Sorry, this is not a "here's how to...!" It's a "how do I do it?" question. I have a Samsung external drive from which I can play and view these small discs that are not compatable with iMac. I need to upload from these discs to a New Project or a New Event in iMovie. I cannot figure a way to upload for editing and produce a finished movie. My iMac forced me to get a Canon HF-R100 camcorder with an SD card for the iMac SD slot.