Trim error using variable

Framerate() returns a float, trim need integer. See Round(), Ceil() and Floor()

In your code you probably want :- c=round(c) fc=round(fc) ft=round(ft) But this is closer to the original post:- Code:

To add to what IanB is telling you, note that a line such as round(c) effectively does nothing - the result is calculated and then thrown away. You have to assign the result to something: c = round(c) Also, frames are numbered from 0, so the last frame is framecount-1, not framecount. That's why it's more convenient to use trim(..., 0) to select up to the end of a clip.