The Preview row appears in standard Switcher mode. Selections
determine which source is queued up for display in the Background
layer by a subsequent (BKGD) Take or Transition operation.