I have just converted a video to my mac on quicktime player. I want to use imovie to edit the movie. How do I move it from quicktime player to imovie

I have just converted a video to my mac using Elgato video capture. The result is great. However , the only choice to place the file is in QuickTimePlayer. I want to file it in imovie so that I can edit the movie. Does anyone know how to move the file from Quicktime to imovie. There doesnt appear to be an option in the drop down menues.