NewTek TriCaster 8000 - Manual (Page 419)

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ALT + OUT
A different operation results when you hold down ALT (see Section 22.6.7) at the
same time as you push OUT. This operation updates the Out Point of the active clip in
the currently delegated DDR to the frame currently displayed.
SHIFT + OUT
Hold down SHIFT at the same time as you push OUT to automatically trim the play
start setting of the newly added clip to a frame five seconds prior to the Out Point
(this is a non-destructive trimming operation. The duration of the file on disk is not
modified.)
This feature is supported on TW-42 as well.
Hint: This is a non-destructive edit of the playlist clip, equivalent to dragging the trim
handle at right-hand end of the DDR scrub bar.
O
NE
B
UTTON
M
ARKING
Another handy method of creating clips for instant replay is referred to as ‘one
button marking’. With Record enabled, watch for notable events, and simply press
OUT whenever one occurs (no need to press IN beforehand in this case). This
creates a new clip with an Out Point at the current frame, automatically setting the
In Point to the first frame of the current clip (i.e., the last time you pressed OUT).
22.6.7 ALT AND QUALIFIERS
FIGURE 368
For ergonomic reasons, ALT is in a special location by itself just below the Play
Speed control group. It, along with SHIFT and CTRL (Control) are what are termed
‘qualifiers buttons’, in that (like their keyboard equivalents) they qualify, or modify
the outcome of operating some other control.