Great but why?

Why cant I speed up my videos? At first I thought I couldnt use it because I hadnt updated it but it wasnt that. I deleted it and still I cant Speed up the video. Then I thought maybe it was my phone generation, but my friend was the same phone BE and it works. The problem is not that it wont speed up its that I doesnt give me the option like it only goes up to 1x and not 2x.

Boo! New update about iMovie, v2.2.3