Problem with splitting a clip

I have read a number of tutorials on the internet about how to do this but Edit/split clip stays grayed out. I move the yellow border to where I want the clip to split, but then how to I get it to split? The option stays grayed-out.

I am totally frustrated with this difficult-to-use software!

Thanks for any help.

I'm going to guess that you're on a Mac, and that you're using iMovie. Always remember that we cannot see your setup, so giving us lots of details will only help matters and get you better answers, faster.

If I'm correct about your situation, I suspect the problem is that you're trying to split a clip in an event rather than in a project. iMovie uses events to store the actual footage, but to work on the files you need to create a project.

If you are working in a project, it's not the yellow selection border that you need to move; it's the playhead. Move the playhead (thin red line) to the point where you want to split and right-click, then choose the split from there.

That's exactly what I was doing wrong, chas. I may also have had to switch to advance settings, too, though that might have related to something else I was doing wrong!

Great, glad I could help.