Video Editing, Is there a way to make the speed value animated? I added a Speed Control filter onto a clip inside the Video Sequence Editor. When I tried to make the Multiply Speed value of this filter animated, both by making it a key frame and by making it dependent from a driver, I got the error message: Multiply Speed cannot be animated.


Am I doing something wrong?
Why is this value not able to be animated?
Is there a way, for instance an add-on to make it work?


My goal is to  make a movie play at first very fast but then drop the speed continously until it is played in slow motion.
From my experience it is much easier to use speed control disabling Use as speed.



You can then just re-map frames using graph editor (after you've pressed I over the Frame number).
Allows for smooth speed transitions or sharp ones, whatever you like.

This makes it also much easier to pick the exact frame from which the speed will be changing.