Grass Valley Karrera Video Production Center v.4.0 - Manual (Page 232)

232 KARRERA — User Manual
Section 7 — Advanced Operations
6. If you are transitioning in a new key, select the source on that key bus.
If you are transitioning out a key, do NOT change the source selected
on the key bus for that keyer (this prevents an unwanted cut).
7. Press Insert After to add this keyframe to the effect.
8. Repeat the steps above for any additional keyer transitions.
9. Rewind and run the effect to check its operation. The transition(s) will
occur as programmed.
To Change the Length of an E-MEM Transition:
Change the keyframe duration of the first keyframe involved in that tran-
sition.
1. Go to the first keyframe for that transition.
2. Press KF Duration and then enter a value in •
format on the keypad.
3. Press Modify KF .
To Prevent Elements from Transitioning in E-MEMs:
To ensure a transition for an element does not occur, simply make sure the
next transition button for that element is off in the keyframe by selecting
another element’s button.
To ensure no transition occurs at all at a keyframe (any changes will be
cuts), you can select only the next transition button for a keyer and make
sure its state does not change in the next keyframe. A change of state in a
keyer is required for a transition to occur when the effect runs.
The transition rules have one subtile limitation. The next transition element
buttons are an interlocked group. All these buttons cannot be turned off
simultaneously (at least one element is always selected). This means you
cannot uses these buttons to prevent any transition from occurring when all
the elements are in use. To workaround this special case, add another key-
frame to the effect to transition the keys with a one field transition (which
is the same as a cut).
Return to Normal Technique:
A useful technique to use when building effects for use on-air is to first
establish a normal switcher state for the particular show. This normal state
could, for example, have only the
Bkgd next transition element selected, a
Mix transition type, all six keyers off, and one second transition durations.
This normal state permits immediate cuts or dissolves to and from any ele-
ment, probably the most common requirements during a live show.