001 RELATIVE IN
GPI-T +00:00:05.00
001 RELATIVE OUT
GPI-T -00:00:10.00
001 FIXED
GPI-T 00:05:25.00
The Relative IN GPI is sent five seconds after (+00:00:05.00) the IN time of Scene
001 (05:20), so it is sent at 05:25. The Relative Out GPI is sent 10 seconds before (-
00:00:10.00) the OUT time of Scene 001 (05:35), so it is sent at 05:25.
If the IN time for Scene 001 is changed, the Fixed and Relative Out GPIs are not
affected, but the Relative In GPI will move with the scene's IN time. For example,
if Scene 001's IN time is changed to 05:18.00—two seconds earlier than the
original IN time—the Relative In GPI would now be sent at 05:23.00.
If the OUT time for Scene 001 is changed, the Relative Out GPI Event is affected.
For example, if the OUT time is changed to 05:40.00, the Relative Out GPI would
be sent at 05:30.00.
The Fixed GPI Event will always be sent at the time specified—as long as that
time is somewhere between the IN and OUT times for the scene. If it is outside
the times for the Scene or Source Event, it will be ignored.
GPI Precautions
GPI Events should not be sent earlier than the IN time or later than the OUT time
of the scene to which they are related.
GPI Events are usually used to send a trigger command to a titler or character
generator. Typically, the titles can be timed to remain on the screen for just a few
moments or for several seconds. If the title is still playing when Edit Suite pauses
the record deck at the end of the scene, the remainder of the title will not be
recorded.
For example, if you send a GPI Event five seconds before the OUT time for a
scene, but the title that starts playing stays on the screen for 10 seconds, only the
first five seconds of the title will be recorded.
If you have a mixer or switcher and use an A/B Roll between two sources, the
record VCR will not normally be paused until the OUT time for the "B" source is
reached. Because of this, your titles can be started near the OUT time for scene
"A," be recorded over the A/B Roll, and continue while the "B" source is playing.
Note, however, that if you do an A/B/A Roll or an A/B/C Roll, Edit Suite will
pause the recorder after the first transition in order to position the VCRs for the
second transition. In this case, the titles must be finished at about the same time
the first transition completes or they will continue to play while the record VCR
is paused. See Match Frame Edits in the MX1 Events section of this chapter for
more information about when the VCRs will pause.
Ways to Create a GPI Event
There are two ways to create a GPI Event:
