Track Stretching Mode
This mode is used for adjusting Interpolation Intervals. When an interval is edited in this mode, every selected keyframe moves to keep its position in relation to the length of the interval. This way you can edit the length of a movement while keeping the timeline’s structure.
To use Track Stretching Mode:
1. Select an interval on the Timeline.
2. Select Track stretching mode from the Edit menu (or press Ctrl + T).
3. The interval you've selected will now be marked with a yellow frame.
4. Hold and drag the last frame of the interval to adjust its length.
Note: Type of interpolation on the adjusted interval will be changed to Fixed
To exit Track Stretching Mode without making adjustments to the selected interval, simply click anywhere in the program window.
Timeline in the Track Stretching Mode
An example of using Track Stretching Mode to change the length of an animation