Sony DVS-9000 System User Manual page 626

Note
In constant duration mode (see page 623), the duration of the keyframe before
the deleted keyframe is increased by the duration of the deleted keyframe. Thus
the effect duration does not change.
Deletion position
Deletion of the first
keyframe
Deletion of an
intermediate keyframe
Deletion between two
keyframes
Deletion of the last
keyframe
Delay setting
You can set the delay from the time of executing an operation to run the effect,
and the effect actually starting (that is, the delay until the first keyframe). You
can make this setting in the keyframe control block.
Note that changing the delay does not alter the duration of the effect.
626
Keyframes
Change in effect duration
Keyframe deletion position and the change in effect duration
1 2 3
1 2 3
1 2 3
1 2 3
1 2 3
1 2 3
1 2 3
1 2 3
4
4
4
4