It has been a long time since I made movies with movie studio. Previously, I used mp4 video that I captured on my cell phone. It seemed easy to add media from the mp4 clips and from recorded music, but now my movie studio 14 sends messages that the video clips Im trying to add are unrecognized. I downloaded handbrake to try and fix the problem, but not successful. PS I am an old person with limited skills. Any suggestion would be helpful. What has changed ? ps Im using microsoft surface same type as before and am using MS 10 and resisting to move to 11 and will probably go to Linux.