If you have an iPhone, there is a great way to reverse a clip in Imovie. This is done by selecting the clip and then pressing the Command (Cmd) key. This will take you to the Imovie Options screen. There, you can select whether or not to save the clip as a video or audio file. If you choose to save the clip as a video, then you will need to provide a filename and path for Imovie to find and play your clip. If you choose to save the clip as an audio file, then you will need to provide a filename and path for Imovie to find and play your audio file.