This video software is badly flawed. When working from very large (over 10 GB) AVI files, it creates a final mp4 that includes an occasional frame that is reversed and off-center. The result at playback is a flashing "blip" that interferes with the enjoyment of the video. When I brought this to the attention of the company, they put me through an endless series of tests as though I was their personal beta-tester. Soon, they started to repeat requests that they had made previously. I finally had enough and I repeatedly demanded a refund, but they refused. They just kept demanding that I do more tests. Stay away from this company at all costs unless you don't mind throwing away your money!