How to use the antishake option for iMovie I have a .mp4 video clip recorded with a GoPro camera, that I like to stabilize. I want to use iMovie, which I understand should have an antishake function according to this information.

In iMovie I apperently can't chose the antishake function, I can see the icon, but it's grey and can't be selected?

Does anybody know the reason for this and how to fix it? I dont want to buy new software and would prefer to use iMovie.

As an extra info, I use Yosemite and Macbook Pro.
Not sure if anyone is still looking for the answer to this but as far as yosemite is concerned these answers are wrong.  You simply drag the clip or movie into the timeline as normal and click either the entire clip or section that you want and then you click on enhance.  Once you do that you now make sure to click on the video camera icon and the option for Stabilize Shaky Video will show and you can select it