Hello. I am trying to use some videos in my Qualtrics survey. I want video autoplay, hiding controller and preventing right-click and F5. But it seems that at the iOS environment, video autoplay does not work. So I just want to check if people have watched the video. I found almost the same question and the kind answer, but it is dealt with youtube iframe api. I prefer html5 video player because I cannot manage some features in the case of youtube video..(e.g. hiding controller and preventing right-click) Can someone please help me out?