I have set a background video in Swift Slider and each time the page is scrolled and the video / row goes out of view and then back into view the video restarts from the beginning. Whether the video is set to single play or loop makes no difference. Tested on Mac, Safari, Chrome, Firefox all latest versions. There is only one slide per category / page and in the swift slider page attributes autoplay and loop are off and the number of slides is set to 1.