I just installed the plugin twixtor pro 5, and I'm having some problems... (I have FCP 6.0.6)
When I change the speed in the filter tab, in the twixtor plugin itself, the size of the clip in the timeline doesn't change.
I.e: If I change the speed to 50%, the clip in the timeline does not double in size, it stays the same and I cannot drag the clip out to make it longer.
Similarly when I change the speed to 200% the clip does not shrink in size, half the clip is just black.
Does anyone know of this problem? Otherwise the effect looks great when rendered, but due to this problem, I can't use it.
You should read the manual, but in FCP it's tricky. For slowing down, you have to nest the clips in a new sequence to make up for the gain in duration as plug ins aren't allowed to change the duration of the clip in FCP.