anna kohlweis Plus 1 year ago i just uploaded a video (it's a private one for now, so i don't want to share it here) and exactly followed the vimeo guidelines for compressing. i have uploaded it with different kbps rates (5000, then 10000) and the same thing happens every time: there are scenes with high contrast and a lot of movement (fire burning up paper) and i get very disturbing horizontal flickering lines in there when watching. the files are perfectly fine on my computer. i have searched the forum for this problem and have found a couple of people who seemed to have the same problem. you asked them if it gets better if they switch to html5 player in safari. i did that and yes, it looks fine that way. i couldn't find out if any of the other people who asked found a solution. once the video is officially online, i surely can't ask every viewer to switch to a different browser (if they're using firefox, like a lot of people do) and switch to a different player? isn't there a solution for this? thanks!