I took some videos with my smartphone, and now they play upside down when I play them on any computer but my laptop. I know I can use a video editor like Movie Maker to rotate them and have done it before. But this time is different. When I put the video into the Movie Maker window, it shows it upright. If I save it that way, it still plays upside down. I also tried using an online video rotation service and had problems. I uploaded the video, and it showed it right side up. I then saved and downloaded it to my flash drive, and it was upside down again. Then I uploaded it and turned it to upside down and then downloaded it again, and it still plays upside down.
What am I supposed to to do get it turned the way it's supposed to be?