importing MPEG 4 footage into imovie
Hi I had some professional video done and want to edit it in imovie. When I import it I just see black strips in the media. it imports as normal, plays as normal but no pic or sound. Do I need to import some codec so I can see the video? What else might be wrong. I have version 10.1.1 of imovie and the latest update on the operating system on my mac, OS X Yosemite 10.10.5
iMovie 10, OS X Yosemite (10.10.5)