how to smooth zoom in on a movie clip using transform scale in video sequence editor? I've created a transform in the video sequence editor that applies a uniform scale to a strip.

The zoom in happens as soon as the transform frame is reached and then the zoom out happens just as abruptly at the end of the transform.  I would like zoom to be progressive.

How can I do this with blender?
Have you tried to do linear interpolation in the graph editor?
Press A to select all, then V> Vector.

Optionally, after the previous steps: Shift+E> Linear extrapolation.