I took a 15 minute video with my cell phone - it's now in iCloud. I learned to go to iCloud.com to access the video and now I'm trying to download it to my PC (Windows10). It took about an hour to download but now cannot find a player that recognizes it - I've tried VLC, Windows Media and QuickTime - all say basically that they don't recognize it, may be corrupted, in a file format they cannot read.