I wanted to add Cursoreffects on one of my Videos. But id did not work as it was a imported Video of mine. When I recorded a Video with Camtasia it did work. So it would be great, if this could be done with a imported Video as well.
While that would indeed be cool, it is not very likely we will try to implement it. Camtasia records extra information beyond just the screen, such as the cursor location at every moment. This allows us to do the cursor effects, because we know where the cursor is. When you bring in a video that Camtasia didn't create, there is no way to tell if it's even a screen video at all, let alone where the cursor is. Or at least, no straightforward and reliable way.
I'm just trying to set an honest expectation that we probably will not try to implement this.