Sony HDS-7100 User Manual page 194

Relation between insertion position and changes in
effect duration
When the edit point is intermediate between two keyframes as
shown below, inserting a keyframe does not change the timing of
any other keyframes, and the total effect duration remains the
same.
1
Before insertion
1
After insertion
On the other hand, when the edit point is at the position of an
existing keyframe as shown below, inserting a keyframe either
before or after the existing keyframe changes the total effect
duration.
1
Before insertion
1
After insertion
If, however, the CNST DUR button is lit when you carry out the
insertion, the effect duration again does not change, and the
inserted keyframe has a duration of zero.
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Chapter 7 Keyframe Effects
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