1. Make sure you use the latest version of Freemake Video Converter. Update here http://www.freemake.com/downloads/.
2. Then open Freemake Video Converter, add a video file and play the video. If there’s black screen, try to rotate video.
3. Try to turn off the acceleration. Go to Open Freemake Video Converter > go to File -> Options -> Acceleration and deselect all boxes.
4. Make sure you have all necessary codecs. We recommend free K-Lite Codec Pack.